Type BC-6A Dual Channel Consolette · RCA Bldg., 1560 N. Vine St. Hollywood 9-2154 Branch-San...
Transcript of Type BC-6A Dual Channel Consolette · RCA Bldg., 1560 N. Vine St. Hollywood 9-2154 Branch-San...
BROADCAST AUDIO EQUIPMENT
RADIO CORPORATIOn OF AMERICAErIGIIIEERMG PRODUCTS Division CAMDER II. J.
Type BC-6ADual Channel Consolette
1B-24788
EQUIPMENT LOST OR DAMAGED IN TRANSITWhen delivering the equipment to you, the truck driver or carrier's agent will present a receipt for your signature.Do not sign it until you have (a) inspected the containers for visible signs of damage and (b) counted the containers andcompared with the amount shown on the shipping papers. If a shortage or if evidence of damage is noted, insist thatnotation to that effect be made on the shipping papers before you sign them.Further, after receiving the equipment, unpack it and inspect thoroughly for concealed damage. This should be done within15 days, if possible. If concealed damage is discovered immediately notify the carrier, confirmed in writing and insist upon aninspection and report.In addition to the above, the shortages or damages should also be reported to RCA, but do not return any damaged equipmentunless we have furnished complete return shipping instructions.Transportation companies are required to adjust for damage resulting from their negligence and RCA will assist you, ifnecessary, in obtaining settlement. Accordingly, you should save all shipping papers, letters or invoices concerning theshipment until it is certain that the equipment was delivered in good condition or until any damage has been adjusted.
REPLACEMENT PARTSWhen ordering replacement parts, please give symbol, description, and stock number of each item ordered.The part which will be supplied against an order for a replacement item may not be an exact duplicate of the original part.However, it will be a satisfactory replacement differing only in minor mechanical or electrical characteristics. Such differenceswill in no way impair the operation of the equipment.The following tabulations list service parts and electron tube ordering instructions according to your geographical location.
SERVICE PARTS
LOCATION ORDER SERVICE PARTS FROM:
Continental United States, Alaska and Hawaii Service Parts Order Service, Bldg. 60, 19th & Federal Sts., Camden 5,New Jersey or through your nearest RCA Regional Office. Emergencyorders may be telephoned, telegraphed, or teletyped to RCA EmergencyService, Bldg. 60, Camden, N. J. (Telephone: WO 3.8000).
Dominion of Canada RCA Victor Company Limited, 1001 Lenoir Street, Montreal, Quebecor through your local Sales Representative or his office.
Outside of Continental United States, Alaska,Hawaii and the Dominion of Canada
RCA International Division, Clark, N.J., U.S.A. or through yourlocal Sales Representative.
ELECTRON TUBES
LOCATION ORDER ELECTRON TUBES FROM:
Continental United States, Alaska and Hawaii Local Tube Distributor
Dominion of Canada RCA Victor Company Limited, 1001 Lenoir Street, Montreal, Que-bec or through your local Sales Representative or his office.
Outside of Continental United States, Alaska,Hawaii and the Dominion of Canada
Local Tube Distributor or from:Tube DepartmentRCA International Division30 Rockefeller PlazaNew York 20, New York, U.S.A.
If for any reason, it is desired to return tubes, please return them to the place of purchase.PLEASE DO NOT RETURN TUBES DIRECTLY TO RCA WITHOUT AUTHORIZATION AND SHIPPINGINSTRUCTIONS.It is important that complete information regarding each tube (including type, serial number, hours of service and reason for itsreturn) be given.When tubes are returned, they should be shipped to the address specified on the Return Authorization form. A copy of theReturn Authorization and also a Service Report for each tube should be packed with the tubes.
LIST OF RCA REGIONAL OFFICESBoston 16, Mass. Chicago 54, Ill.
Room 2301, John Hancock Bldg. 1186 Merchandise Mart Plaza200 Berkley St. Delaware 7-0700
Hubbard 2-1700Hollywood 28, Calif.
RCA Bldg., 1560 N. Vine St.Hollywood 9-2154
Branch-San Francisco 2, Calif.420 Taylor St.Ordway 3-3027
Atlanta 3, Georgia522 Forsyth Bldg.
Lamar 7703
Dallas 1, Texas1907-11 McKinney Ave.
Riverside 1371
Kansas City 6, Missouri340 Dierks Bldg.
Harrison 6480
Cleveland 15, Ohio1600 Keith Bldg.Cherry 1.3450
New York 20, New York36 W. 49th St.Judson 6-3800
BROADCAST AUDIO EQUIPMENT
INSTRUCTIONS
Type BC -6A
Dual Channel ConsoletteMI -I 1638
RADIO CORPORATION OF AMERICAENGINEERING PRODUCTS DIVISION, CAMDEN, N. J.PRINTED IN U.S.A.
5106 - 537
Figure 1-Type BC -6A Consolette M1-11638
1
TECHNICAL DATA
Power Required
100-130 volts, 50/60 cycles300 watts
Amplifiers
9 RCA Preamplifiers 5AR1 thru 5AR93 RCA Preamplifiers 5AR10 thru 5A12122 RCA Program Amplifiers 5AR13, 5AR142 RCA Monitor Amplifiers SARIS, 5AR162 RCA Power Supplies 5PS1, 5PS2
Inputs
10 Microphones2 Tape, Turntable
or Film5 Remote Lines1 Network3 Cue Lines
30/150 ohms
150 ohms600 ohms600 ohms
20,000 ohms
Output Lines2 Program Lines 600 ohms2 External Monitors 600 ohms5 Speakers 15 ohms5 Remote Lines (Cue) 600 ohms
VU Meter
18 dbm12 dbm6 watts (total)
18 dbm
Two 4 -inch illuminated VU Meters with Type B scale
Channels
CH 1 Two independent program output channelsCH 2 or single output channel with split mixing
Frequency ResponseProgram: = 1.5 db 30 to 15,000 cpsMonitor: =2.5 db 30 to 15,000 cps
DistortionProgram Line: Less than 0.5%
(100-15,000 cps at 18 dbm output)Monitor: Less than 1.5%
(50-15,000 cps at 6w)
Signal to Noise RatioMicrophone to Program Line(68 db gain, 18 dbm output) 68 db
Tube Complement (MI -11484 Kit Required,not supplied)
2 5R4GY4 14AU72
4 12AX74 6V6GT
10 MI -11299 (RCA selected 12AY7)12 12AY7
Dimensions and WeightWidth - 38 inchesHeight -111/2 inchesDepth - 211/2 inchesWeight- 127 pounds
Finish
Two-tone umber gray
DESCRIPTION
The Type BC -6A Dual Channel Audio Consoletteis designed to provide audio amplification, switchingcontrol and monitoring facilities essential to largeradio and TV stations. The equipment is completelyself contained. The use of etched wiring circuits forall amplifiers has allowed space for the two powersupplies and additional features. The BC -6A incor-porates nine mixer positions and provides all thefacilities needed to accommodate one or two studios,an announce booth microphone, a control roommicrophone, two transcription turntables, tape, film,five remote lines, network, and three cue circuits. -
Colored knobs on switches and controls arematched to indicate related functions. A metal bracketis mounted in the center between the VU meters tosupport the program script. A selector switch indi-cates single channel or dual channel operation:one Master gain control is used for simultaneous con-
trol of both channels and two Sub -Master controlsfor individual control of each output channel. Atotal of twenty-two inputs are available. Two VUmeters, one for each channel, are mounted on thecontrol panel.
The styling of the BC -6A matches the other RCAaudio consolettes, BC -2B, BC -3B and BC -5A, as wellas the Auxiliary Mixer BCM-1A and SwitchingConsolette BCS-11A. The styling is also suitable foralignment with TV Terminal equipment. The con-solette should be mounted on a fiat topped desk orsurface of adequate dimensions. Electrical connectionsare made to power and audio terminal blocks at theback of the consolette. Knockout holes of 1-1/16inch diameter are provided in the rear panel and onthe rear bottom of the consolette housing for theterminating conduits. The front panel is hinged atthe bottom to the consolette housing and may be
2
tilted forward for servicing the inside. Two supportshold the panel in position when open so as not toallow the weight of the panel to rest on the controls.The louvred top cover may be easily removed. Thetubes are supplied separately as tube kit MI -11484and are listed in the Technical Data.
Associated Equipment
The necessary auxiliary units such as microphones,loudspeakers, turntables, tape recorders and warninglights, may be selected from the RCA catalogs. Aseparate sheet of instructions is packed with eachunit.
In regard to loudspeakers, however, a few pointsshould be emphasized. A maximum of five speakersmay be connected to each BC -6A consolette. Theloudspeaker should have a voice coil impedance of15 ohms, or an impedance matching transformerMI -11731 must be provided.
As to warning lights, the MI -11706 series are recom-mended for the studios, control room and announcebooth. The lights which are available with inscrip-tion, are listed as follows:
ON AIR MI -11706-1REHEARSAL MI -11706-2AUDITION MI -11706-3STAND-BY MI -11706-4SILENCE MI -11706-5
An MI -11702-A Warning Light Relay is requiredfor each warning light.
Circuit DescriptionThe BC -6A Consolette amplifiers are constructed
on individual etched circuit boards. External con-nections are made through turret type terminals oneach board. The boards are secured with standardhardware to a metal chassis and are easily loosened orremoved to gain access to the etched wiring.
Preamplifiers 5AR1 -5AR7Twelve preamplifiers are used in the consolette,
two units, however, are used as line amplifiers andthree units as booster amplifiers.
The preamplifier is a two -staged RC coupledamplifier using a selected 12AY7 (MI -11299) twintriode. The input signal for the microphone pre-amplifier is derived from an unloaded input trans-former which is mounted under the preamplifiermounting shelf. Negative feedback is applied fromthe plate of the second stage to the cathode of theinput stage. The output of the second stage is fed tothe potentiometer type gain control (mixer, sub -master or monitor gain control). The output signalfrom the gain control is applied to the grid of thethird stage and then to a cathode follower outputstage. A 12AY7 tube is used for the third and fourthstages. To reduce the static charge. on the outputcoupling capacitor 105, which could cause switchingclicks, the cathode resistance 1R10 is returned to anegative supply and grid bias is obtained through avoltage divider 1R12 and 1R13 such that the cathode
air 2 0GAIN Stir*.
INPUT 3
IC 20/
IV/A
c 4a
3
Nn0
/2/1Y7
/C/
.047
/C3
.047
km
IV 2,4
Boa N
q,9 ot
12AY7I V2&
IC4
.0- 4- 7
co `.9
CC
a03Fr
IC
owe -0-oh-n7
/.0
OUTPUT5
CC 4g 285s/.010
-190y.
94 5
/ R/601<-5,W-
476069 -0
o
o 7e275 V06
0 Ia 3V09
Figure 2-Schematic Diagram for Preamplifier f5AR1 -5AIM
3
1311
GROUNDSTRAPR4
C3
GROUNDSTRAPI C5
II X10 9 8 716
Figure 3 Preamplifier 15A111Printed Circuit Board
of the output stage is approximately at groundpotential.
Preamplifiers SARS. 5AR9 as Line AmplifiersThe full gain of the amplifier is not required for
the network and remote line preamplifiers 5AR8 and5AR9, therefore, the input tube 1V1 is omitted andinput connection is made to the grid of the thirdstage. However, all the components are available forspecial applications requiring more gain. The fullgain of the preamplifiers 5AR8 and 5AR9 may berestored by the following changes:
1. Remove resistors 5R9 and 5R10 which are con-nected between terminals 7 and 9 of 5T8 and5T9 respectively.
2. Remove wire #597 from terminal 9 of 5T8and connect it to terminal 1 of 5AR8.
3. Connect terminal 9 of 5T8 to terminal 3 of5AR8.
4. Remove wire #598 from terminal 9 of 5T9and connect it to terminal 1 of 5AR9.
5. Connect terminal 9 of 5T9 to terminal 3 of5AR9.
I Ri
GROUNDSTRAP
GROUNDSTRAP
I XV2
Figure 4-Preamplifier (5ARIO, 5AR11, 5AR121Printed Circuit Board
6. Insert MI -11299 selected 12AY7 tubes in thesocket nearest the front of the preamplifiers5AR8 and 5AR9.
Preamplifiers 5AR1O, 5AR11 and 5AR12 asBooster Amplifiers
When the preamplifiers are used as booster ampli-fiers, they vary from the preamplifiers SARI through5AR9 as shown in figures 2 and 3. The cathoderesistors 1R14 and IRIS are connected to ground.Self bias is obtained through the voltage drop across1R15. Since no switching is performed following theamplifier, the buildup of a charge on the outputcoupling capacitor 105 is permissible. The CH 1Booster Amplifier 5AR11 and CH 2 Booster Amplifier5ARIO are controlled by CH 1 SUB -MASTER andCH 2 SUB -MASTER controls respectively. The PGM-.TB-MON Booster Amplifier 5AR12 is controlled bythe PGM MON Gain Control 5AT12.
The preamplifiers, less input transformers, have avoltagt gain of 46 db. An input signal of -50 dbmto the input transformer will produce an outputvoltage of approximately 1 volt.
4
2OUT 0IN
GAIN CONTR. 1C21( 0.1
1/212AY7 y2 12AY7IVI A
1
IVI 8 6
ICIit 7
.047
C 4 0
IR1 1R2 1R3 1R48200 100K I MEG 5601W-570 IC3
.042
212AY71V2A
1R639K
1R756001W - 570
/212AY71V2B 6
204 7 -.047
1R91MEG
1R151200
1051.0
1138, 1R141200/1K 56K
5,0/
OUTPUT5
1R11100K
08
275V
1
160K -5".
