Extron electronics VC 50 User Manual

The Extron VC 50 is a remote volume controller designed to work with the Extron PoleVault
switcher (PVS 204SA with amp), the MLP (Mic to Line Pre-amplifier), and the MPA series
audio amplifiers (e.g. MPA 122).
Mounted into standard one-gang wall box or mud ring, the VC 50 has a rotary volume control
knob, which provides easy adjustment and ensures precise volume levels.
Captive screw connectors on the back panel provide quick and easy connectivity.

Remote Connector Pin Configuration

As shown at right,
Pin 1 is reference voltage.
Pin 2 is volume control with DC voltage.
Pin 3 is ground.
N All nominal levels are at ±10%.
For proper volume control, use all three pins when
connecting the device (see diagram).

Audio Level Setting Procedure

To set the system level not to exceed the maximum volume when
using the VC 50, do the following:
1. Reduce the power amplifier volume to minimum.
2. Turn the Volume knob on the VC 50 to the maximum position.
3. Slowly turn up the power amplifier volume to the maximum
undistorted sound level allowed for the application.
As shown below with the MPA 122 Mini Power Amplifier, the Extron VC 50 serves to remotely
control volume levels for Extron audio amplifiers.
Extron USA - West Extron USA - East
Headquarters
+800.633.9876
+800.633.9876
Inside USA / Canada Only
Inside USA / Canada Only
+1.919.863.1794
+1.714.491.1500 +1.919.863.1797 FAX
+1.714.491.1517 FAX
VC 50
Extron
MPA 122
2
1 2
Mini Power
A
M P S
U T
T P
O U m s
O h
4 /8
Amplifier
U S
C T E
R
S M O
U T
R E
I N P
L
E
V U T
1 0
L /M
V O
R
L
L
R
W E
P O
R
Audio
Output
Projector
Extron EMEA Extron Asia
+800.3987.6673 +800.7339.8766
Inside Europe Only Inside Asia Only
+31.33.453.4040 +65.6383.4400
+31.33.453.4050 FAX +65.6383.4664 FAX
MPA, PVS, MLP
10V
VOL
M E
L U
V O
Extron
VC 50
Remote Volume
Controller
5 0
V C
Extron Japan Extron China
+81.3.3511.7655 +400.883.1568
+81.3.3511.7656 FAX
Inside China Only
+86.21.3760.1568
+86.21.3760.1566 FAX
™
Extron
units
Extron
VOL
10V
STP 22
Cable
VOLUME
VC 50
Extron Middle East
+971.4.2991800
+971.4.2991880 FAX
68-1154-01
Rev. B
10 08