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SUBWOOFER / SATELLITES
Gemini Sound Products Corp.120 Clover Place P.O. Box 6928
Edison, NJ 08818-6928732-738-9003 (Phone) • 732-738-9006 (Fax)
CONTENT’S:
Cautions, Connections, & Operations :....................................Page 2-4
Specifications:..............................................................................Page 4
Parts Lists:....................................................................................Page 5
PCBs:..........................................................................................Page 6-8
Schematics....................................................................................Page 9
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INTRODUCTION:Congratulations on your purchase of an XTR-400 speaker systemengineered & manufactured by Gemini Sound Products. This state of theart speaker system is backed up by a three-year warranty. The XTR-400offers ultimate fidelity, power handling, and an array of features that makesit a highly versatile, compact, self contained & powered speaker system.
FEATURES:• Active self-powered 400W rms tri-amp design.• One 15-inch bandpass subwoofer. Features top-hat hardware for pole mounting of a
satellite speaker and metal corner protectors.• Two high quality satellite speakers featuring 10-inch woofers and dual piezo horns housed in
trapezoidal cabinets. Satellite speakers are uniquely designed for placement on stands or for useas floor monitors, and protected by full front metal grill and metal corners.
• Built-in active optimized crossovers.• Sensitivity/Volume controls.• Satellites equipped with reliable Speakon™ connectors for exceptional sound.
(cables must be purchased separately)• Signal Ground Lift Switch for achieving the quietest possible hum-free operation.• Airflow controlled by variable speed fan for maximum cooling and quietest possible operation.• Mono or Stereo operation.• AC line voltage selector switch allows reconfiguring amplifier for either 110-120V or 220-
240V AC lines.• Compact design featuring large metal handles and casters for ease in transporting.
CAUTIONS:1. All operating instructions should be read before using this equipment.
2. To reduce the risk of electrical shock, do not open the unit. There are,NO USER REPLACEABLE PARTS INSIDE. Please refer servicing to aqualified Gemini Sound Products service technician.
In the USA: If you experience problems with this unit, please call 1 (732) 738-9003 forGemini Customer Service. Do not attempt to return this equipment to your dealer.
3. Do not expose this unit to direct sunlight or to a heat source such as aradiator or stove.
4. This unit should be cleaned only with a damp cloth. Avoid solvents orother cleaning detergents.
5. When moving this equipment, it should be placed in its original cartonand packaging. This will reduce the risk of damage during transit.
6. DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.
7. DO NOT USE ANY SPRAY CLEANER OR LUBRICANT ON ANYCONTROLS OR SWITCHES.
CONNECTIONS:INPUT SECTION:There are two parallel input connectors (one female XLR and one 1/4” jack) perchannel. Either can be used as an input or as a link to chain amplifiers.
XLR INPUT JACKS: XLR INPUT JACKS (1) electronically balancedinputs accept a standard XLR male connector. Pin 1 = shield/ground, pin2 = hot or positive (+) and pin 3 = cold or negative (-).
1/4" PHONO INPUT JACKS: 1/4" PHONO INPUT JACKS (2) accept abalanced as well as an unbalanced line. The unbalanced line uses astandard tip-sleeve connection. The tip is positive and the sleeve isnegative/ground. The balanced line uses a tip-ring-sleeve connection.Tip = hot or positive (+), ring = cold or negative (-), and sleeve = shield/ground.
SENSITIVITY/VOLUME CONTROLS: SENSITIVITY/VOLUME CONTROLS(10) control the input levels for each channel of the 2 satellite speakers.The volume level of the subwoofer is controlled automatically to match thevolume levels of the satellite speakers. It will always maintain a perfectbalance to give you incredible sound quality!
SIGNAL GROUND LIFT SWITCH: SIGNAL GROUND LIFT SWITCH (7)is used to lift the balanced input connectors’ ground/shield from theamplifier’s ground. When the signal ground lifted, the sound sourcedisconnects from the amplifier’s ground preventing ground loops whichcan generate hum and noise. See the Signal Ground Lift SwitchInstructions for more detail.
OUTPUT SECTION:Disconnect unit from the AC power source before making any connections.