9
07C
06
265v010
63V011
476967
09
Figure 5-Schematic Diagram for Preamplifiers 5ARIO, SARI! and 5AR12
1
NPOT
2RI/00K
124X72 C /.047
2V 1 A
3
2R2180057
2 R46.80K
2R3/.50K
2C3.047
2Y 18 G
7
8
2 R52700
2R8470K
2R7120K
02C4
.047
7
2R9470K
2Ra/20 K5%
2V2I2AU7
7
2 V3G I2AU 7
OUT06
OUT
2C235
menF.
2C5r 20 2C6.047 r"2R10390
03
2R/i/0K 285V
2R/2/8 I< -5%
753060-0
C
07FB08
Figure 6-Schematic Diagram for Program Amplifiers 5AR13, 5AR14
2
9 6 7 6 5 4 3
2C1
2XV12C2
5
LINE AMP, 5AR14. The etched wiring board con -2 R I tains all the electrical components except the output
transformers 5T10 and 5T11 which are mounted onthe chassis directly in the front of each programamplifier 5AR14 and 5AR13 respectively. A 12AX7
2R6twin triode is used for the input and phase inverterstages, driving two 12AU7 twin triodes which are
2R5 connected in push-pull parallel. Negative feedback2R4 is derived from a tertiary winding on the output2R9 transformer. An input voltage of approximately 1.35
volts is required to obtain an output of 30 dbm.
Figure 7-Program Amplifier 5ARI3, 5AR14
Program Amplifiers 5AR13 - SAR14The program or line amplifiers in the BC -6A are
identified as CH 1 LINE AMP, 5AR13 and CH 2
Monitor Amplifiers SARIS - SARI6The monitor amplifiers in the BC -6A are identified
as CUE FEED MON (5AR15) and PGM TB MON(5AR16) respectively. The circuit and constructionof the monitor amplifier are similar to the programamplifiers. The transformers 5T13 and 5T12 aremounted directly in front of the monitor amplifierprinted circuit boards. To obtain rated output levelof 6 watts, a pair of 6V6-GT tubes are used in apush-pull output stage. Approximately 1.32 voltsinput are required to obtain 1 watt output. Thetransformer secondary has taps for 600/150/16/8/4ohm loading.
Power Supplies 5PS1 -5PS2The BC -6A has two power supplies, each powers a
single channel and alternate pre -amplifiers to providegreater continuity of service. The 5PS1 supplies power
3R1
10 tat'N PUT
3
3V1 A 31/1 B12 AX7
4119It H2
3R2.2200
3C1.047
3 R 41 .0MEC
3R32201( - 3c2
82 MMF
3R739K
3R51500
3R6 3C539K T82MMF
3C3.047
3R8470K
3R9470K
3C4.047
2
2
3V26V6
3R104302W
74-10H 2
7
4
3R11430
2W
3V36V6
3C625
09OUT
1114-C) 86.3V
H2.4.--0 7
OUT
3C720 3 R12
680 0
0 5
04C
285V0 6
3R I3 FEED BACK22K
0-753097-I
3
Figure 8-Schematic Diagram for Monitor Amplifier 5AR15, 5ARI6
6
3R8 3XV2 3RI2 3R4
3XV3 3R9 3R10 3R11 3C4 3C5
3C3 3C6 3XVI
3R6 3R5 3C7
3R7
3R13
Figure 9-Monitor Amplifier SARIS, 5AR16 Printed Circuit Board
to odd numbered amplifiers and CH 1 VU meterlights; the 5PS2 supplies power to even numberedamplifiers and CH 2 VU meter lights.
The power supply is designed for operation from100-130 V 50/60 cycle power line. Transformerprimary taps are available for nominal line voltage of105, 115 and 125 volts. The plate supply voltages are
3R2
3R3
obtained from a 5R4GY full -wave rectifier tube andfiltered by several stages of RC networks which pro-vide both isolation and sufficiently low ripple for thevarious amplifier stages. A negative supply voltage isobtained from a 6X4 tube connected as a half -waverectifier. The 6.3 v heater winding connects througha hum adjustment potentiometer to a positive bias
411 4C1 902 4C5 4C4 4C6
5R4-GY 6 X4 4C9 4CRI TERMINAL BOARD 4T81 4R9 4C6 4C6II5V AC HUM ADJ.
Figure 10-Power Supply SPSI, 5PS2
O47
61
3 0 0 '0 1-1 a 3 0 0 0 m
a tn no tn 11
4
471 1
1
5 0 7
5V -
2A
365V
a sv 9 10
b60 ,;j
3 t2 0 6.3 0 13 14
a
4VI
5R4
GY
4R3
120K
1W 4C31
4R4
18K
0.22
1'
4RIA
4RIB
100
3000
VW
-4-V
VV
-44R
275
0
0275
V a
q
4C1
AIB
c - -
40 4
0 40
4R5A
4R55
4R5C
4R5D
600
600
600
A6
40 4
01 4
0
600
4R12
4R13
5600
12K
IW
0300
v 82
1 48
6 39
0002
90V
83
JVV
--02
65V
64
265V
55
4R14
4
5600
I W
12K
C2
A11
31.0
4C4
4C5
A8
C.C
a40
---4
CT
10
1
3
4V2
6X4
400
4C7
1010
4R16
114R
7A4R
7B
2W15
0010
K
.7=
., 4C
880
4R8
120K
40 T
hIT
) 47
7
-029
0V 6
602
65V
07
0290
V It
AS
S C
j 4C
640
.40
40
4R9
500
HU
M A
DJU
ST
1524
V0
NE
W
1626
VD
AG
ED
ALL
RE
SIS
TO
R V
ALU
EA
LL C
AP
AC
ITO
R V
ALU
UN
LES
S O
TH
ER
WIS
E4R
I6, 6
8011
WH
EN
127
008
WH
EN
OH
MS
&M
ICR
O-M
RA
D5
PIE
D.
LED
IN M
I -11
6373
M1-
1163
8LE
D IN
mi-I
1641
.
QC
O 1
90V
89
OH
1
6.3V
5.4
A OH
2
6360
96-2
CR
WIR
E T
AB
LEP
AR
TS
LIS
T 6
9052
57 5
01
IfVF
AE
,11
:41,
:.34R
0 ...
,IT
EM
NO
OP
EN
NE
TS
1- lI
TIN
NE
D C
OP
PE
R 0
32D
IA.
805-
5750
20 -
22
WH
ITE
- R
ED
7/01
2680
5 -/
51
30 -
31R
EO
/YE
L.7/
0 1
2680
5'7
5240
.R
EC
YB
LK. 7
/012
680
5-7
5350
7/01
080
5-6
5460
-b2
BLA
CK
55
.80
YE
LLO
W57
90B
RO
WN
5810
0B
R N
/BLK
.59
titt
OR
AN
GE
60
120,
-114
RE
D/B
LUE
6113
0133
RE
D/ C
AN
.62
148
RE
D/T
EL.
6315
0-15
1W
HIT
E -
TE
L/G
RN
.7/0
1080
5-6
6416
0S
LEE
VIN
G,E
ILK
.66
I -D
.8
a517
0.11
82S
LEE
VIN
G B
LK.
42 ID
-8
4619
0S
US
vi N
G-1
33 I.
D.
644
23 4
C2-
6
140
4R5
4T1
- 90
-4 R
r3
-100
-4R
9-1
30-4
XV
1-2
124
4R11
-.40
-478
1'1
1-4R
5-1,
62-4
71-8
20 4
XV
18
NO
TE
S I- T
HE
FO
LLO
WIN
G W
IRE
S A
RE
TW
IST
ED
PA
IRS
.12
0812
130
8 20
1228
130
9081
002-
SO
LDE
R A
LL E
LEC
TR
ICA
L C
ON
NE
CT
ION
SU
SIN
G IT
EM
67
3- 4
R16
15
PA
RT
OF
FIN
AL
AS
SE
MB
LY
4XV
I
.-12
1-47
1-9
122
4XV
2-3-
120-
411-
713
04
XV
2-4
121
4XV
I -
..30
-47
1-6
SO
4CR
I 2,-
20 4
T1,
5
150-
4CR
I-3
624C
1-4
-21-
.- 4
R1-
3
120
4xV
1-4
132-
4121
.2-
4784
4T B
3
v-15
1-48
7-3
-401
0148
1 2
60-4
T4C
1-6
31-4
R2-
1-'"
124-
4CI-
7
40 4
T1
110
04T
412
31-4
01-5
90
.-15
1-47
84
172
-01'
+48
7
e
173
2
21.4
XV
1 B
4XV
222
-4C
RI-
4--4
._.1
30-4
71-1
1
---1
22-4
T1-
10 50 4
013
2
'444
711
`61-
4CR
/-1
co
S
4R7
4C9
9
voltage to minimize hum due to heater to cathodeleakage. A full wave bridge type selenium rectifiersupplies d.c. power to the speaker relays. A tap isprovided on the transformer winding to compensatefor ageing of the rectifier.
Fixed Pads
Etched wiring techniques are employed in the con-struction of certain fixed attenuators. The same basicboard accommodates various circuit configuration andresistance values. The line input pads 5AT15 and5AT16 are balanced, center -tapped H type having aloss of 30 db. The external monitor pads 5AT17 and5AT18 are of the balanced L type having a loss of30 db.
Relays
Three relays are supplied mounted in the rear ofthe consolette. These are adequate for many stationlayouts; however, if two studios, with a control roomand an Announce Booth make up the station, anadditional relay must be installed. Space has beenleft for the mounting of an additional relay (5K4)beside 5K3. This fourth relay has been included inthe diagrams and photographs. Refer to the figures22 and 23. Order this relay as MI -11748 SpeakerRelay Kit.
Script HolderAs shown in figure 1, an aluminum bracket is
mounted on the BC -6A Control Panel just under the
loudspeaker toggle switches. This bracket is designedto hold the clip board which is used in broadcaststations to hold the standard 81/2" x 11" script sheets.
Overall SystemAs shown in the block diagram, figure 22, there are
five mixing channels for low level microphone inputsand two low level inputs for either turntable, tapeor film sources. Two high level mixing channels havebeen provided for the network and remote line inputchannels.
The inputs to the nine mixer channels are selectedby means of the input switches 5S1 to 5S8. The gainof each of the high level mixing channels is controlledby the mixer attenuators 5AT1 to 5AT9. The outputof each mixing channel may be connected to eitherthe channel 1 or channel 2 mixer busses. The signalis then amplified by the CH 1 and CH 2 BoosterAmplifiers. The gain of these amplifiers is controlledby the CH 1 and CH 2 sub -master gain controls.With the single -dual channel switch 5S22 in the dualposition, the output of each booster amplifier is fedthrough a section of the ganged Master gain controlto the respective line amplifier. With the switch in thesingle position, the output of the two booster ampli-fiers are combined and then fed to both line ampli-fiers. The LINE 1 switch 5S23 and LINE 2 switch5S24 permit connection of either or both lines toeither channel. Two VU meters, one for each channel,indicate program output level. Bridging pads are pro-vided for connection of external monitor amplifiers to
812 31
Figure 13-Type BC -6A Consolette with Panel Open
10
both program channels. Two monitor amplifiers areprovided. One for program monitoring and talk -back,which connects to the speaker terminals throughmuting relays. The input to this amplifier is selectedby means of a push-button switch 5518 from controlroom microphone for talk -back, from the output ofchannel 1 or channel 2 line amplifiers for monitoringand from three cue line inputs.
A cue feed monitor amplifier is provided for feed-ing cue or background sound to the studios orcontrol room speakers without going through thespeaker muting relays. The position of the switches5525, 5S26, 5S27 and 5S28 determines whether thespeakers are fed from the Program-Talkback Monitoramplifier or the Cue Feed Monitor amplifier. Theinput to the Cue Feed Monitor amplifier is selected bya rotary switch 5S19 from REC CUE, REC 1, REC 2,NET, and REMOTE input channels and the CH Iand CH 2 outputs.
The speaker muting relays are actuated by themicrophone input selector switches and the associated
mixer output switches, and the talk -back switches toprevent acoustic feedback from speaker to micro-phone and to prevent talkback to a studio which isOn Air. The same switches and the line outputswitches also control the signal light circuits for thecontrol room, studios and announce booth. Thereare provisions for adapting the interlock circuits tovarious types of installation.
With the switch 5S21 in the OVERRIDE position,the remote lines are connected to the input of theprogram -monitor amplifier such that a call receivedover any of the remote lines will be heard over themonitor speakers. With the switch 5521 in thePHONE position, the remote lines or output channelsmay be monitored by means of headphones plugged -in to the MON-PHONE jack 5J2. The line to bemonitored is selected by means of the REMOTE -CUE -PHONE switch 5S20. With the switch 5521 inthe remote position, the output of the program -talk -back monitor is fed to the remote line selected bythe switch 5S20.
INSTALLATION
Location of ConsoletteThe BC -6A Consolette may be installed on any flat
top desk or table of suitable size. A minimum of 1/2inch clearance should be allowed between the rear ofthe consolette and the wall. Refer to the typicalinstallation and dimensional drawings figures 14
and 15.
Type of InstallationA typical broadcast installation for a dual channel
studio system using the BC -6A Consolette is shown infigure 16.
WARNINGDo not remove top cover or open frontpanel with power turned on unlessthoroughly familiar with this equipment.High voltages appear on the etched wiringboards and terminal blocks. Caution mustbe exercised when replacing tubes or servic-ing this equipment with power turned on.
