Behringer XR2400 AutoQuad Auto Interactive Expander Gate

This 4-channel noise gate is made by Behringer and is an extremelyflexible signal processor that can be by-passed to take it out of the soundcircuit. Across the top of the front panels are a series of traffic lightLEDs, offering a visual display of what state the gate is currently in. Likethe compressors, Backstage use the gate as an insert for specific channels (usuallywith the drums). By inserting a single stereo jack into the K1, the signal issent to the gate, processed and then returned through to the K1s eq section sothat it can be mixed further.

Controls : The XR2400 is fairly simple to use, with only a few importantcontrols:

Threshold : The point at which a gate will start to take effect.

Release time : The time for which the gate waits before acting (ie. letting asignal pass to the output stage). The attack time is calculated automaticallyfrom this control.

In/Out switch : Controls whether the gate has any effect or not.

Auto switch : Activates the automatic gate function, where the ratio-curve,attack time and release time are varied automatically depending on the inputsignal.

Range switch : Controls the maximum amount of attenuated (how much the signalis reduced by). This can either be set at 80dB (effectively silent) or 20dB(low but audible).

Slave switch : This allows multiple channels to be linked together (eg. forstereo inputs). When depressed, the channel will be operate on exactly the samesettings as the one to its left.

Key filters : These two controls alter which frequency range will trigger thegate. The lowest frequency in the range is controlled by the low cut whilst thehigh cut controls alter the highest frequency. To listen to what range isactually being used by the gate, press the key listen switch.

Please refer to pictures * Goodcondition * Powers up but not further tested * Slight scratches on top * Soldas is

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