SPEAKER OUTPUTS (3): The speaker output connectors are Speakon™connectors that will accept cables with Speakon™ connectors. (Thesecables must be purchased separately) The subwoofer is already connectedinternally, so you don’t have to worry about connecting it to the amplifier.
AC POWER SECTION:POWER SWITCH (8): turns the unit on and off.
POWER LED (9): the power LED lights when the power is on.
FUSE (4): replace with proper type and rating.
AC INLET (6) is used to attach the power cord to the unit.
AC LINE VOLTAGE SELECTOR SWITCH (5) allows reconfiguringamplifier for either 110-120V or 220-240V AC lines.
OPERATION:STEREO OPERATION:The unit has two channels for stereo operation. Each channel provides aseparate signal at the speaker outputs. The following instructions arefor use with 8W speakers of matched power ratings. We suggest onlyusing the speakers that come with the unit.
1. With the power OFF, connect your input cables from your music source(such as your mixer) to the Channel 1 and Channel 2 INPUTS using theXLR INPUT JACKS (1) or 1/4" PHONO INPUT JACKS (2).
2. Connect your speakers to the Channel 1 and Channel 2 SPEAKEROUTPUTS (3).
3. With the SENSITIVITY/VOLUME CONTROLS (10) of both channelsset to zero (fully counter clockwise), turn the POWER SWITCH (8), ON.Okay, now try playing some music and/or talking into your microphone,and set the level of your input as high as you think you’ll need it. This wayit will be as high above the amplifier’s noise floor as possible so you’ll getthe best possible sound with the least amount of noise. Now play somemusic and listen for audible distortion. If you do hear distortion decreasethe output level using the SENSITIVITY/VOLUME CONTROLS (10).
MONO OPERATION:Connect your MONO signal to the Channel 1 input (1 or 2). Now create alink by connecting the remaining Channel 1 input to a Channel 2 input(1 or 2) using a standard balanced cable (may be purchased separately).You can adjust the level of each satellite speaker using it’s channel’sSENSITIVITY/VOLUME CONTROL (10).
USING THE SIGNAL GROUND LIFT SWITCH:Depending on how your sound system is hooked up, sometimes applyingthe ground will create a quieter signal path. Sometimes lifting the groundcan eliminate ground loops and that annoying hum to give you quieter andcleaner overall sound.
1. With the power amp ON, listen to the system in idle mode (no music orsignal) with the ground ON. The SIGNAL GROUND LIFT SWITCH (7) willbe in the left position.
2. Turn the power OFF before moving the SIGNAL GROUND LIFT SWITCH (7).Now lift the ground by moving the SIGNAL GROUND LIFT SWITCH (7)to the right. Turn the power back ON and listen to determine which positionmakes the overall sound quieter with the least amount of noise and hum.
CAUTION: DO NOT DISCONNECT THE AC GROUND ON THE POWER AMPLIFIER IN ANY WAY.THIS CAN BE VERY HAZARDOUS!!
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SETUP:There are various ways to set up this system:
BASIC SETUP:Okay, this is your basic setup, perfect for small parties and venues. Theideal location for your subwoofer is close to a wall or in a corner. Thiswill give you the fullest bass response. Your 2 satellite speakers can beplaced up on stands on each side (stands must be purchased separately).
TWO-SYSTEM SETUP:This setup is perfect for larger venues. This setup requires 2 XTR-400systems. This will give you a total of 800 watts rms! Place a subwooferon each side to the left and right. Using the high-hat hardware andconnecting pole (which can be purchased separately), place thepole in the high-hat socket on the subwoofer, and a satellite speaker ontop of the pole. The 2 remaining satellite speakers may be used as eitherfloor monitors, or placed on stands elsewhere in the room giving you alouder and fuller sound.
Each speaker system in this setup must be used in MONO mode (seeMono section). Connect the system that is on the left side of the audienceto the LEFT channel of your mixer, and the system that is on the right sideof the audience to the RIGHT channel of your mixer.