Tube InstallationTubes are not supplied with the consolette and
must be ordered as MI -11484. Insert the tubes in the
16.25
8-1.06 DIA. KNOCKOU TS
3 EQUAL SPACES @ 2.88 - 8.64
sibJAP1/4% SPACES el, a ea = 8.64 1-
90'
GO":1.-r
38483488-0
Cki
In
Figure 14-Installation Diagram for BC -6A
11
CONDUIT BOX MAY BE SETIN WALL OR FLOOR AS SHOWN
CONSOLETTE
a1 likAW
THREE FLEXIBLESTEEL CONDUITS
Pi
Ca
0Cj
kj
OPTIONAL METHOD eiOF INSTALLATION
ClIGl
rj
fa
/777. /C /7/7FLOOR
lezn1
WINDOW
S CONDUITBOX
WALL
.d/2.17,777G <7a7CONDUIT 484337
Figure 15-Typical Cable installation
sockets as called for by figure 20. Install the selected12AY7 (MI -11299) tubes in the sockets nearest thefront (or top) of the preamplifiers and boosteramplifier printed wiring boards. Slip the shields overthe tubes where tube shield ground straps are pro-vided on the sockets making certain that the groundstrap is wedged between the tube envelope and theshield.
Power Supply Connections
The Consolette has two power supply units, 5P51and 5PS2; each unit powers a single channel andalternate pre -amplifiers which provides a greater con-tinuity of service. Both units are coMpletely self-contained.
When shipped, the power transformers are con-nected for power line voltage of 110 to 120 volts. Ifthe line voltage is outside this range, remove the fourscrews in each corner of the power supply chassis.Turn the power supply units chassis upside down.Remove the wire leading to terminal #3 of thepower transformer 4T1. If the line voltage is between100 and 110 volts, connect this wire to terminal #2;if it is between 120 and 130 volts, connect the wire toterminal #4. Replace the Power Supply. Connect thea.c. power line to the barrier type terminal block
4TB1 directly behind the power transformer onpower supply 5P51.
Microphones, Turntables, Tape Recorders andFilm Projectors
Connect microphones and turntables according tothe table of connections on 5TB1. All microphonesinstalled in the same studio should be phased alike.The input transformers 5T1 through 5T7 are con-nected for a balanced 150 -ohm input. If a 600 -ohminput is desired, reconnect as shown for 5T8 by re-moving the jumper between terminals 1 and 3 and4 and 6 and jumper terminals 3 and 4. Remove thewire leading to terminal 5 and connect to terminal 4.
If a 37.5 ohm input is desired, remove the jumpersbetween terminals 1 and 3 and 4 and 6 and jumper1 and 5 and 2 and 6. A center tap is not availablefor this impedance. If the tape recorders and filmprojectors have a higher output than microphonelevel ( -50 dbm), an attenuator network (pad)should be connected between the output of eachrecorder or projector and the input of the consolette.
Remote Line and Network InputsTwo 600/600 ohm pads, 5AT15 and 5AT16,
having a loss of 30 db are inserted ahead of the input
12
transformers 5T8 and 5T9 respectively. This pad maybe modified or removed if so desired. The inputtransformers 5T8 and 5T9 are connected for 600 -ohminput. If desired they may be connected for 150 -ohmsby arranging the jumpers as shown in the schematicand wiring diagrams for 5T1.
Line EqualizerA line equalizer such as the RCA BE -2A
(MI -11752) may be connected between terminals45-46 of 5TB1 (input) and 49-50 (output). If afour terminal equalizer is used, the jumpers between45-49 and 46-50 should be removed.
Program LinesThe program output lines, LINE 1 and LINE 2,
are connected to terminals 73 and 74, and 75 and 76respectively. A dividing and isolation network havinga loss of 6 db is included in the consolette.
External Monitor OutputExternal monitor amplifiers may be connected to
the built-in bridging pads 5AT17 and 5AT18, havingan output impedance of 600 ohms, by making con-nections to terminals 77 and 78 for the CH 1 EXT.MON 1 and terminals 79 and 80 for the CH 2EXT. MON 2.
Loudspeaker ConnectionsThe control room speakers are connected to
terminals 89 and 90 and 91 and 92. Studio A speakeris connected to terminals 93 and 94; Studio B speakerto terminals 95 and 96 and the Announce Boothspeaker to terminals 97 and 98.
The loudspeakers should have a voice coil imped-ance of 15-16 ohms. For other voice coil impedances,a matching transformer is suggested.
RI
R5
R2
R2
Figure 16-Fixed Pads 5AT15 15AT161 and5.4717 ISATIS/
External Connections
Audio wiring should be segregated into low level(microphone, turntable, tape recorder or film) andhigh level (line input and output) cables or conduits;low level audio wiring should be kept away from ACpower and signal light circuits. Connect a ground tothe heavy bus wire adjacent to the audio terminalblock.
CONNECTIONS AT TERMINAL BLOCK 5TBI
CR MicrophoneStudio A MicrophoneAnnounce Booth MicrophoneStudio A Microphone 2Studio B Microphone 3Studio A Microphone 3Studio B Microphone 4Studio A Microphone 4Studio B Microphone 5Studio A Microphone 5Tape t
Film I
Turntable I
Tape 2Film 2
Turntable 2NetworkRemote LineRemote Line 2Remote Line 3Remote Line 4Remote Line 5Equalizer InputEqualizer OutputCUE ICUE 2
44/CUE 3JLine Amp CH 1 (output)Line Amp CH 2 (output)PGM TB MON (Input CH 1)PGM TB MON (Input CH 2)Line t OUTLine 2 OUTEXT. MON CH IEXT. MON CH 2PGM TB MON (output) (4 ohm)PGM TB MON (output) (600 ohm)CUE FEED MON (output) (4 ohm)CR CUE (speaker)CR MON (speaker)ST A (speaker)ST B (speaker)AN B (speaker)24 v Relay supply
.,,Control Room CH 1 Signal Light Rly.',Control Room CH 2 Signal Light Rly.',Studio A CH 1 Signal Light Rly.vStudio A CH 2 Signal Light Rly.',Studio B CH 1 Signal Light Rly.'Studio B CH 2 Signal Light Rly.
ANN Booth CH 1 Signal Light Rly.ANN Booth CH 2 Signal Light Rly.
1-2
3-45-67-8 h9-10
11-12
13-1415-1617-1819-2021-2223-2425-2627-2829-3031-3233-3435-3637-3839-404I-4243-4445-4649-5053-5455.5657-5865-6667-6869-7071-7273-7475-7677-7879-8081-8283-8487-8889-9091-92
93-9495-9697-98
101-102105-106107-108109-11'0111-112113-114115-116117-118119-120
13
Announce Booth SpeakersIf an announce booth speaker is to be used in
addition to a single studio and control room, as aprogram source for the consolette, the announcebooth speaker should be connected to the Studio Bspeaker terminals (95-96). If the announce booth isused in a two studio installation, an additional relay,5K4, resistor 5R72 and capacitor 5C4 must beinstalled in the space provided on the relay bracketadjacent to the 5K3 relay. These components may beobtained by ordering the MI -11748 Speaker RelayKit. All wiring is provided. Follow the wiringdiagram in making connections.
Warning LightsMI -11702A warning light relays, operated by the
microphone input selector switches, mixer and lineoutput switches may be connected to the appropriateterminals of 5TB1 (see table of connections). Theserelays in turn will actuate the MI -11706 Series ofwarning lights.
Hum AdjustmentsBefore placing the consolette in operation, make
the following adjustments:
1. Set the input selector switches 551 to 5S5 tothe center OFF position. Make sure that theother inputs are terminated in a resistance.
2. Set the mixer output switches 5S9, 11, 13, 15,and 17 to CH 1 and 5S10, 12, 14 and 16 toCH 2.
3. Set mixer and sub -master and master gain con-trols to max. gain position (5AT1 to 5AT11and 5AT14). Set SINGLE -DUAL CHANNELswitch 5S22 to DUAL.
4. With the LINE 1 output switch on CH 1, adjustthe hum control 4R9 on the power supply 5PS1for minimum hum at LINE 1 output terminals73-74. With the LINE 1 output switch onCH 2, adjust the hum control 4R9 on the powersupply 5PS2 for minimum hum at LINE 1output, terminals 73-74.
Cue Switches on Mixer Gain ControlsThe mixer attenuators 5AT6 and 5AT7 in the
Turntable, Tape or Film channels are provided withswitches which connect the output of the first twostages of the pre -amplifiers to the Cue Feed Mon.Amplifier when the cue feed selector switch 5S19 isin the REC. CUE position. This permits the cueingof one turntable, tape recorder, or film projectorwhile the other is feeding program.
If it is desired to have cue switches on the othermixer control, attenuators with built-in cue switchesmay be obtained from Replacement Parts by orderingStock #211003.
VU Meter AttenuatorTwo VU meters, one for each channel, are
mounted on the front panel of the BC -6A Consolette.Each VU meter attenuator is designed to give a meterreading of 100 (0 on the VU scale) with an output
STUDIO A
WARNING
MIKEr MINE MIKE MIKE LIGHTSrpm THE AIR 12 3 5 STUDIO
MONITOR
3 8 0SPEAKER
1S7AUDITION I
M KE
STUDIO B
WARNING
MILIGHTS
KE MIKE ITHE AIR
AUDITION I
STUDIOMONITORSPEAKER
ANNOUNCE BOOTH
WARNINGLIGHTS
ANNOUNCE e--ION THE AIR
AUDITION I
STUDIOMONITORSPEAKER
CONTROLROOM MIKE
WARNINGLIGHTS
ON THE AIR
AUDITION
0TURNTABLE
NO IURNTABLE
NO 2
TAPE REC TAPE REC.NO I NO2
CONTROL ROOM
CONTROLROOM
MONITORSPEAKER
CONTROLROOMCUE
SPEAKER
0 0 00000000
"0 0 0 0 0 0 0 0 0 0
BC -6A
00 0 0 0 0 0
0 0 0
A A A A A AI,/ A A A
,...4PROJECTOR
NO 2
PROJECTOR
NO I
-TRANSMITTER LINE NO I-TRANSMITTER LINE NO2
NETWORK REM REM REM REM REM ExT EAT EXT CH I CH 2FEED IN LINEI LINE,2 LINE) LINE4 LINES CUE I CUE 2 CUES EXT EXT
IN IN IN IN IN IN IN IN MON MON
Figure 17-Typleal Installation for Studio
14
of 8 dbm delivered to a 600 -ohm load connected tothe program output terminals for each channel. If itis desired to have the meters read 100 at anotheroutput level, replace resistors 5R33, 5R34, 5R35 formeter 5M1 and resistors 5R47, 5R48, 5R49 for meter5M2 with the values contained in the table shownbelow:
Output Level(DBA4)
5R33and 5R47
ohms
5R34and 5R48
ohms
5R35and 5R49
ohms
--2 0 3600 omit0 447 4047 167902 883 4482 81804 1296 4896 5220
6 1679 5279 36908 2026 5626 2741
10 2334 5934 2091
12 2603 6203 1621
14 2833 6433 1268
Control CircuitsThe consolette is shipped with the control circuits
wired for installations consisting of a control roomand two studios. Refer to figure 23.
1-- 5518TALKBACK
ST AST B
REM
5519
5ATI 5AT2
PROGRAM MONITORIN PUT
H IH 2
CUE ICUE 2CUE 3
5A112
Single Studio InstallationIf the consolette is to be used with a single studio,
the Studio A and Studio B microphones may becombined in the one studio. To adapt the interlock-ing functions for the type of operation, the strappingon terminal board 5TB2 must be chatiged. Thisterminal board is located on the inside of the panelbetween the two VU meters. Remove all jumper wiresbetween terminals and add jumpers between the fol-lowing terminals: 8-9, 12-19, 13-20, 14-15, 16-17,
21-22 and 23-24.
Talkback InterlockThe control circuits are interlocked to prevent talk -
back to a studio when a studio microphone feeds onoutput line through either channel.
If it is desired to use CH 1 as one audition channelto permit talkback to the studios while a microphoneis feeding an output line through channel 2, installjumpers between terminals 5-20 and 6-7 on terminalboard 5TB2.
POWER5526 5529 5S27
5MI 5525 5XF1 5XF2 5528
SCRIPT SUPPORT
5AT3 5AT4
551 5S2 5S3 554 5S5 556
5ATIO 5ATI I/
\ iSUBMASTERS
CH I a2
5512
5AT5
MASTER5/1114 5521
5M2 5AT8
5AT6
- MIXERS- - - -- _
5520
5AT7
5523 5513 5524 5514 5516 5515CHANNEL LINE! LINE2 1
I I
-SELECTORS -I - - - L -I- -I- -CHI CH 2
557 INPUT SELECTORSL _L _L ___ 1_ J
5517
558
5J2
Figure 18-Control Panel
15
OPERATION
The front panel, figure 18, and the chart ControlFunctions supply complete identification and functionof all controls and switches on the control panel. Itis advisable to be familiar with this information forthorough understanding of the flexibility of theequipment.
Routine Procedure
Turn the power switch ON and allow the equip-ment to warm up approximately 5 minutes. Theoperating procedure for putting a program ON theair from either studio, using any combination ofinputs is as follows:
1. Select the input desired.
2. Move the corresponding CH 1/CH 2 mixerswitch to the desired channel.
3. Turn corresponding mixer attenuator up.
4. Turn the MASTER and SUB -MASTERS 1 or 2gain controls to the level desired. The master gaincontrol 5AT14 should normally be set at or near themaximum clockwise position.
5. Check the level on the VU meter.
6. Monitor the selected input by pressing thePROGRAM TALKBACK Monitor -INPUT pushbut-tons CH 1 or CH 2, to the selected input. The NETor REM inputs may be monitored through head-phones plugged into the jacks 5J1 and 5J2
respectively.
Single and Dual Operation withMaster Gain Controls
The SINGLE CHANNEL/DUAL CHANNELswitch should be set immediately after the power isturned ON. While the program sources may beadjusted by the individual mixer, groups of mixersmay be adjusted with the sub -master or master gaincontrols.
