© 2003 Wohler Technologies Inc. ALL rights reserved
12
AMP2A-4S
and
AMP2A-10S
User Manual P/N
821554
Rev-
B
D
Please refer to Figure-2b on the following page to familiarize yourself with the rear panel features of the AMP2A-4S and AMP2A-
10S units. The following sections describe these features and are referenced, by letter, to Figure-2b.
Rear Panel Features
Section 2: Operation
A
B
C
Power Connector
Attach a standard IEC-320 power cord between this connector and mains power (100 - 250VAC, 50/60 Hz). The front panel
Power Indication LED
(Item 2, page 10) will glow GREEN to indicate operating voltages are present.
Analog Input Connectors - Balanced Phoenix (AMP2A-4S)
These 3-pin male Phoenix connectors (
INPUTS, CHANNEL A (LEFT) and CHANNEL B (RIGHT)
) accept standard
analog audio signals and are configured for balanced 40K
Ω
connections. The two banks of inputs are comprised of four
connectors each for a total of eight inputs (four stereo pairs). Stereo pair numbers silk-screened above the connectors
correspond to the numbers available for selection by the
Source Select Switch
on the front panel (Item 8, page 10).
Connector pinout information is silk-screened just above each input connector.
Analog Input Connectors - Balanced Phoenix (AMP2A-10S)
These 3-pin male Phoenix connectors (
INPUTS, CHANNEL A (LEFT) and CHANNEL B (RIGHT)
) accept standard
analog audio signals and are configured for balanced 40K
Ω
connections. The two banks of inputs are comprised of ten
connectors each for a total of twenty inputs (ten stereo pairs). Stereo pair numbers silkscreened above the connectors
correspond to the numbers available for selection by the
Source Select Switch
on the front panel (Item 8, page 10).
Connector pinout information is silk-screened between the two banks of input connectors.
Selected Output Connectors
These two 3-pin male XLR connectors are analog outputs of the
Analog Input Connectors
(Item B or C) as selected by the
Source Select Switch
on the front panel (Item 8, page 10). The left connector outputs the left channel (channel A) and the
right outputs the right channel (channel B). Both connectors are configured for low impedance connections and the output
signals are not affected by the volume/balance controls or headphone mute. For XLR connector pinout information see the
diagram below.
High (+)
Low (-)
Gnd
(Shield)
Pin-1
Pin-2
Pin-3
Male XLR Pinout