ACTIVE SPEAKER SYSTEM SUBWOOFER/SATELLITESThe XTR-400 features a unique design for ease in transporting. The 2satellite speakers conveniently fit into a special recessed section of thesubwoofer and are securely fastened using a strap that attaches to thehandles (included).
SHOULD YOU EXPERIENCE ANY DIFFICULTIES OR PROBLEMS,PLEASE CALL: 1 (732) 738-9003 FOR GEMINI CUSTOMER SERVICE.
SPECIFICATIONS:Subwoofer XTR-400SUB:
Amplifier’s Output Power:.........................230 Wrms on subwoofer channelFrequency response:……………………...........................….32 Hz - 100 HzComponents:………………………...........................……………..15" wooferFeatures:
Efficient band-pass cabinet designLarge metal handlesMetal protection cornersFour 2" wheelsAmplifier assembly on the back35mm standmount cap on topBlack carpet finishRubber feet
Dimensions:..............................................................WxDxH: 20"x31"x24.5" (508 x 788 x 622 mm)
Weight:…………………............................……………………..96 lbs (44 kg)Satellites GT-1002s:
Amplifier’s Output Power:..........................2x85 Wrms on satellite channelsFrequency response:…………............................………….100 Hz – 20 kHzComponents:….…………...........................……………………….10" woofer
6” dual piezo hornFeatures:
Trapezoidal cabinetFull front protective metal grillMetal protection corners35 mm standmount cup on the bottomBlack carpet finishRubber feetNeutrik Speakon connector
Dimensions:……….……..............................…….W x D x H 12.5" x 9" x 18" (318 x 229 x 458 mm)
Weight:……………………...........................………………18 lbs (8 kg) eachTotal System:
Maximum SPL, continuous:……...........................……………………120 dBSensitivity………………………...........................……………………. 1 VrmsInput Impedance………...............10 kOhm unbalanced/20 kOhm balancedFeatures:
Balanced XLR and 1/4" Jack inputsNeutrik Speakons on Satellite Channels’ outputsActive electronic X-over (Fx=100 Hz)Variable speed fanIndividual channel Sensitivity/Volume controlsSignal Ground lift switch110-120 VAC / 220-240 VAC switchable
Total Weight:……………............…...............………………...132 lbs (60 kg)SPECIFICATIONS AND DESIGN ARE SUBJECT TO CHANGE WITHOUT
NOTICE FOR PURPOSE OF IMPROVEMENT.
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Item # Designators Description Part Number
MAIN PCB:1 ZD3, ZD2 ZENER DIODE 1/2W 12V (RD12EB2) 079-0122 D3, D1, D2 SILICON DIODE 1N4148 079-0033 ZD1 ZENER DIODE 1/2W 24V (RD24EB2) 079-0204 Q1 SILICON TRANSISTORS 2SC1815 076-0035 Q2 SILICON TRANSISTOR 2SC4793 076-1006 C18, C13 ELECTROLYTIC CAPACITORS 6800µµµµµ/50V 050-1987 REC1 BRIDGE RECTIFIER KBPC804W 086-0198 U3, U2, U4, U1 INTEGRATED CIRCUIT TDA7294V 074-189
CROSSOVER PCB:1 VR1, VR2 ROTARY VR 10KA L:15MM 071-2282 LD1 LED (GREEN) 5φφφφφ 080-0863 IC1, IC3, IC2 INTEGRATED CIRCUIT NJM4558DD (BA15218,M5218AP) 074-163
INPUT PCB:1 SW1 SLIDE SWITCH SV70050 081-0302 IC1 INTEGRATED CIRCUIT NJM4558DD (BA15218,M5218AP) 074-1633 X3, X2 PHONE JACK 6.3φφφφφTRS 1/4" BAL 092-0784 XLR2, XLR1 XLR XLF-3PH 092-069
OUTPUT PCB:1 X1, X2 SPEAKON™ CONNECTORS NL4MP 092-149
OTHER:1 AC CORD 093-3692 AC INLET 092-1053 DC FAN 24V 001-6134 TRANSFORMER 059-2475 SLIDE SWITCH 081-0236 POWER SWITCH 083-1217 FUSE VBS UTE 3.15A 250V 100-0688 FUSE VBS UTE 6.3A 250V 100-071
PARTS LIST:
In the USA: If you should experience problems with this unit,please call 1 (732) 738-9003 for Gemini Customer Service.
