CARE OF YOUR MIXER
General Precautions
lAvoid storing or using the mixer in conditions of excessive heat or cold, or in positions where it is likely to be subject to vibration, dust or moisture.
lKeep the mixer clean using a soft dry brush, and an occasional wipe with a damp cloth or ethyl alcohol. Do not use any other solvents which may cause damage to paint or plastic parts.
lAvoid placing drinks or smoking materials on or near the mixer. Sticky drinks and cigarette ash are frequent causes of damage to faders and switches.
Regular care and inspection will be rewarded by a long life and maximum reliability.
Glossary
AFL (After Fade Listen) | a function that allows the operator to monitor the |
| channel independently of the main mix. |
auxiliary send | an output from the console comprising a mix of signals from channels and |
| groups derived independently of the main stereo/group mixes. Typically |
| the feeds to the mix are implemented on rotary level controls. |
balance | the relative levels of the left and right channels of a stereo signal. |
balanced | a method of audio connection which ‘balances’ the signal between two |
| wires and a screen which carries no signal. Any interference is picked up |
| equally by the two wires, but out of phase resulting in cancellation of the |
| interference signal. |
clipping | the onset of severe distortion in the signal path, usually caused by the peak |
| signal voltage being limited by the circuit’s power supply voltage. |
DAT | Digital Audio Tape, a |
dB (decibel) | a ratio of two voltages or signal levels, expressed by the equation |
| dB=20Log10 (V1/V2). Adding the suffix ‘u’ denotes the ratio is relative to |
| 0.775V RMS. |
DI(direct injection)/DI Box | |
| the practice of connecting an electric musical instrument directly to the |
| input of the mixing console, rather than to an amplifier and loudspeaker |
| which is covered by a microphone feeding the console. |
direct output | a post fade line level output from the input channel, bypassing the summing |
| amplifiers, typically for sending to individual tape tracks during recording. |
equaliser | a device that allows the boosting or cutting of selected bands of frequen- |
| cies in the signal path. |
fader | a linear control providing level adjustment |
feedback | the `howling’ sound caused by bringing a microphone too close to a loud- |
| speaker driven from its amplified signal. |
foldback | a feed sent back to the artistes via loudspeakers or headphones to enable |
| them to monitor the sounds they are producing. |
frequency response | the variation in gain of a device with frequency. |
gain/input sensitivity | the variation in level of the signal |
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