Connections - Electro-Harmonix Attack Decay Manual

C
ONNECTIONS
INPUT Jack – This 1/4" phone jack is the main audio input on the Attack
Decay. Input impedance = 1M.
OUTPUT Jack – This 1/4" phone jack is the main audio output of the
Attack Decay. The volume envelope, and other effects, emanate from this
jack. Output impedance = 500.
SEND Jack – This 1/4" phone jack reproduces the input signal and by
default, the Harmonix fuzz when enabled. Use this jack as the signal
source for the Attack Decay's external FX loop. Impedance = 500.
RETURN Jack – This 1/4" phone jack receives the output from an
external effects loop or another instrument. The signal present at this jack
is routed through the Attack Decay's internal volume envelopes. If no
connection is made to this jack then the signal at the INPUT jack (or the
output of the Harmonix section if activated) is routed through the volume
envelopes. The input impedance is 2M.
See page 13 for details and tips on using the SEND and RETURN jacks.
EXP Jack – Connect an expression pedal or control voltage (CV) to allow
for external control over every knob on the Attack Decay. See page 10 for
a description on how to set up and control the Attack Decay with an
external expression pedal. Connect a clock pulse to EXP to trigger the
volume envelopes from an external source, see page 17 for details.
The polarity of the expression pedal's plug must have the Sleeve
connected to the heel position (usually GND), Ring connected to the toe
position and the Tip connected to the wiper. The nominal expression pedal
impedance is 10kΩ though most other values will work fine. Please do not
go below 6kΩ on your expression pedal's potentiometer impedance. Some
suggested Expression Pedals: EHX Expression Pedal, Moog ® EP-3,
Roland ® EV-5 or Boss ® FV-500L. Additionally, the EXP IN jack can be
connected to a CV source using a TS plug; the acceptable control voltage
range is 0V to 5V. The acceptable trigger clock pulse amplitude range is
1.5Vpp to 15Vpp.
9V Power Jack – Plug the output of the Attack Decay's supplied
EHX9.6DC/200mA AC adapter to the 9V power jack located at the top of
the pedal. The Attack Decay requires 140mA at 9VDC with a center-
Note: Expect
negative plug. Do not exceed 10.5VDC on the power jack.
unreliable behavior if the power supply rating is less than 140mA.
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