Master Section 3

Rear Panel Features

Left, Right and Mono Bus Inputs

These three female XLRs are used to bring external signals directly into the Left, Right and Mono mix buses. Useful for linking multiple mixers together or to introduce addi- tional signals into the main mix.

Balanced in, Nominal level is +4 dBu

Group 1, 2, 3 & 4 Bus Inputs

These four 1/4” TRS jacks are used to bring external signals directly into the Group mix buses. Useful for linking multiple mixers together.

Balanced in, Nominal level is +4 dBu

Insert For Left, Right and Mono

This switching 1/4” TRS jack allows an external processor to be inserted into the signal path of the Main outputs.The tip carries the SEND signal from the mixer, and the ring carries the RETURN signal back to the mixer.The insert-send point is located directly after the Main mix bus, the return comes back at the top of the Master fader.

Tip is Send, Ring is Return, Sleeve is Audio Ground. Send (output) impedance is 100 unbalanced Return (input) impedance is 5K￿ unbalanced Nominal Operating Level= -2 dBu

NOTE: To avoid any degradation of the mixer's output signal, any processing gear patched into any insert point should have a low impedance output (<100￿ ) and must be capable of cleanly driving a 2K￿ load to +21 dBu.

Left, Right And Mono Main Outputs

The Left, Right and Mono outputs appear at these male XLRs.The output level is swit- chable between line level and mic level.

Line/Mic Switches For Left, Right And Mono Main Outputs These switches are recessed to prevent accidental changes.

Output levels are provided at line level for feeding the inputs of a signal processor, another mixer or a power amplifier.

Nominal Level= +4 dBu, 100 Balanced

Output levels are reduced to mic level for feeding the Microphone inputs on a signal processor or another mixer. Outputs are protected against phantom power.

Nominal Level= -25 dBu, 200￿ Balanced

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Crest Audio X 18R, X 20R Left, Right and Mono Bus Inputs, Group 1, 2, 3 & 4 Bus Inputs, Insert For Left, Right and Mono