Introduction, Audio connections – Drawmer DS501 Power Gate User Manual

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The Drawmer DS501 is a sophisticated dual channel noise gate, which may be used

as two independent channels or linked for true stereo operation. It incorporates a

number of impressive features, many pioneered by Drawmer, which are invaluable

to the sound engineer and not found on conventional noise gates:


Variable high-pass and low-pass filters for 'frequency conscious' gating.


Comprehensive envelope control, attack, hold, decay and range.


Extremely low-noise and low-distortion circuitry.


Ultra-fast response time.


Comprehensive side-chain filtering.


'Key listen' facility.


'Traffic light' display giving clear indication of gate status.


Signal below threshold indicator.


Balanced inputs and outputs.


Peak punch.


All input and output connectors are balanced XLRs, with the wiring convention

being: pin 2 hot, pin 3 cold and pin 1 ground. For unbalanced operation, it is

important to short pin 3 of the XLR connector to ground (pin 1) at both input and


Key inputs are made via ¼" mono jack connectors. If the Key jack sockets are

permanently wired to a patch bay, it is important that the patch bay sockets are fully

normalised to prevent random unwanted triggering.

If earth loop problems are encountered,

never disconnect the mains earth but

instead, try disconnecting the output signal screen at one end of the cables

connecting the DS501 to the patchbay, we suggest inside the XLR connector itself. If

such measures are necessary, balanced operation is recommended.