The possible adjustments for each type of opera-tion are as follows:
1. Dual Channel Operation
Dual channel operation is the transmitting oftwo programs over two separate outputs; each pro-gram is a combination of inputs. Each input is
adjusted by its individual mixer. Then adjust theSUB -MASTER gain controls until the VU meters,one for each channel, indicate peaks of 100%. If it isdesired to fade each channel independently, use theappropriate sub -master gain control. If it is desiredto fade both channels simultaneously, use the
MASTER gain control. In the usual operation, how-ever, this control should be set between 16 and 20.Set the LINE 1 and LINE 2 lever switches to thecorresponding CH 1 and CH 2 positions.
2. Single Channel OperationSingle Channel operation is the transmitting of
one program over one or both output lines. The pro-gram sources may be adjusted for the desired outputlevel by the individual mixers or in groups by theSUB -MASTER gain controls. These program sourcesif divided between the outputs, CH 1 or CH 2, maybe adjusted as desired using the SUB -MASTER gaincontrols or the whole program may be faded in orout by means of the MASTER gain control. Set theLINE 1 and LINE 2 output switches to either CH 1or CH 2 as the same program is being fed over boththe CH 1 and CH 2 line amplifiers.
Program Monitoring1. Set the LOUDSPEAKER toggle switches, 5S25
through 5S28, to the PROGRAM TALKBACKposition.
2. Press pushbutton CH 1 or CH 2 of switch 5S18to monitor the output of the line amplifiers for CH 1or CH 2 respectively.
3. Adjust the PROGRAM TALKBACK MONI-TOR gain control 5AT12 for the desired output levelover the loudspeakers.
4. The program monitor will be heard over thecontrol room, studio and announce booth speakersprovided the microphone in the same room is not"ON". By "ON" is meant that an input selectorswitch is set to the particular room (Control Room,Announce Booth, Studio A or B) and its associatedmixer output switch is in either the CH 1 or CH 2position.
Talkback
1. To talkback to Studio A or Ba. Make certain that the studio selected for the
talkback operation is not on the air. Due tointerlocking circuits, it is impossible to talk -back to a studio which is on the air.
b. Press the pushbutton STA or STB on theTALKBACK switch 5S18.
c. Use the control room microphone.
d. Adjust the level by means of the PRO-GRAM-TALKBACK MONITOR gain con-trol 5AT12.
16
CONTROL FUNCTIONS
PanelDesignation Symbol
ColorKnob Function
Coordinatedwith
INPUT SELECTOR SWITCHES
MIC 1
CRST AMIC 2AN BST AMIC 3ST BST AMIC 4ST BST AMIC 5ST BST AREC ITAPE 1FILM ITT 1REC 2TAPE 2FILM 2TT 2REMOTE INPUT
5S1
5S2
5S3
5S4
5S5
5S6
5S7
5S8
Black
Black
Black
Black
Black
Blue
Blue
Black
Connect microphone in control room or in Studio Athrough preamplifier 5AR1 to mixer 5AT1
Connects microphone in announce booth or in Studio Athrough preamplifier 5AR2 to mixer 5AT2
Connects microphone in Studio B or in Studio Athrough preamplifier 5AR3 to mixer 5AT3
Connects microphone in Studio B and Studio A throughpreamplifier 5AR4 to mixer 5AT4
Connects microphone in Studio B and Studio A throughpreamplifier 5AR5 to mixer 5AT5
Connects tape recorder 1, film projector 1 or turntable 1through preamplifier 5AR6 to mixer 5AT6
Connects tape recorder 2, film projector 2 or turntable 2through preamplifier 5AR7 to mixer 5AT7
Connects from 5 lines through the preamplifier 5AR9to mixer 5AT9
5S9, 5AT1
5S10, 5AT2
5S11, 5AT3
5512, 5AT4
5513, 5AT5
5S14, 5AT6
5515, 5AT7
5S17, 5AT8
MIXER ATTENUATORS
MIC 1
MIC 2
MIC 3MIC 4MIC 5REC 1
REC 2
NETWORKREMOTE
5AT15AT2
5AT35AT45AT55AT6
5AT7
5AT85AT9
BlackBlack
BlackBlackBlackBlue
Blue
BlackRed
Controls the gain of mic in control room and Studio AControls the gain of mic in announce booth andStudio AControls the gain of mic in Studio B and AControls the gain of mic in Studio B and AControls the gain of mic in Studio B and AControls gain for tape reproducing, film or turntablefor unit 1
Controls gain for tape reproducing, film or turntablefor unit 2Controls gain of network lineControls gain for remote lines (5)
5S1, 5S95S2, 5510
5S3, 5S115S4, 5S125S5, 5SI35S6, 5S14
5S7, 5S15
5J1, 5S165S8, 5S17
CHANNEL SELECTOR SWITCHES
CH 1- CH 2 5595S105S1155125S135S145S1555165517
BlackBlackBlackBlackBlackBlueBlueBlackRed
Connects the output of preamplifiers to CH 1 busor CH 2 bus
5AT I5AT25AT35AT45AT55AT65AT75AT85AT9
GAIN CONTROLS
MASTERSUB MASTER ISUB MASTER 2
5AT145ATI15AT10
BlackGreenGreen
Controls gain of CH 1 and CH 2 outputsControls the gain for CH 1 output onlyControls the gain for CH 2 output only
17
PanelDesignation Symbol
ColorKnob Function
Coordinatedwith
4
LINE OUTPUT SWITCHES
LINE 1LINE 2
5S235S24
GreenGreen
Selects channel 1 or channel 2 outputSelects channel 1 or channel 2 output
SELECTOR SWITCH
SINGLE CHANNEL
DUAL CHANNEL
5S22 Black Selects type of operation; two independent outputchannels (DUAL) or single output channel with splitmixers (SINGLE)
REMOTE LINE CONTROLS
REM CUE PHONE
REMOTEPHONEOVERRIDE
5S20
5521
Black
Black
Positions: CH 1- CH 2 - Remote Line 1 through 5.Selects input to monitor phone (5J2). Selects remoteline for talk -back and CUE
Three -position switch; PHONE to hear the remoteprogram and determine if it is one desired throughheadphones in jack 5J2. OVERRIDE position connectsinput of PGM TB MON to unused remote lines. Signalfrom remote line overrides program being monitored.REMOTE position used to talkback to remote line.
5S85521
5AR16
MONITORING CONTROLS
PROGRAMMONITOR INPUT
ST AST BREM
CH 1CH 2CUE 1CUE 2CUE 3
PROGRAM TALK-BACK
MONITOR GAIN
CUE FEEDMONITOR INPUTSELECTOR
OFF
REC: CUE
REC 1REC 2NETREMOTECH 1CH 2
CUE FEEDMONITORGAIN CONTROL
5SI8
5AT12
5S19
5AT13
RedRedRed
BlackBlackBlackBlackBlack
Black
Black
Black
Selects input for program talkback monitor channel
Pushbuttons Talkback to Studio ATalkback to Studio BTalkback to Remote Line
Pushbuttons Monitor Program CH IMonitor Program CH 2Monitor Cue Line 1Monitor Cue Line 2Monitor Cue Line 3
Adjusts output Level of program-talkback monitoramplifier
Selects input for Cue Feed Monitor amplifier
Recorded Input Channels
REC. Input 1REC. Input 2NETRemote lines 1 to 5Channel 1
Channel 2
Controls output Level of Cue Feed Monitor Amplifier
5ATI2
5S20, 5S21
5518
5ATI3
5S6, 5S75AT6, 5AT7556, 5AT65S7, 5AT75AT85S8, 5AT9
5S19
LOUDSPEAKER SWITCHES
CRST AST BAN B
5S255S265S275S28
ChromeChromeChromeChrome
Control Room SpeakerStudio A SpeakerStudio B SpeakerAnnounce Booth Speaker
Each toggle switch has two positions: PROGRAM-TALKBACK: CUE FEED
18
e. In a single studio installation, use the STAbutton to talk to the studio and the STBbutton to talk to the Announce Booth.
f. In a two -studio installation, use any talkbackbutton to talk to the Announce Booth.
NOTE : The above procedure "f" is applicableonly when the optional relay is installed.
2. To talkback over a remote line
a. Press the REM pushbutton of the TALK -BACK switch 5S18.
b. All loudspeakers are silent.
c. Select the remote line on the REMOTE -CUE -PHONE selector switch 5S20.
d. Place the OVERRIDE -PHONE -REMOTEswitch 5S21 at the REMOTE position.
Cue Line Monitoring
Three cue lines may be selected by means of theCUE 1, CUE 2 and CUE 3 buttons of the switch5S18. This is heard over the program talkbackmonitor.
Cue and BackgroundSet the loudspeaker toggle switches, 5S25 through
5S28 which correspond to the speaker over which cueor background sound is to be transmitted to theCUE FEED position.
NOTE: If a separate CUE FEED speaker is in-stalled in the Control Room, it is not necessary tothrow the switch 5S25 to the CUE FEED position.
1. To cue recorded input channelsa. Set the cue feed monitor input selector switch
5S13 to REC CUE position.
b. Set the selector switch 5S6 or 557 to thesource to be cued-TAPE, TT, FILM.
c. Turn the mixer gain control of the channelsto be cued to 0 or maximum counter clock-wise position.
d. Adjust the gain by means of CUE -FEED -MONITOR GAIN control, 5AT13.
2. To cue or feed background from the REC 1or REC 2 channels
a. Set 5S19 to REC 1 or REC 2 position.
b. Set 556 or 5S7 to the desired source.
c. Output level is determined by the positionof the mixer gain controls 5AT6 or 5AT7and 5AT13.
3. To cue or feed background from NETWORKor REMOTE LINES
a. Set at 5S19 to the NET or REMOTEposition.
b. Select the remote source by means of 5S8.
c. Adjust the level by means of 5AT8 or 5AT9and 5AT13.
4. To derive cue or background with switch 5S19set at CH 1 or CH 2
a. Care should be taken not to feed backgroundto a studio from CH 1 or CH 2 if a micro-phone in that studio is a source for CH 1 orCH 2 since the loudspeakers are not mutedwhen connected to the cue feed monitoramplifier.
b. Background may be fed to a studio from aprogram originating in another studio, con-trol room or announce booth provided thereis sufficient acoustic isolation.
Locating Program Over Remote Lines
If it is not known over which of the five remotelines a program is to be received, either of the follow-ing procedures may be used:
1. Using Headphones
a. Plug a headset into the MONITOR PHONEjack 5J2.
b. Set the switch 5S21 to the PHONE position.
c. Rotate the. switch 5S20 through line 1 toline 5 position until the desired program isheard.
d. The pointer of the switch knob (5S20) indi-cates the number of the desired line.
2. Using Monitor Speaker
a. Set the switch 5S21 to the OVERRIDEposition.
b. Rotate the switch 5S20 through line 1 toline 5 positions until the desired programis not heard.
c. The pointer of the switch (5S20) knob indi-cates the number of the desired line.
NOTE: With either of the above methods, it is notpossible to hear a program originating over a remoteline which is selected by the remote input selectorswitch 5S8. Do not depress the CH 1 or CH 2 buttonsof the PROGRAM-TALKBACK MONITOR inputselector switch 5S18 while using the override feature.
18
e. In a single studio installation, use the STAbutton to talk to the studio and the STBbutton to talk to the Announce Booth.
f. In a two -studio installation, use any talkbackbutton to talk to the Announce Booth.
NOTE: The above procedure "f" is applicableonly when the optional relay is installed.
2. To talkback over a remote linea. Press the REM pushbutton of the TALK -
BACK switch 5518.
b. All loudspeakers are silent.
c. Select the remote line on the REMOTE -CUE -PHONE selector switch 5S20.
d. Place the OVERRIDE -PHONE -REMOTEswitch 5S21 at the REMOTE position.
Cue Line MonitoringThree cue lines may be selected by means of the
CUE 1, CUE 2 and CUE 3 buttons of the switch5518. This is heard over the program talkbackmonitor.
Cue and BackgroundSet the loudspeaker toggle switches, 5S25 through
5S28 which correspond to the speaker over which cueor background sound is to be transmitted to theCUE FEED position.
NOTE: If a separate CUE FEED speaker is in-stalled in the Control Room, it is not necessary tothrow the switch 5S25 to the CUE FEED position.
1. To cue recorded input channelsa. Set the cue feed monitor input selector switch
5S13 to REC CUE position.
b. Set the selector switch 5S6 or 5S7 to thesource to be cued-TAPE, Tr, FILM.
c. Turn the mixer gain control of the channelsto be cued to 0 or maximum counter clock-wise position.
d. Adjust the gain by means of CUE -FEED -MONITOR GAIN control, 5AT13.
2. To cue or feed background from the REC 1or REC 2 channels
a. Set 5S19 to REC 1 or REC 2 position.
b. Set 5S6 or 5S7 to the desired source.
c. Output level is determined by the positionof the mixer gain controls 5AT6 or 5AT7and 5AT13.
3. To cue or feed background from NETWORKor REMOTE LINES
a. Set at 5S19 to the NET or REMOTEposition.
b. Select the remote source by means of 5S8.
c. Adjust the level by means of 5AT8 or 5AT9and 5AT13.
4. To derive cue or background with switch 5519set at CH 1 or CH 2
a. Care should be taken not to feed backgroundto a studio from CH 1 or CH 2 if a micro-phone in that studio is a source for CH 1 orCH 2 since the loudspeakers are not mutedwhen connected to the cue feed monitoramplifier.
b. Background may be fed to a studio from aprogram originating in another studio, con-trol room or announce booth provided thereis sufficient acoustic isolation.
Locating Program Over Remote Lines
If it is not known over which of the five remotelines a program is to be received, either of the follow-ing procedures may be used:
1. Using Headphones
a. Plug a headset into the MONITOR PHONEjack 5J2.
b. Set the switch 5521 to the PHONE position.
c. Rotate the. switch 5S20 through line 1 toline 5 position until the desired program isheard.
d. The pointer of the switch knob (5S20) indi-cates the number of the desired line.
