Unit 65 Technical Stage OperationsSound

Speakers

• There are two types of speakers; Active and passive speakers.

• An active speaker already contains an amplifier already so to make it work it only needs a power source and sound source to make it work.

• A passive speaker does not contain an amplifier so you need to make this type of speaker work you need to connect an external amplifier and sound source into the amplifier to make this work.

• If you're using speakers in a high place it is ideal to use a passive speaker as it is lighter as it doesn’t contain an amplifier.

• Even though an a active speaker is easier to use and connect up it is heavier.

Cables

• The different cables used for sound are as follow; DMX , phono, jack (mini and quarter-inch ), kettle lead (power cable).

• A DMX is used for connecting speakers to the sound desk and/or connecting up a microphone. A DMX has a male and female end.

• A phone cable is usually connected to one end of a Jack cable. The jack goes into the sound source and the phone cable connects to the sound desk (one cable for left speaker and one for right)

• A kettle lead is used to send power from the mains to the equipment you want to power.

Mixing desk

• A mixing desk controls the sound. • A sound source goes into the desk and the desk controls

the volume, distortion of the sound. • The mixing desk sends the changed music back out to the

left and right speakers.• A sound desk the desk knobs are in the order of:The gainEQ-high Mid LowPanPFLAnd the volume control