Do not attempt to return this equipment to your dealer.
XTR400-3XTR400-4
SW1
X1
C1
R1
R2
R3
R4
R6
R7
R8
R9
C2
C3
C4
C5
R5
IC1
X2
X3
XLR1
XLR2 G
++
OUTPUT PCB
INPUT PCB
Page 6
XTR400-1
XTR400-2
RED
RED
/BLK
BLK
RED
BLK
BLK BLK
RED
RED
C8
R5
LD1
J1
C7
C6
C4
C3
C2
C12
C5
C11
C1
C10
C9
IC2
IC3
R11
R20
R9
R6
R14
R15
R21
R2
R8
R19
R12
R13
R10
R3R4
R18
R1
R7
R22
R17
R16
X2
X4
X3
X1
IC1
J2
J3
C13
C14
VR2
VR1
C21
X2
X6X5
X11
X10
X7
X8
X1
X13
Q2
1 R2
X4
C13
R5
C12
AC
AC
+
-
REC1
X9J6
R12
R6
J5J8
R34
J1
J2
J9
J10
J7
ZD1
ZD
2
ZD3
X12
X3
151
U1
115
U4
R37
R3
R36
R10
R7
R28
R29
R1
R24
R33
R19
R20
R16
R15R30
R8
R21
R22
R18
R17
R35
R23
R9
R31
R26
R11
R38R2
7
R32
R14
R25
R4
Q1
L4
L1L3
L2
D2
D1 D3
C19
C5
C3
C29
C1
C23C2
C22
C4
C31
C26
C11
C17
C16
C15
C14
C20
C8
C30
C27C7
C28
C6
C25
C9
C24
C10
J3 J4
115
U2
R13
115
U3
C18
C32
TOP LAYER X-OVERMAIN PCB
XTR400-1
XTR400-2
RED
RED
/BLK
BLK
RED
BLK
BLK BLK
RED
RED
C8
R5
LD1
J1
C7
C6
C4
C3
C2
C12
C5
C11
C1
C10
C9
IC2
IC3
R11
R20
R9
R6
R14
R15
R21
R2
R8
R19
R12
R13
R10
R3R4
R18
R1
R7
R22
R17
R16
X2
X4
X3
X1
IC1
J2
J3
C13
C14
VR2
VR1C21
X2
X6X5
X11
X10
X7
X8
X1
X13
Q2
1 R2
X4
C13
R5
C12
AC
AC
+
-
REC1
X9J6
R12
R6
J5J8
R34
J1
J2
J9
J10
J7
ZD1
ZD
2
ZD3
X12
X3
151
U1
115
U4
R37
R3
R36
R10
R7
R28
R29
R1
R24
R33
R19
R20
R16
R15R30
R8
R21
R22
R18
R17
R35
R23
R9
R31
R26
R11
R38R2
7
R32
R14
R25
R4
Q1
L4
L1L3
L2
D2
D1 D3
C19
C5
C3
C29
C1
C23C2
C22
C4
C31
C26
C11
C17
C16
C15
C14
C20
C8
C30
C27C7
C28
C6
C25
C9
C24
C10
J3 J4
115
U2
R13
115
U3
C18
C32
BOTTOM LAYER X-OVERMAIN PCB
T1SW3
SW4
C101
6.3A / 110-120V
WHT
BLK
ORG
BLU
BRN
F
SW-POWER
VOLTAGE SELECTOR
L
E
N
F
AC INLET
P2
P3
P1
POWER PCB
230v115vFAN124Vdc/0.19A
C2270
R3 10K 1%
R4 10K 1%R710K 1%
R9 10K 1%
C4 270
CH.2 (R)
TRS
X3 TRS 1/4" BAL
21
3
XLR2XLF-3PH
C3270
R1 10K 1%
R210K 1%
R8 10K 1%
C5 270
TRS
X2 TRS 1/4" BAL
21
3
XLR1XLF-3PH
CH.1 (L)
6
57
IC1BNJM4558DD
2
31
48
IC1ANJM4558DD
R6 10K 1%
+ 12V
- 12V
25
1
4
3
6SW1
C1 0.047uF
"Signal ground lift"
R5 510
+ 12V
- 12V
INPUT
INPUT
CH.1 (L) OUTPUT
CH.2 (R) OUTPUT
INPUT PCB
2
31
48
IC1ANJM4558DD
6
57
IC1BNJM4558DD
2
31
48
IC2ANJM4558DD
2
31
48
IC3ANJM4558DD
R913K 1%
R1039.2K 1%
R839.2K 1%
R1122.1K 1%
C4.047uF5%
R1360.4K 1%
R1810K 1%
C3.047uF5%
R1260.4K 1%
+ 12V
