Electro-Harmonix Attack Decay Manual page 18

ENABLING/DISABLING THE INTERNAL COMPRESSOR
The original Attack Decay has a compressor hardwired to the input signal.
The compressor helps bring up the volume on sustained notes so that the
Attack and Decay envelopes have more signal to work with as the
envelopes run. This version of the Attack Decay has an emulation of that
compressor situated after the pluck detect but before the Harmonix fuzz.
The compressor can be separately enabled/disabled for Poly and Mono
modes and by default is enabled for both modes.
To enable or disable the internal compressor do the following:
1. To toggle the internal compressor for Mono mode, ensure that the
POLY button is not lit.
2. To toggle the internal compressor for Poly mode, ensure POLY is lit.
3. Press and hold the POLY button, then press and hold PRESET 3.
4. While holding POLY and PRESET 3, press and release the PRESET 2
button. Once PRESET 2 is released, release the other two buttons.
5. The PRESET 1 button will blink slowly to indicate that the compressor
has been turned off.
6. To turn on the compressor, repeat steps 3 & 4. The PRESET 1 button
will blink quickly to indicate the compressor is enabled.
Each preset saves and recalls its own compressor status.
CHANGING HARMONIX FUZZ LOCATION IN FX LOOP
Normally the Attack Decay's built-in Harmonix distortion block is situated
before the SEND jack so that the distortion effect is present on the Send
signal. You may optionally re-locate the Harmonix block within the FX loop
so that the Return signal goes through Harmonix instead.
To move the location of the Harmonix block do the following:
1. Press and hold the POLY button, then press and hold PRESET 3.
2. While holding both POLY and PRESET 3, press and release the PRESET
1 button. Once PRESET 1 is released, release the other two buttons.
3. The PRESET 2 button blinks quickly to indicate that the Harmonix
Distortion block has been moved to the RETURN jack input.
4. To move Harmonix back to the SEND jack, repeat steps 1 and 2. This
time PRESET 2 will blink slowly to indicate that Harmonix is located
before the SEND jack.
 Each preset saves and recalls the FX loop Harmonix location.
 If the Return jack is not used then the Harmonix effect will be present
on the SEND signal.
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