2. Using Monitor Speaker
a. Set the switch 5S21 to the OVERRIDEposition.
b. Rotate the switch 5S20 through line 1 toline 5 positions until the desired programis not heard.
c. The pointer of the switch (5520) knob indi-cates the number of the desired line.
NOTE: With either of the above methods, it is notpossible to hear a program originating over a remoteline which is selected by the remote input selectorswitch 5S8. Do not depress the CH 1 or CH 2 buttonsof the PROGRAM-TALKBACK MONITOR inputselector switch 5S18 while using the override feature.
19
To Feed Cue to a Remote Line1. Select the program to be fed over a remote line
on the Program Talkback Monitor amplifier.2. Select the remote line over which the cue signal
is to be fed by means of the switch 5S20.3. Set the switch 5521 to REMOTE position.4. Adjust the level by means of the PROGRAM-
TALKBACK MONITOR GAIN control 5AT12.
Emergency OperationIn case of failure of one power supply, the program
may be continued with reduced facilities on onechannel. Power Supply 5PS1 supplies power to odd -
numbered pre -amplifiers, channel 1 booster and lineamplifiers, cue feed monitor amplifier, and channel 1VU meter lamps. Power Supply 5P52 supplies powerto the even -numbered pre -amplifiers, the channel 2booster and line amplifiers, the program talkback
monitor amplifier and the channel 2 VU meterlamps. Each power supply is individually fused. Thefuse holders are mounted on the front panel betweenthe VU meters.
In case of failure of the power supply 5PS1, switchthe mixer output selector switches and line outputselector switches to CH 2. Use only MIC 2, MIC 4,REC 1 and NET mixing channels. If a remoteprogram is to be carried, the remote line should bepatched into the network input.
In case of failure of the power supply 5PS2, switchthe mixer output selector switches and the line outputswitches to the channel 1 position. Use only MIC 1,MIC 3, MIC 5, REC 2 and REMOTE mixingchannels. If it is necessary to transmit a networkprogram, patch the network line into one of theremote line inputs. Use the cue feed monitor amplifierfor monitoring the program.
MAINTENANCEThe BC -6A Dual Channel Audio Consolette may
be easily serviced without disturbing the installation.The top cover which can be easily removed is fastened
to the consolette by four Camloc fasteners. The frontpanel is hinged at the bottom and secured at the topby two Camloc fasteners. The front panel is held inthe open position by two fall -supports.
Tubes
The tubes of the amplifiers and power supplyshould be checked periodically either in a tube testeror by measuring the socket voltages. Refer to theTube Socket Voltage chart. The values shown are
with a voltmeter having a resistance of20,000 ohms -per -volt. Slight variations may be dueto component tolerances.
TUBE SOCKET VOLTAGESTubeSocket
1 2 3 4 5 6 7 8 9
PRE -AMPLIFIER (5AR1 - 5AR9)IXVI 175-205 0 4-5 * * 140-170 0 1.7-2.0 **IXV2 115-140 0
1
3-4 * * 285 - -0.2 +0.2 *BOOSTER -PREAMPLIFIERS (SARI 0 - SAR12)
IXVI 175-205 0 4-5 * 140-170 0 1.7-2.0 **IXV2 115-140 0 3-4 * * 285 - 110-130 **
PROGRAM AMPLIFIER (5AR13 - 5AR14)2XV1 130-150 0 1.15-1.40 * * 180-210 - 55-65 **2XV2 280 0 10-12 * * 280 0 10-12 **2XV3 280 0 10-12 * * 280 0 10-12 **
MONITOR AMPLIFIER (SARIS - 5AR16)3XV I 125-145 0 1.10-1.30 * 225-250 - 38-48 **
3XV2 - * 285-290 290 - - ** 15-18 -3XV3 - * 285-290 290 - - ** 15-18 -
POWER SUPPLY (5PS1 - 5PS2)4XVI - 380*** - 365 AC - 365 AC - 380*** -4XV2 -380 -I
365 AC* 365 AC* - -380 365 AC - -5 VAC between points marked ***
6.3 VAC between terminals marked by single and double asterisks.
O
5AT
I5A
T2
5AT
3
5J I
5R I
I5R
74
5R I
25R
73
5R27
5AT
45A
T II
5AT
IO5A
T5
5AT
65A
T7
5 A
T9
R75
5R14
5R13
e5R
28
5R16
1111
1111
w":
7r5R
235R
15.7
.: 1.
ITA
.77-
fl
5RI7
1
.
Ili\A
lt'5R
24
5R18
LIA
,. LL
LLI
5R2
I.
.
5R88
5R22
5R89
5R8
5TB
25R
375R
385R
405R
415R
725R
57S
AT
S
5R36
- 5R
34 -
5R
33 -
5R35
-5R
395R
7 I
5R58
5R20
5R70
5R50
- 5
R48
-5R
47 -
5R49
-5R
535R
435R
265R
255R
695R
5I -
5R
52 -
5R54
-5R
555R
425A
T I
4
12A
X7
5AR
I512
AX
7I2
AX
76V
6GT
HU
M A
DJ.
5R4G
Y5C
I5R
655C
35K
3O
PT
ION
AL
I2A
U7C
HI
5AR
165T
BI
5PS
I6X
45R
645R
665R
67F
5C
45A
R13
T2A
X7
5R68
12A
U7
6V6G
T
5T12
5TI I
5T13
5110
II-12
AY
7
9-M
1-11
299
SE
L,I2
AY
7
CA
M L
OC
FA
ST
EN
ER
PR
EA
MP
LIF
IER
S5A
RI-
5AR
7
5AT
135M
5519
5AT
125T
145T
B2
5525
-28
5M2
5AT
I4
BO
OS
TE
RA
M P
LI F
IER
5AR
I2
6X4
5R4-
GY
5PS
2
BO
OS
TE
RA
MP
LIF
IER
S5A
R11
5AR
IO
LIN
EA
MP
LIF
IER
S5A
R9
5AR
8
SE
L12A
Y7
22
Fuse
Two power fuses are located on the control panelcenter top. These fuses should be replaced only witha Type 3AG, 3 amp time lag fuse.
Care of Variable AttenuatorsTo remove the attenuator cover, press the latch
under the cover and remove it by twisting the covercounterclockwise. The rear section of the MASTERgain control 5AT14 may be removed to gain accessto the contacts of the front section. Apply Davenoilto the contacts and rotate the knob several times.Wipe the contacts clean using a soft cloth and applya thin film of Davenoil. Replace attenuator cover.A bottle of Davenoil is packed with the consolette.
Care of Switches. Relays and SocketsThe switches and relay contacts do not require
periodic maintenance and should not be tamperedwith. Contacts of the tube sockets are cleaned best, bypulling tubes in and out of the socket several times.
Replacement of Input Transformers 5T1 to 5T9To gain access to the input transformers, the pre-
amplifier mounting shelf must be loosened. Removethe top cover and open the front panel if desirable.Remove the four screws and hardware located be-tween the SARI and 5AR2 and between the 5ARIOand 5AR11 amplifier circuit boards. This hardware isvisible in figure 20. Lift the shelf up from the frontand tilt it backwards to expose the transformers.
Replacement of Output Transformers 5T10 thru5T13, and Attenuators 5AT17 and 5AT18
To gain access to the terminals and mountinghardware of the output transformers and pads 5AT17and 5AT18, the mounting shelf of the program andmonitor circuit boards must be tilted up. Remove thefour screws, one from each corner. No leads need tobe removed from the circuit boards to service theseassemblies.
Power Supplies 5PS1 and 5PS2Each power supply chassis is secured to the con-
solette cabinet by four screws, one in each corner.To gain access to the components and wiring under-neath the chassis, remove the screws and carefullyturn the power supply upside down. The intercon-necting leads are long enough to permit this changein position without disconnecting them. Make surethat the power is turned off when attempting toservice the power supplies.
Servicing of the Etched Wiring BoardAssemblies
The etched wiring boards are made of .062 inchthick paper base phenolic laminate to one side of
which is bonded a thin sheet of copper. The conduc-tor pattern is formed by an etching process. Com-ponent leads are threaded through holes which arepunched into the board. The ends of the leadsextending through the board are bent over againstthe copper conductors. The complete assembly is
subsequently dip -soldered.
Components may be replaced easily by followingthese simple instructions. Care should be observednot to break or crack the board by undue stress or todamage the bonding adhesive by applying too muchheat during soldering.
1. Tools Required
1. A small (35 watt or less) pencil type solder-ing iron
2. A pair of small diagonal cutters
3. A pair of small long nose pliers
4. A scribe or pick
5. A small knife
2. Emergency Repairs
If it is known which compound is defective,it may be replaced without removing the boardfrom its mounting.
a. In the case of a small component, such as a1/2 or 1 watt resistor, cut the component inhalf using diagonal pliers. Crush the bodyby means of the long nose pliers. This isdone to obtain extra lead length. In the caseof larger components, clip the leads as closeas possible to the component body.
b. Using long nose pliers, form a loop of thelead ends as shown in figure 21.
c. Thread the leads of the new componentsthrough these loops. Cut off the excess lead,crimp and solder the connection.
3. Permanent Repairs
a. Remove the hardware fastening the board tothe chassis and tilt board up.
b. Isolate the defective component. If it is
necessary to disconnect a component fromthe circuit for test, heat the junction of thecomponent lead and the etched wiring withthe soldering iron. The heat should be con-centrated on the component lead rather thanthe etched wiring pattern. Pry up andstraighten the bent -over portion of the com-ponent lead with a knife blade, then pulllead through the hole with pliers.
23
c. To remove the defective component, snip theleads off at the component side of the board.See figure 21.
d. Using a small soldering iron (35 watt orless) heat the leads and remove them fromthe printed wiring side of the board. Becareful not to apply too much heat or forceto avoid damage to the thin copper conduc-tors.
e. Clean and preform the leads of the newcomponent and insert through the holesuntil the component body is tight againstthe board.
f. On the circuit side, grasp the componentlead and bend it over in the direction ofthe circuit pattern.
g. Crimp the wire tightly against the board (seefigure 21), and cut off the excess componentlead. Leave about 1/16 inch of wire pro-truding from the edge of the hole.
h. Heat the lead and apply rosin core solder.DO NOT USE PASTE OR ACID FLUX.Remove excess rosin from the joints withalcohol.
i. Replace the circuit board, using the originalhardware.
4. Replacement of Tube Socket
Heat each socket terminal lead and pry upand straighten with knife blade. Pull socket outapplying heat to terminal leads, if necessary.Clean holes free of solder. Prepare new socketfor installation as follows: If tube shield groundstrap (stock #210773) is required, insert strapfrom top of socket in slot provided until firmlyseated. Small ridges on strap must point out-ward. Bend lead terminal of strap radiallyoutward.
Using the old socket as a guide, bendterminal leads at right angles to fit mountingholes provided in board. Insert socket terminalsthrough holes making sure that socket terminalnumbers correspond to the numbers etched onthe board near the tube socket mounting holes.Bend socket terminals radially inward. If neces-sary, clip off excess length to prevent shortcircuit with adjacent conductors. Solderterminals to the etched wiring.
TO REMOVE DEFECTIVE COMPONENT
HEAT 8 PULL OUT HERE
GUT OFF HERE
GUT OFF HERE SOLDER
CONDUCTORSTRIP
TO INSTALL NEW COMPONENT
BEN2PLIERSRE
COMPONENTBOARD
TO REMOVE COMPONENT FROM TOPOF CIRCUIT BOARD
SOLDER PIGTAIL OFNEW COMPONENT TOLOOPED END.
-8901158-1
Figure 21-Replacement of Components inPrinted Circuits
LIST OF PARTS
Symbol DescriptionStockNo.
CONSOLETTE5AR1 to
5AR9
5ARIO,5AR11,5AR12
Preamplifier: circuit board assem-bly complete with 5 capacitors,13 resistors, 2 tube sockets and2 ground straps. (Componentslisted under Preamplifier)
Preamplifier: circuit board assem-bly complete with 5 capacitors,12 resistors, 2 tube sockets and2 ground straps. (Componentslisted under Preamplifier)
210998
210999
Symbol DescriptionStockNo.
5AR13,5AR14
Program Amplifier: circuit boardassembly complete with 6 capaci-tors, 12 resistors and 3 tubesockets. (Components listed underProgram Amplifier) 211000
SARIS,
5AR16
Monitor Amplifier: circuit boardassembly complete with 7 capaci-tors, 13 resistors and 3 tubesockets. (Components listed underMonitor Amplifier) 211001
24
Symbol DescriptionStockNo.