- 12V
X-OVER PCB
R1513K 1%
R739.2K 1%
R139.2K 1%
R1410K 1%
C8.1uF 5%
C5.1uF 5%
R613K 1%
R539.2K 1%
R1939.2K 1%
- 12V
+ 12V
R2022.1K 1%
C2.047uF 5%
C12.047uF 5%
6
57
IC3BNJM4558DD
6
57
IC2BNJM4558DD
R2213K 1%
R17 13K 1%
R2 13K 1%
R4 39.2K 1%R3 39.2K 1%
R21 13K 1%
C110.033uF5%
C1 0.033uF5%
1
2
3
4
5
6
7
X2
VR210KA
VR110KA
+ 12V
- 12V
1
2
3
4
X4
1
2
3
4
X3
1
2
3
X1
C90.1
C100.1
+ 12V+ 12V
- 12V- 12V
C710uF25V NP
C610uF25V NP
LD1GRN
R162.4K
C13100uF16V
C14100uF16V
CH.1 (L) INPUT
CH.2 (R) INPUT
CH.1 (L)
CH.2 (R)
CH.1 (L) OUTPUT
SUB OUTPUT (+)
CH.2 (R) OUTPUT
SUB OUTPUT (-)
VOLUMECONTROL
VOLUMECONTROL
STBY9
IN +3
-Vs 8
IN+MUTE4
-PWVs 15
+Vs 7
BOOTSTRAP 6MUTE10
STBY-GND1
+PWVs 13IN -2
OUT 14
U2 TDA7294V
12
34
REC1KBPS10-02
C11 22uF50V
+E
-E
L2 1.0uH
R10 8R2 1W
C20.1uF100V
R12 13K 1%
R6 26.7K 1%
R41K 1%
C922uF25V
C102200pF
R9 5.1K
C136800uF50V
C186800uF50V
X8 RED
X6 BLACK
X7 RED
C6 10pF
C28 10pF
+E
-E
R175.1K
R185.1K
R34 5.1K
R33 5.1K
R248.2K
R235.1K
C3010uF25V
C3222uF25V
STBY9
IN +3
-Vs 8
IN+MUTE4
-PWVs 15
+Vs 7
BOOTSTRAP 6MUTE10
STBY-GND1
+PWVs 13IN -2
OUT 14
U4 TDA7294V
C21 22uF50V
+E
C160.1
-E
C140.1
L3 1.0uH
R36 8R2 1W
C230.1uF100V
R27 13K 1%
R38 26.7K 1%K
R251K 1%
C2522uF25V
C242200pF
R35 5.1K
R225.1K
R215.1KD3
1N4148
ZD212V 0.5W
R1 8.2K
C3220uF25V
+12V
Q22SC4793
X4
STBY9
IN +3
-Vs 8
IN+MUTE4
-PWVs 15
+Vs 7
BOOTSTRAP 6MUTE10
STBY-GND1
+PWVs 13IN -2
OUT 14
U1 TDA7294V
C5 10uF50V
+E
-E
L1 1.0uH
R3 8R2 1W
C10.1uF100V
R13 13K 1%
R11 26.7K 1%
R141K 1%
C810uF25V
C4390pF
R8 5.1K
C7 10pF
C27 10pF
R155.1K
R165.1K
STBY9
IN +3
-Vs 8
IN+MUTE4
-PWVs 15
+Vs 7
BOOTSTRAP 6MUTE10
STBY-GND1
+PWVs 13IN -2
OUT 14
U3 TDA7294V
C19 10uF50V
+E
C150.1
-E
C170.1
L4 1.0uH
R37 8R2 1W
C290.1uF100V
R31 13K 1%
R26 26.7K 1%
R321K 1%
C2010uF25V
C22390pF
R30 5.1K
R205.1K
R195.1K
ZD124V 0.5W
Q12SC1815
R29 1.2K 3W
R28 1.2K 3W
ZD312V 0.5W
C31100uF16V
C26100uF16V
C124.7uF50V
D21N4148
D1 1N4148
R768
R52.4K
R2 2.4K
T
+E
-12V
X11BLACK
X1RED
X10RED/BLACK STRIP
X2RED
+12V
-12V
1
2
3
X9
1
2
3
4
X3
1
2
3
4
X12
SUB INPUT (-)
CH.2 (R) INPUT
SUB INPUT (+)
CH.1 (L) INPUT
FAN24 Vdc
CH.1 (L)OUTPUT
OUTPUTCH.2 (R)
OUTPUT (+)SUBWOOFER
SUBWOOFEROUTPUT (-)
X5 BLACK
X13 BLACK
To CENTER TAP
To POWER
To POWER
To SPEAKER
To CHASSIS
