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MPA 152 Amplier • Installation
Installation, cont’d
2-12
Remote control
Wiring for remote control
This 3-pin, captive screw connector allows a
wall-mounted audio controller or MediaLink
product to control volume and mute levels
remotely.
Options for remote control include Extron's VC 50
(PN 70-530-02), VCM 100 AAP (PN 70-396-x1), VCM 100 MAAP
(PN 70-397-x1) and MLA VC10 (PN 60-502-01).
Third party 10k potentiometer volume controllers can also be
connected to this port.
N
The length of the exposed wires in the stripping process
is critical. The ideal length is 3/16” (5 mm). Any longer
and the exposed wires may touch, causing a short circuit
between them. Any shorter and the wires can be easily
pulled out even if tightly fastened by the captive screws.
C
Do not tin the wires. Tinned wire does not hold its
shape and can become loose over time.
Wire the the remote control connector to the VCM 100 MAAP as
shown in the gure and instructions below:
GND (Pin 3)
Volume Pot
10K Ohms
2K
Vol/Mute
(Pin 2)
10 V (Pin 1)
Mute
Switch
REMOTE
Figure 2-8 — Wiring diagram for remote control
Pin 1 is 10 V DC reference voltage.•
Pin 2 (VOL/MUTE) has two functions:•
a. It can be used as a variable voltage input. The volume
control range DC voltage range is 0 to 10 V, with 0
V giving full attenuation and 10 V giving maximum
volume.
b. It can be used for remote control muting. Sound is
muted while the mute pin is shorted to ground.
Pin 3 is ground.•
N
All nominal levels are at ± 10%
REMOTE
VOL/MUTE
10V50mA