5AT1 to5AT5
Resistor: variable, attenuator,100,000 ohm, pot., 20 steps, 2DBper step, last step tapered toinfinity 21 1002
5AT6,5AT7
Resistor: variable, attenuator,100,000 ohm, pot., 20 steps, 2DBper step, last step tapered toinfinity with cue switch 211003
5AT8 to5AT11
Resistor: variable, attenuator,100,000 ohm, pot., 20 steps, 2DBper step, last step tapered toinfinity. Same as 5AT1 211002
5AT12,5AT13
Resistor: variable, composition,100,000 ohm ± 10%, 2 w 209286
5AT14 Resistor: variable, attenuator,15,000/15,000 ohm, dual pot.,20 steps, 2DB per step, last steptapered to infinity 211004
5AT15,5AT16
Fixed Pad: Parts listed underFixed Pads
5AT17,5AT18
Fixed Pad: Parts listed underFixed Pads
5C1 to Capacitor: fixed, paper, 0.47 mf5C3 ± 20%, 200 v 73787
5C4 Not Used5C5 Capacitor: fixed, paper, 2700 mmf
± 10%, 600 v 735995F1, 5F2 Fuse: 3 amp, 125 v, slow -blow type 991645J1, 5J2 Jack: open circuit 534015K1, 5K2, Relay: D.P.D.T. 205255
5K35M1, 5M2 Meter: VU 2052495PS1, 5PS2 Power Supply: Parts listed under
Power SupplySRI to Resistor: fixed, composition, 150
5R5 ohm ±10%, 1/2 w 5021155R6 Resistor: fixed, composition, 4700
ohm ± 10%, 1/2 w 5022475R7 Resistor: fixed, composition, 680
ohm ± 10%, 1/2 w 5021685R8 Resistor: fixed, composition, 560
ohm at 10%, 1/2 w 5021565R9, 5810 Resistor: fixed, composition, 100,000
ohm ±5%, 1/2 w 5024105R11 to Resistor: fixed, composition, 22,000
5R28 ohm ±5%, 1/2 w 5023225R29 Resistor: fixed, composition, 18,000
ohm ±5%, 1/2 w 5023185R30, 5R31 Resistor: fixed, composition, 15,000
ohm ±5%, 1/2 w 5023155R32 Resistor: fixed, composition, 18,000
ohm ±5%, 1/2 w. Same as 5R29 5023185R33 Resistor: fixed, composition, 2000
ohm ± 5%, 1/2 w 5022205R34 Resistor: fixed, composition, 5600
ohm ±5%, 1/2 w 5022565R35 Resistor: fixed, composition, 2700
ohm ±5%, 1/2 w 5022275R36 to Resistor: fixed, composition, 100
5R41 ohm ±5%, 1 w 512110
Symbol DescriptionStorkNo.
5R42 to Resistor: fixed, composition, 5605R44 ohm ± 10%, 1/2 w. Same as 5R8 502156
5R45, 5R46 Resistor: fixed, composition, 27,000ohm ± 5%, 1/2 w 502327
5R47 Resistor: fixed, composition, 2000ohm ±5%, 1/2 w. Same as 5R33 502220
5R48 Resistor: fixed, composition, 5600ohm ± 5%, 1/2 w. Same as 5R34 502256
5R49 Resistor: fixed, composition, 2700ohm ± 5%, 1/2 w, Same as 5R35 502227
5R50 to Resistor: fixed, composition, 100
5R55 ohm ±5%, 1 w. Same as 5R36 5121105R56 to Resistor: fixed, composition, 560
5R58 ohm ±10%, 1/2 w. Same as 5R8 5021565R59 Resistor: fixed, composition, 100,000
ohm ±5%, 1/2 w, Same as 5R9 5024105R60 Resistor: fixed, composition, 27,000
ohm ± 5%, 1/2 w. Same as 5R45 5023275R61, 5R62 Resistor: fixed, composition, 1500
ohm ±5%, 1 w 5122155R63 Resistor: fixed, composition, 820
ohm ±5%, '1/2 w 5021825R64 to Resistor: fixed, wire wound, 15
5R67 ohm ± 10%, 5 w 974415R68 Not Used5R69 to Resistor: fixed, wire wound, 15
5R71 ohm ± 10%, 5 w. Same as 5R64 974415R72 Not Used5R73, 5R74 Resistor: fixed, composition, 4700
ohm ± 10%, 1/2 w. Same as 5R6 5022475R75 Resistor: fixed, composition, 680
ohm ± 10%, 1/2 w. Same as 5R7 5021685R76 to Resistor: fixed, composition, 4700
5R85 ohm ± 10%, 1/2 w, Same as 5R6 5022475R86 Resistor: fixed, composition, 680
ohm ± 10%, 1/2 w, Same as 5R7 5021685R87 Resistor: fixed, composition, 10,000
ohm ± 10%, 1/2 w 5023105R88 Resistor: fixed, composition, 150
ohm ± 10%, 1/2 w, Same as 5111 5021155R89 Resistor: fixed, composition, 10,000
ohm ± 10%, 1/2 w. Same as 5R87 5023105R90, 5R91 Resistor: fixed, composition, 560
ohm ±5% 1/2 w 5021565R92, 5R93 Resistor: fixed, composition, 680
ohm ±10%, 2 w 5221685S1 to 5S5 Switch: key lever, 4 "A", 4 "B"
and 4 "D" type contacts, 2 waylocking 211008
5S6, 5S7 Switch: key lever, 4 "D" typecontacts, 2 way locking 211009
5S8 Switch: rotary, wafer type, 14
circuit, 3 section, 6 position,shorting contacts 211010
5S9 to Switch: key lever, 4 "A", 4 "B"5S13 and 2 "D" type contacts, 2 way
locking 941415514 to Switch: key lever, 2 "D" type con -
5S17 tacts, 2 way locking 941425S18 Switch: push, multiple, 8 plungers,
3 non -locking, 5 interlocking 94440
25
Symbol DescriptionStockNo.
5519 Switch: rotary, wafer type, 1 circuit,1 section, 8 position, non -shortingcontacts 211012
5520 Switch: rotary, wafer type, 4
circuit, 4 section, 8 position, non -shorting contacts 211013
5521 Switch: key lever, 2 "A", 4 "B"and 2 "C" type contacts, 2 waylocking 94144
5522 Switch: rotary, wafer type, 3 circuit,1 section, 2 position, shortingcontacts 211014
5523, 5524 Switch: key lever, 2 "A", 6 "B"and 4 "E" type contacts, 2 waylocking 211015
5525 to Switch: toggle, DPDT, 3/6 amp5S28 @ 250/125 v, bat handle 52133
5S29 Switch: toggle, SPST, 3 amp@ 250 v, bat handle 46425
5T1 to 5T9 Transformer: audio, input 2053265T10, 5T11 Transformer: audio, output 2092815T12, 5T13 Transformer: audio, output 2074345TI4 Transformer: audio, input 2110175XF1,
5XF2Holder: fuse 205914
Board: terminal, 46 terminals 211030Board: terminal, 120 terminals 211031Button: push, black 32120Button: push, red 32121Clamp: cable, white nylon, 3/16"
I.D. 209652Clamp: cable, white nylon, 3/8"
I.D. 210391Fastener: receptacle, silicon, bronze 94641Fastener: stud steel, with retaining
ring 96145Grommet: rubber 37396Knob: control, black with white
filled pointer, 2" dia. 17269Knob: control, black with white
filled pointer, 1-7/16" dia. 17268Knob: control, blue with white
filled pointer, 2" dia. 94444Knob: control, red with white filled
pointer, 2" dia. 94446Knob: control, green with white
filled pointer, 2" dia. 96928Knob: key lever switch, blue 94442Knob: key lever switch, green 96929Knob: key lever switch, red 94441Mounting: shock, isolator 211029Oil: attenuator 20752Ring: retaining, fastener 98480Shield: tube, 53/64" I.D. x 1343"
ht., aluminum 211035Support: fall, single link, 61/4" lg.
with 51/2" slot 94647
PREAMPLIFIERS
1C1 Capacitor: fixed, paper, 0.047 mf± 10%, 400 v 73553
Symbol DescriptionStockNo,
1C2
1C3, tC4
Capacitor: fixed, paper, 0,1 mf± 10%, 400 v
Capacitor: fixed, paper, 0.047 mf73551
±10%, 400 v. Same as 10. 73553105 Capacitor: fixed, paper, 1.0 mf
± 10%, 200 v 2080771R1 Resistor: fixed, composition, 8200
ohm ±5%, 1 w 5122821R2 Resistor: fixed, composition, 100,000
ohm :1--10%, 1/2 w 5024101R3 Resistor: fixed, composition, 1
megohm ± 10%, 1/2 w 5025101R4 Resistor: fixed, composition, 560
ohm ± 10%, 1/2 w 5021561R5 Resistor: fixed, composition, 160,000
ohm ±5%, 1/2 w 5024161R6 Resistor: fixed, composition, 39,000
ohm ± 10%, 1/2 w 5023391R7 Resistor: fixed, composition, 5600
ohm ±5%, 1 w 5122561R8 Resistor: fixed, composition, 200,000
ohm at 5%, 1/2 w 5024201R9 Resistor: fixed, composition, I
megohm ± 10%, 1/2 w. Same as1R3 502510
1R10 Resistor: fixed, composition, 91,000ohm ±5%, 1 w 512391
IR11 Resistor: fixed, composition, 100,000ohm ±10%, 1/2 w, Same as 1R2 502410
1R12 Resistor: fixed, composition, 9100ohm ±5%, 1/2 w 30671
1R13 Resistor: fixed, composition, 300,000ohm ± 5%, 1/2 w 502430
1R14 Resistor: fixed, composition, 56,000ohm ± 10%, 1/2 w 502356
IRIS Resistor: fixed, composition, 1200ohm -±- 10%, 1/2 w 502212
IXV1, Socket: tube, 9 contact miniature 2092841XV2
Strap: ground, for miniature tubesocket 210773
PROGRAM AMPLIFIER
2C1 Capacitor: fixed, paper, 0.047 mf±10%, 400 v 73553
2C2 Capacitor: fixed, mica, 39 mmf-S-10%, 500 v 39618
2C3, 2C4 Capacitor: fixed, paper, 0.047 mf±10%, 400 v. Same as 20 73553
2C5 Capacitor: electrolytic 20 mf-10 +50%, 450 v 99149
2C6 Capacitor: fixed, paper, 0.047 mf± 10%, 400 v. Same as 2C1 73553
2R1 Resistor: fixed, composition, 100,000ohm ± 10%, 1/2 w 502410
2R2 Resistor: fixed, composition, 1800ohm ±5%, I/2 w 502218
2R3 Resistor: fixed, composition, 150,000ohm ± 10%, IA w 502415
2R4 Resistor: fixed, composition, 680,000ohm ± 10%, 1/2 w 502468
26
Symbol DescriptionStockNo.
2R5 Resistor: fixed, composition, 2700ohm ± 10%, 1/2 w 502227
2R6, 2R7 Resistor: fixed, composition, 120,000ohm -1.-5%, 1/2 w 502412
2RB, 2R9 Resistor: fixed, composition, 470,000ohm ± 5%, 1/2 w 502447
2R10 Resistor: fixed, composition, 390ohm ± 5%, 1/2 w 30498
2R11 Resistor: fixed, composition, 10,000ohm ± 10%, 1/2 w 502310
2R12 Resistor: fixed, composition, 18,000ohm ±; 5%, 1/2 w 502318
2XV1, Socket: tube, 9 contact miniature 2092842XV2,2XV3
MONITOR AMPLIFIER
3C1 Capacitor: fixed, paper, 0.047 mf± 10%, 400 v 73553
3C2 Capacitor: fixed, mica, 82 mmf± 10%, 500 v 39626
3C3, 3C4 Capacitor: fixed, paper, 0.047 mf±-10%, 400 v. Same as 3C1 73553
3C5 Capacitor: fixed, mica, 82 mmf=1=10%, 500 v. Same as 3C5 39626
3C6 Capacitor: electrolytic, 25 mf-10 +250%, 25 v 52518
3C7 Capacitor: electrolytic, 20 mf-10 +50%, 450 v 99149
3R1 Resistor: fixed, composition, 100,000ohm -±- 10%, 1/2 w 502410
3R2 Resistor: fixed, composition, 2200ohm ±5%, 1/2 w 502222
3R3 Resistor: fixed, composition, 220,000ohm ±10%, 1/2 w 502422
3R4 Resistor: fixed, composition, 1
megohm ± 10%, 1/2 w 5025103R5 Resistor: fixed, composition, 1500
ohm ± 10%, 1/2 w 5022153R6, 3R7 Resistor: fixed, composition, 39,000
ohm ±5%, 1/2 w 5023393R8, 3R9 Resistor: fixed, composition, 470,000
ohm ± 10%, 1/2 w 5024473R10, 3R11 Resistor: fixed, composition, 430
ohm ±5%, 2 w 5221433R12 Resistor: fixed, composition, 6800
ohm ± 10%, 1/2 w 5022683R13 Resistor: fixed, composition, 22,000
ohm ±5%, 1/2 w 5023223XV1 Socket: tube, 9 contact miniature 2092843XV2, Socket: tube, octal 207707
3XV3
FIXED PADS SAT15, SAT16
R1, R2 Resistor: fixed, composition, 270R3, R4 ohm ±5%, 1 w 512127
R5, R6 Resistor: fixed, composition, 18 ohm±5%, 1 w 59486
Board: circuit, etched, with 6
terminals 211018
Symbol DescriptionStockNo.
