Remote Volume Control - Extron electronics XPA 1002 User Manual

Xtra series half-rack audio power amplifiers
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h
High pass filter (HPF) toggle switch (XPA 2001 series) — Use a small
screwdriver to toggle this recessed two-position switch. Setting the switch to 80 Hz
(default) prevents the saturation of 70 V and 100 V speaker input transformers by
low frequency signals. Saturation can result in severe distortion of the speaker output
signal.
HPF
80 Hz
OFF
NOTES:

Remote Volume Control

Options for the remote control of the XPA amplifiers include the Extron VCM 100 and
VC 50 volume controllers. Third party 10k potentiometer volume controllers can also be
connected to this port.
As shown in the following illustration, pin V (1) on the XPA is a 10 VDC reference voltage.
Pin C (2) is the volume control DC voltage input. The range is 0 to 10 V, where 0 V is mute
and 10 V provides maximum volume. Pin G (3) is ground.
NOTE: All nominal levels are at ±10%.
REMOTE
10V
50mA
G
V
C
G
or
10V
50 mA
VOL/MUTE
1
2 3
4
5
STANDBY
Figure 8.
HPF
80 Hz
or
OFF
The filter may be safely turned off if high pass filtering is applied to the
source input signal upstream of the amplifier. Otherwise, it should be left on.
The high pass filter toggle switch may be labeled one of two ways. The
wiring and function are the same, whichever way your product is labeled.
Extron
STP 22
Cable
Red
Black
Ground
Pinout Diagram for VCM 100 MAAP Connection to XPA Remote
Connector
XTRA Series Half-Rack Audio Power Amplifiers • Operation
VOLUME
MUTE
VCM 100
17

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Xpa 2001-100vXpa 1002 plusXpa 2001-70v

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