POWER TRANSFORMER
TRANSFORMER
TRANSFORMER
OUTPUTS
MAIN PCB
OUTPUT
1+
1-
2+
2-
X2 NL4MP
1+
1-
2+
2-
X1 NL4MPP1
RED
P2BLACK
P3
RED/BLACK STRIP
CH.1 (L)
OUTPUT
CH.2 (R)
3.15A / 220-240V
FUSE
OUTPUT PCB
18AWG RED 45sm
18AWG BLACK 45sm
Endsstriped15mm
Twisted pair to Subwoofer terminal
18AWG BLACK 18AWG BLACK
18AWG RED
18AWG
RED/B
LACK S
TRIP
18AWG
BLAC
K
1
2
3
4
5
6
7
X1
1
2
3
4
5
6
7
1
2
3
4
5
6
7
SCHEMATIC
Page 9
Worldwide Headquarters • 120 Clover Place, Edison, NJ 08837 • USATel: (732) 738-9003 • Fax: (732) 738-9006
France • G.S.L. France • 11, Avenue Leon Harmel, Z.I. Antony, 92160 Antony, FranceTel: + 33 (0) 1 55 59 04 70 • Fax: + 33 (0) 1 55 59 04 80
Germany • Gemini Sound Products GmbH • Ottostrasse 6, 85757 Karlsfeld, GermanyTel: 08131 - 39171-0 • Fax: 08131 - 39171-9
UK • Gemini Sound Products • Unit C4 Hazleton Industrial Estate, Waterlooville, UK P08 9JUTel: 087 087 00880 • Fax: 087 087 00990
Spain • Gemini Sound Products S.A. • Rosello, 516, Barcelona, Spain, 08026Tel: 349-3435-0814 • Fax: 3493-347-6961
© Gemini Sound Products Corp. 2002 All Rights Reserved
Parts of the design of this product may be protected by worldwide patents.Information in this manual is subject to change without notice and doesnot represent a commitment on the part of the vendor. Gemini SoundProducts Corp. shall not be liable for any loss or damage whatsoeverarising from the use of information or any error contained in this manual.No part of this manual may be reproduced, stored in a retrieval system ortransmitted, in any form or by any means, electronic, electrical, mechanical,optical, chemical, including photocopying and recording, for any purposewithout the express written permission of Gemini Sound Products Corp.It is recommended that all maintenance and service on this product isperformed by Gemini Sound Products Corp. or its authorized agents.Gemini Sound Products Corp. will not accept liability for loss or damagecaused by maintenance or repair performed by unauthorized personnel.
In the USA: If you experience problems with this unit,call 1-732-738-9003 for Gemini Customer Service.
Do not attempt to return this equipment to your dealer.
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