FIXED PADS 5AT17, SAT18RI, R2 Resistor: fixed, composition, 4700
ohm ±5%, 1 w 512247R3 Resistor: fixed, composition, 620
ohm ±5%, 1 w 59488Board: circuit, etched, with 6
terminals 211018
POWER SUPPLY4C1A, B, C Capacitor: electrolytic, 40/40/40
r4C2A, B, C mf -10 +50%, 450 v 2110224C3 Capacitor: fixed, paper, 0.47 mf
Jr 10%, 200 v 737874C4A, B, C Capacitor: electrolytic, 40/40/404C5A,B, C mf -10 +50%, 450 v. Same as
-4C6A, B, C 4C1A, B, C 2110224C7 XL4--t Capacitor: electrolytic, 10 mf
-10 +50%, 450 v 913914C8 Capacitor: electrolytic, 80 mf
-10 +50%, 450 v 2061084C9 Capacitor: electrolytic, 500 mf
-10 +250%, 50 v 996564C10 iam Capacitor: electrolytic, 10 mf
-10 +50%, 450 v. Same as 4C7 913914CR1 Rectifier: selenium 2110234R1A, B Resistor: tapped, wire wound,
100/3000 ohm ±10%, 7.6/5.4 w 2110244R2 Resistor fixed, wire wound, 750
ohm ± 10%, 10 w 2110254R3 Resistor: fixed, composition, 120,000
ohm ± 10%, 1 w 5124124R4 Resistor: fixed, composition, 18,000
ohm ± 10%, 1 w 5123184R5A,
B, C, DResistor: tapped, wire wound,
1000/600/600/600 ohm ± 10%,1.0/1.5/1.5/1.5 w 211026
4R6 Resistor: fixed, composition, 3900ohm ± 10%, 1 w 512239
4R7A, B Resistor: tapped, wire wound,10,000/1500 ohm ±10%, 6/4 w 211027
4R8 Resistor: fixed, composition, 120,000ohm ± 10%, 1 w. Same as 4R3 512412
4R9 Resistor: variable, composition, 500ohm 7.1-- 20%, 1/4 w 206037
4R 10 Resistor: fixed, composition, 10 ohm± 10%, 1 w 512010
4R11 Resistor: fixed, composition, 2200ohm ± 10%, 1 w 512222
4R12 Resistor: fixed, composition, 5600ohm ±10%, 1 w 512256
4R13 Resistor: fixed, composition, 12,000ohm ± 10%, 1 w 512312
4R14 Resistor: fixed, composition, 5600ohm ± 10%, 1 w. Same as 4R12 512256
4R15 Resistor: fixed, composition, 12,000ohm ± 10%, 1 w. Same as 4R13 512312
4T1 Transformer: power 2110284XV1 Socket: tube, octal 685904XV2 Socket: tube, 7 contact miniature 94925
Plate: mounting, electrolytic capaci-tor 18469
TWO -STUDIO SPEAKER AND WARNING LIGHT OPERATION
Sw
itch
Pos
ition
sS
peak
ers
War
ning
Lig
hts
CR
ST
AS
TB
AN
B
5S I
552
553
534
555
5S9
5510
5511
5512
5S13
5S I
85S
225S
2355
24C
RS
TA
ST
BA
NB
"C
HI
CH
2C
HI
CH
2C
HI
CH
2C
HI
CH
2
CH
1DUAL
CH
1C
H2
ON
ON
ON
ON
OF
FO
FF
OF
FO
FF
OF
FO
FF
OF
FO
FF
CR
CH
IC
H1
DUAL
CH
1O
FF
ON
ON
ON
ON
OF
FO
FF
OF
FO
FF
OF
FO
FF
OF
F
CR
CH
IC
H1
DUAL
CH
IO
FF
ON
ON
ON
ON
OF
FO
FF
OF
FO
FF
OF
FO
FF
OF
F
CR
CH
2C
H1
DUAL
CH
2O
FF
ON
ON
ON
OF
FON
OF
FO
FF
OF
FO
FF
OF
FO
FF
CR
CH
2C
HI.
DUAL
CH
2O
FF
ON
ON
ON
OF
FON
OF
FO
FF
OF
FO
FF
OF
FO
FF
STA
CH
2C
HI
DUAL
CH
2ON
ON
OF
FON
OF
FO
FF
OF
FON
OF
FO
FF
OF
FO
FF
STA
CH
2C
HI
DUAL
CH
2ON
OF
FON
ON
OF
FO
FF
OF
FON
OF
FO
FF
OF
FO
FF
STA
CH
IC
HI
DUAL
CH
1ON
OF
FON
ON
OFF
OFF
ON
OF
FO
FF
OF
FO
FF
OF
F
STA
CH
IC
H1
DUAL
CH1
ON
OF
FON
ON
OF
FO
FF
ON
OFF
OF
FO
FF
OF
FO
FF
ANB
CH
IC
H1
DUAL
CH
1ON
ON
ON
OF
F'O
FF
OF
FO
FF
OF
FO
FF
OF
FON
OF
F
ANB
CH
2C
H1
DUAL
CH
2ON
ON
ON
-OF
FO
FF
OF
FO
FF
OF
FO
FF
OF
FO
FF
ON
STA
CH
2C
HI
DUAL
CH
2ON
OF
FON
ON
OF
FO
FF
OF
FON
OF
FO
FF
OF
FO
FF
STA
CH
IC
HI
DUAL
CH
ION
OF
FON
ON
OF
FO
FF
ON
OF
FO
FF
OF
FO
FF
OF
F
STB
CH
IC
H1
DUAL
CH
IO
NO
NO
FF
ON
OF
FO
FF
OF
FO
FF
ON
OF
FO
FF
OF
F
STB
CH
2C
HI
DUAL
CH
2O
NO
NO
FF
ON
OF
FO
FF
OF
FO
FF
OF
FO
NO
FF
OF
F
STA
CH
2C
HI
DUAL
CH
2O
NO
FF
ON
ON
OF
FO
FF
OF
FO
NO
FF
OF
FO
FF
OF
F
STA
CH
I.C
HI
DUAL
CH
1ON
OF
FON
ON
OF
FO
FF
ON
OF
FO
FF
OF
FO
FF
FF
F
STB
CHI
CH
1DUAL
CH
ION
ON
OF
FON
OF
FO
FF
OF
FO
FF
ON
OF
FO
FF
OF
F
STB
CH
2C
HI
DUAL
CH
2ON
ON
OF
FON
OF
FO
FF
OF
FO
FF
OF
FON
OF
FO
FF
STA
CH
2C
H1
DUAL
CH
2ON
OF
FO
NON
OFF
OFF
OF
FON
OF
FO
FF
OF
FO
FF
STA
CH
IC
HI
DUAL
CH
1ON
OF
FON
ON
OF
FO
FF
ON
OF
FO
FF
OF
FO
FF
OF
F
STB
CH
IC
HI
DUAL
CH
ION
ON
OF
FON
OF
FO
FF
OF
FO
FF
ON
OF
FO
FF
OF
F
STB
CH
2C
HI
DUAL
CH
2ON
ON
OF
FON
OFF
OF
FO
FF
OF
FO
FF
ON
OF
FO
FF
STA
CH
2C
HI
DUAL
CH
2ON
OF
FON
ON
OFF
OF
FO
FF
ON
OF
FO
FF
OF
FO
FF
STA
CH
IC
H1
DUAL
CH
ION
OF
FO
NON
OF
FO
FF
ON
OF
FO
FF
OF
FO
FF
OF
F
STA
CH
IC
HI
SING
C11
2ON
OF
FON
ON
OF
FO
FF
ON
OF
FO
FF
OF
FO
FF
OF
F
STA
CH
1TBREM
SING
CH
2O
FF
OF
FO
FF
OF
FO
FF
OF
FO
NO
FF
OF
FO
FF
OF
FO
FF
STA
CH
1TBA
DUAL
CH
IO
FF
OF
FO
FF
ON
OF
FO
FF
ON
OF
FO
FF
OF
FO
FF
OF
F
STA
CH
I.TBA
CH
2C
H2
OF
FON
OF
FON
OF
FO
FF
OF
FO
FF
OF
FO
FF
OF
FO
FF
STB
CH
2TBB
CH
2O
FF
OF
FO
FF
ON
OF
FO
FF
OF
FO
FF
OF
FON
OF
FO
FF
STB
CH
2TBB
CH
IC
HI
OF
FO
FF
ON
OF
FO
NON
OF
FO
FF
OF
FO
FF
OF
FO
FF
29-30
sT.A21
MIXER 5AT2PRE AMP 5883
11
553 10
5 T. A 3 0-0%ER 5AT 3
ST. 54130-0 - PRE AMP SARA
5 T 4554 .
15 15Ctfd
MIXER 5AT4
SPRE AMP 5AR5T. 55 °--('-I17 ST 5
555 > 5513
19o t L- -
c R
ST Al
3i
---o--1
5ANN. B. 0--o-i5 5T2
13_01 1'150E1411
R AMP 5ARI
r --
L_MIXER 5AT1
_PRE AMP 5AR2
ST B3 0-0-- 573
ST. 84
ST ASMIXER 5AT5
CUE
21 PRE AMP SARE---1W E I 0-0 576 /- :--- --I
Fi _NA i 0 C. 0Ik 1>_414> ,I23 I SSE
isonlic i I IPT T I .>' .T -b- - -I- MIXER : A
571
!sort It5SI
IA
-tO 0559
5510
5511
CAP BOOS5A 1
E:It>L
cu 1 908 WASTER 5ATii
5512-0 -
TAPE 2 517v 557 )1r..
FILM 2
T T2
33NET 0
NETPHONE
43v1 5OV
441 o
39lAl 3
o 202 it
In
4 °2
5ATI 5
PRE AMP 5ARI
Ion 57
Joon 600(11-0 4. MIXER5J I
5ATIS
600RI6001)49 3008
45Y
CUE
SINGLE -DUAL CH.
CO5522
CAW BOOSTER AMP5ARIO
ChiTrISJII-MASTO-5A T 10
T BA
- TB 63Ht TER
CHI
CH2
CUE I
CUESt-t-I5.0-4 CUE 3
5
5Pa
5 515
PRE AM' SARK
5516
SATE
PRE AMP 5AR9519
MIXER 5AT9
NoOFF
5SeREMOTE INPUT SEL.
5517
MASTERSAT1 4
518PG M. MON.INPUT SEL.
PGNI TB MON 13005TER SARI25114 r
CH2p344. AMP>5A RI4
PGm -TB MONITOR GAIN5AT12
5181
OU CHI
nev 10D8
lf:.'60011
5M2
CH2 ©U
IODB \',^
5T10
6 DB
60011
170GRAM 8 TerMO TOR -AM-P6
GItl
REM.I0
ALL.
Ft1P2 0GEC
IIEGOUE
3-o -30
2O --oOFF
5520REMOTE CUE CH 21 CalI
PHONE SEL.
4C
ICH2
5519CUE FEEDMON. SEL.
OFF
CUE FEED5713MONITOR AMP.
A5 AT 13
6 DBA of
5712
87
58717600
'MI 5523 6000OLINE I OUTHCH2 LINE 1 OUT 73
D7 7q4X.Ti. MON.
300E1
CHI600115524 OLINE 2 OUT
CH.2 LINE 2 OUT 7
60011 mc 2
79w eixT MON.EAT 183003
81
8
600_0_
5K
5K2
O
.1.
:OPTIONAL)
15floCRCUESPAR.
60
MON.
g.s1g
91
MAWR. SF <8
MON.li 05526
4T A SPAR.4 93
CUEMON
r95270ST B SPAR.
CUE
MON.
5528o 97oANN.B SPAR.
OVERRIDEO PHONE
O
REMOTE 5521TALK BACK
REMOTE CUE
W120 DB
MON. PHONE5J2
133691
CUE
RELAYS
ODD NUMBER EVEN NUMBERAMPLIFIERSAMPLIFIERS
O
100-130v50-60,s.
5F 2
POWERON -OFF5529
Figure 22 Block Diagram
31-32
2
101+24V REM
TB
5618C 3 2
ST.A 5518ATe %
41--
4 % eI
STB8135518 -
7 6o 0 O
-0-
5522,30
I
24210
U. 250
1283
-Jeu
n -r, 0.13
of 15°1 :6,
4
2o°552
22,0
124°5
26.rt° 270
28,
II Y
a3 1 :9°
t 1 19C;
1 I 20
553 2.e.1220
4 FZ4591.- 260 -,t)
1 280
0 01 180
90I 12005S 4 2;
I I22023
1 244 2,F 1260N 22
28
r -i7°, -13
'29,5S521
:7;24
IQ 25
220_.280
IT
t5523 5
22
:8°N. 29*I 30.0 3 is'
324
114
2?SKI
4
8
13
I 14
5510 Is16
r'I 1Z'
I°0t1 120
130I14
55H Isoq,IT
lea
21 0o-31,
91 1o"
et L:12139.
1 140
5512 ,5
I 1,r:
I 19:1 I 200-
rh-Nit
1
12
:3
S13
1160
)04
:20
t 1 F23:
.,°4 I 1 2%5524 25
26
.7
-0-5
1401D
te,
0(0
1.14
- 12- 22- 13
19- 5- 21 -4
8
102a
820
I bkTERMPIALS
ON 5T131I 92 91 105 106
0
15 V.
6 0,,AC
107 10B
I
2
119 1200
CHIOR
AUDITION
CONTROL ROOM
CH 2OR
PROGRAM
-o
ANNOUNCBOOTH
Miti1748 SPEAKER RELAY KIT
4 °5
CH 2OR
PROGRAM
-0-
CHIOR
AUDITION
5K2ST. A
2
54
3
9
CHI 1OR
AUDITION
5 K 3
ST.13
20
9
4
9 1130 114 1150 1160
6
-0- 23
0 14
6
*-0- 20-0- 917
*0-- 24
CONSOLETTE
-A
CH 2OR
PROGRAM
-O
U
CHIO
AUDITION
r -oI-117026-0-, WARNINGt- LIGHT-0 RELAYS
EXTERNAL
CH0
PROG AM
414---MI-11706 SERIESWARNING LIGHTS
133806-0
NOTE: STRAPPING ON 5782 SHOWN FOR TWO STUDIOOPERATION.FOR SINGLE STUDIO OPERAT1ON;THE FOLLOWINGTERMINALS ON 5762 ARE CONNECTED;8-9, 12-19,13-20,14-1 5,16-17,21-22 823-24.
Figure 23-Control Circuits
VIC
O35
1
2 ST
. Al
M
552
AN
B
ST
A2
SR
215
0
M 1
C.1
HO
5T. A
12
150 51
1C.4
554
150
5T. A
4.
6
ISO
170 57
.85
IN
555
190 5T
.A5
200 56
515
0
TA
PE
I
22 23 24F
1.1_
I IM
MO Witt
25 TT
26 27T
AP
E 2
a PIL
612
30 NE
T
422
557
TA
PE
2
FIL
M
SA
TIN
30 D
B
270
270
f50N
C4]00
660
v
009
...0
270
270
5C
RE
M.
INP
UT
SE
LEC
TS
W.
