10
© 2006 Wohler Technologies Inc. ALL rights reserved
AMP1A-4S/-10S/-LP4S/-LP10S
User Manual P/N
821527
Rev-
B
Please refer to
Figure-2b
on the following page to familiarize yourself with the rear panel features of the
AMP1A Series
units. The
following sections describe these features and are referenced, by letter, to
Figure-2b
.
A
Power - IEC-320 Connector
Attach a standard IEC-320 power cord between this connector and mains power (100 - 250VAC, 50/60 Hz). The front panel power
LED (
Item 4
, page
8
) will glow GREEN to indicate operating voltages are present.
B
Balanced Inputs (Channels 1-4) - 3-Pin Male Phoenix
(AMA1A-4S and ANAP1A-LP4S Only)
These balanced (40K
Ω
) 3-pin Phoenix connectors (left and right) accept standard analog audio signals. The two banks of
inputs, Channel A (Left) and Channel B (Right), are comprised of four connectors each for a total of eight inputs (four stereo
pairs). Connector pinout information is silk-screened on the rear panel above each connector.
C
Balanced Inputs (Channels 1-10) - 3-Pin Male Phoenix
(AMA1A-10S and ANAP1A-LP10S Only)
These balanced (90K
Ω
) 3-pin Phoenix connectors (left and right) accept standard analog audio signals. The two banks of
inputs, Channel A (Left) and Channel B (Right), are comprised of ten connectors each for a total of twenty inputs (ten stereo
pairs). Connector pinout information is silk-screened on the rear panel between the two rows of connectors.
D
Selected Outputs - 3-Pin Male XLR
These two 3-pin male XLR connectors are analog outputs of the audio source as selected by the Source Select Switch on the
front panel (
Item 6
, page
8
). The output is not affected by the volume/balance controls or headphone mute. See below for XLR
connector pinout information.
Rear Panel Features
Section 2: Operation
High (+)
Low (-)
Gnd
(Shield)
Pin-1
Pin-2
Pin-3
Male XLR Pinout