OF
FLI
NE
1LI
NE
2LI
NE
3LI
NE
4LI
NE
5
356r
231
LW
OLI
NE
8390
ri4Z
LIN
E4
LIN
E 5
O
270
270
SA
TIN
30D
B
5AT
610
0K1,
1106
5077
100K
MIX
7
7 8
,50R
091,
TA
O,-
CH
I 800
5
1,1,
1cm
-H
ALT
ER 55
228
SIN
ULE
-DU
AL
IAC
HA
7 'r
TH
OW
N IN
CC
Elg
iNO
LE1P
OE
ITIO
N5P
131
SP
OO
ER
AM
P.
5229
VII
I EIH
MIL
.I
I II
I
1111
111
T,II
IIN
N11
1111
.--- ., ..
-11
:111
111
....
......
..1-0
115
351.
-iff
amm
-:
11M
IMIII
NIM
, 1iu
mia
a-=
-. :
-nre
m1
. .- .
Imm
ier.
9111
1-11
. iI.
50E
14m
AS
TE
RG
AIN
CH
AN
NE
L I
P.
250
5234
5600 59
.
DA
ME
55E
.65
5245
27K
5%
5M,
Vu
4170
6990
5247
560
2000
.352
49
559.
6
5513
'
A
I.O
wl
1":0
)111
1111
111
WA
YN
PR
IM ll
lll 1
111
1111
11.1
ST
1
PR
EA
MP
LIF
IER
S
035
5421
706
k19,
11
5426
.
70
t06
011
08 0
7 06
5282
ST
RA
PP
ED
FO
RS
ING
LE S
TU
DIO
OP
ER
AT
ION
2 2-
22
2IT
162
13-1
211
0 0
0-0
0-0
265
2922
22 2
120
18
5515
5520
4,7
211
RE
MO
TE
CU
E-?
APHONE
3
2,.
OF
CN
AN
1O
FF
CH
AN
2LI
NE
1LI
NE
2LI
NE
3LI
NE
LIN
E S
50T
12
Z. M
AS
TE
R
P56
1 -1
191.
30N
BO
OS
TE
R
CU
E F
EE
D M
ON
ITO
RIN
PU
T S
ELE
CT
OR
OP
PP
O%
CU
E F
ELD
MO
N ..
.AIN
--:7
0706
5P51-
100
-120
V 5
0/60
01 2
00E
ALL
RE
SIS
TO
RS
AR
E IN
OH
MS
',12
.W, 1
07.1
5A
LL C
AP
AC
ITO
RS
IN M
ICR
O F
AR
AD
S U
NLE
SS
OT
HE
RW
ISE
SP
EC
IFIE
D.
If N
OT
OT
HE
RW
ISE
0[5
16N
KT
ED
:
NU
MB
ER
ED
SQUARES
IND
ICA
TE
TE
RM
INA
LS O
N 5
1,11
.LIMBERED
CIR
CLE
T IN
DIC
AT
E T
ER
MIN
ALS
055
1152
,
RO
TA
RY
SW
ITC
HE
S A
RE
571
005
IN m
AX
.C.C
.P05
1710
N.
9; D
EC
K 1
5 N
EA
RE
ST
PA
NE
L.
CO
NS
OLE
TT
E 1
5 W
IRE
D A
T F
AC
TO
R-,
WIT
H 1
5712
.S
TR
AP
PE
D A
S S
HO
WN
IN M
AIN
SC
HE
MA
TIC
FO
R T
WO
ST
UD
IO
OP
ER
AT
ION
.FY
IT
O P
ER
MIT
7A
LKIS
AC
K 7
0 E
TU
DID
S W
ITH
OU
TP
UT
LIN
E S
NIT
CH
ES
IP
OS
ITIC
E.1
, .1.
ITIP
LIY
TE
RM
INA
LS S
-20
AN
D 6
-7 O
N s
RE
MO
, t1/
R49
IF A
CO
N0F
r 1
RN
CU
L 51
1 A
KLK
15 C
ON
NE
CT
ED
TO
TE
RM
INA
LS K
U 9
0.
1661
B. m
oN55
12
R16
CU
E F
E
2 H
P/ C
2
MO
N.
5T11
100
562
418
4700
55
A0
1500
510
ix
2008
3073
AG
Ogg
025
53 5
455
56
5 N
EC
UE
,C
UE
2C
UE
D
RE
L., E
D S
CH
EM
AT
ICS
CO
MP
ON
EN
TN
AM
ES
YM
BO
LD
WG
, RE
F.
PR
E F
IRP
RE
-Am
PU
F1
R5
SA
RI T
OS
AIR
9IN
CL
476
069
1
BO
OS
TE
R A
A5A
RIO
T05
AR
I2 IN
C.
476
967
LUT
,.',IT
'U'R
''S
'AR
2'1'
5:5'
4A2'
1'64
'7'5
: 1P
OW
ER
SU
PY
511.
5111
5115
261
6 09
84
5%2
57A 5R
67
Sr,
5271
4700 'fi
a
Wg C
H1
CR
2 A
t513
3.LI
NE
10 73 78 76
IH
80 05 106 07,
110
112
C1
TB
116
AN CH
I
SP
EA
KE
RS
089
CR
CU
E09
0
5925
91
-11,
3" M
Oz
-'CU
E 5526 MON
095
,Ai;g
V°
MO
N P
HO
NE
5J.
57.0 09
4
EI 9
5
5TB
Ei 9
6
Ii
5T86
56E6
5183
5787
5Z9 90:
--554 It:
260-_!67.359-7...270---612 55247-,
26,-661559-21-.
532-1
290201
5,52-4 .714 572
.4351312-4
.340- 476:16
.-440162.
-696-5392-5..
63 591-5,663 -
7 as 402,551-22-.r 5.3510 S.-
374-551044..4904592439'457017.
24 435-551045,551.551-25,52i-5510-7
-635-557-27260 -566- 551041,
jimitt.-'_.:17,-4-77.9 14r 93.13052...5"...13-9762-4-0,, 84 65
5F555-
I
202203.
15-656- 4-"''7
&AT*ND 6
1 -5363
696-5063- 5
-93-552-13-3 662-5311.19-
536 55245'704-5511-904-5511'.9..
373- 3511:15.-
460 -5.311-14.
-435-15117-492- 551911.
531- 33425.526 5511-7,54- 954 27,
.2110---5110-551157.
r"'"
-3 4 .
:11a a 3;...t" 3 ;
YA6399
01313-5
.vr3,-936D
WWI13 17 2_1 3 V 41 45
z7770'?,,y/TITc7f1.974IsifirlINI"-07L?r!itiiiu'0§,ildittifilliiit;'?-Q,iittlalliii0i0t10
--750 737 712 4. -Visa Lis 9:7 Ise v 1160 76, -71: T-47 5 744 N5 V756 Na 7611 794 770 771
262.9,--36541134-2
252-606
5893roR
4616
5P.51I. Cl1- 4C6
_
1499 54%241,,
riot ,1.452ova ucelij4..262 -241962
240-1061.15369-6
i` "1.t.. I
Mi-6N.._,/
1 02 'Li itil .11-4756711-2 4C4
1616 .e., -,N, .o o 1.471 : 0 00 0 0 0
% .' ,./ c. '. /454-3811.10--- "
..,
era396
0 0576i-1 114470".16 4"^\ f\ '
.4 -,. _.
9-5341204205
-0.5544-6
39-355No 663 N154
554-1551135-65114
-9p-1571-.105406-5512.1
9-551.440-555
3.!. R -555-I
206i 207
.53.47.7
CH-i BUS
5=5 ''`,., 6951:11:1'3-
15 -I 564-35431 349. 5139
' 576-55191
51':
3631 -s*,,754.14 f
A:52
,131
22 1S5
-9519
e
I- a ...;: iii343._ .6.. .; b6SST' ' "S31-.555321'5111
.5 -, .07 -636-568366556"
250-562.5319-21.,
536 557
576.6 -4312
3,36
533-3361266226--51
774 775 776
571 11071-5
..Ne.3457
0.-3110450-79.9.
276.3671:0-5744-651.27CD-ArOL6264256521.
05445.359.5- W... -;....70V520-60
'-'549-5511593-/ 023016 024
*ND]
7/ _Ili 69 63 9766 69Q721
7 ' 14 ,et t3TY
3.:tali 111 I g 2 .777I _9 I 30.
,I33 3 § Ina
SEE NOTE76 SEE NOTE]
454-6395.-334090 a`5163-6065
6911-53145,.
70272 3-131 I..- 669
.al, -7 .I
, IS MAN
ill.,.7-656643.
II 455-55116-7
8 3 're' 3 no - 7.5156:. 35: 55163 -::7:::
=506-151464-:mc Oft -555-27-,
617-65..waz-
--330-131)
'464 71,699 - 3366-5
3-11411645 -11
.4744.57024696
6R
-559- 3782-04
465 5782 40
La 612- 61131107r3 106! 5325-36-'
to5 3#11.5.:71,2 3 53250..*22<- trel
52-0901
5155
576-6
3 0"1.211-612,6 2
70051;111-7-9 -.
area
gtR 900
E:
2 .1,
f! 1'13! It
5,3-25960
4916
154
7 - %it 1
2 I T1.174/74f.i0ar "5
167 I II Rritttlf,
-4 cur.._ _122. J
2399 5 3356;2,4,!7,,,,
211L22;4,17,.t...2-4711/r-s i891-1...-,
.
2-40 2-496
as --6 V
OP 402 0: ,:_i711_,.,,"\--77.6; :::' .:a: si41.:"55..e-,;;* 2- 4691 ,3 Win we.E., ,,,,,,, ...7h ir* ,.-3111660-6 '6,45, V1.r:IittZftio -
316 -57 2-4
6 01
0 ; oen:
--6511-3099-2322-eato 6
879-..-6569-5
ye Hare;
5521467 -55200-9
rtit -49141t? ---
i4C.-13 -g I * 971- tit=tiirrM712C.5c-5 . . & it . ag P42 --s :°,::-r.Nr:-..._....,....,,,=2-* 1 02-.L. 364 -518 1-2
6137 '5 015-9
SEE NOTE)
59511
.0 5520.:
112.Mr8,17-46 IMEntnnga -4A®WI . , , . °MR 0910,3' MUNN REMMIOMNI1;51=a00 - . 0 e . i MIliCEINOIN KIM0:. CELT=
1.11.1=151111111ii7.177151117.
bon a. 41,..5,117111111L,V-41,MImElliiiiii171111,14.1.1ZEMIEll III .PHINNINLI
. .1 .0 94,17211ElaWRIIImikaimMk=
FA:11211MIN IiitIMMI:XIIIIIIIIIIIIIMIZiliznillii/MilliMMIIIMIL.4..7..1.-r4,12FrIMINI
______LIEDISIEMm=Mill - .. .
ii=liiiiiiMt 11MC
K -.t_Mif it4fi1.112.137TrIF9'7-118=
11115177=-19,47-1.71ETTL MINI VnII:FM1=1*-111[am= wdgm
wynimrtli= - _ . WPM KUMEnIEF2. VAINE =MI - . . MNMIMI= IIILK!.111111-', XCE,IIM MI 11 NMI M=111MI=t ,4 zfrrimmiCTSSSiliibllli7. f, IZI-T47 go.
,3.mmtim11111111111=8. . Milff..IENT-WI IIMINalmil
MIMIliMMAS --M1NMI= sssssi
Mir --.7LV MIMI= /, . ION INNS MELIMIir. IMV-FM=ir 17 -Vila
TEL/ -OMBm ENENM MEM fiqm
ultimo11.11-1 ,I.' 1:11F=In 1, 14161IIi4, Nar_t_rir
swan6866I" 1=L7.11111. MAC=
in OX.1151,111111011M IMM111111114.11151.14INM
MN=MI
NMMENNE
lErS,MBMW
t, 1581,1MIMMQ,1:11581VD11111 MN 17I1: ,I=ITIMEr. M11-716.M.M.,,3161.11.1Li-1,7;1.11116
MiZILLia.M11,1.EMa.-IDIN 517cr7akvir_T--a
Kumwrxmi j:I763. FM1.1.4.0--W'MAMILMIlin RUIZZE MEM
l A7 .II:k1MIE.a1111.117174[4r2ol .. 4 AMMON COMEIIIIELM21- 1:2q2[225 FkifILM NUL=V' l',3=F:L i'.til KO= P11:15.1.1 fl1FFISMMTV
rOtt LIST OP PARTS FOR ABOVE WIRE TABLE SECD90-8911333- 501.
440TCS
' 1- SOLDER ALL ELECTRICAL CONNECTIONS 43996 172744137 2 -CABLE &THEN LACE WIRES WHERE NECESSARY
1131NO LACING CORD iTEm1483 SOLDER ALL THE ENDS OF TIC SHIELDS CF TIE
SHIELDED CABLES ON 97211 TO GROUND EL/S.sOND 2,4 -TWIST IN PAIRS THE FOLLOWINO WIRES
270 271 272 275 274 273 276 833 345 306 567 366 366260, 281, 262,283, 284 216,266, 547j 392,393, 594,395 096,367 366 369 570 473 499 500 560 573 601 617 649397, 396 399 s 400, 639, 6 I5,600, E46, 564 ,624,671,665
ALSO, TWi ST THE FOLLOWINO240 241260 260262 9 264 .
5. TAPE SHIELDED CAIN..? wtiERE VECESSART.TO PREVENT 311ORTS.U3E ITEN3140
6 - iL ACE ONE PIECE OF 111.0114 ON EACH ENDOF 17E142144 EXCEPT THOSE ENDS WIRED TOTER61.130RD 51131
7- PLACE ONE RIECE OF /71614 I 5 ON EACH ENDOr 17E613145 EXCEPT THOSE ENDS WIRED TOTERM. BOARD 1.7131.
360063-I
Floor. 25 -Overall Connections