User guide

5-25
MLC 104 Plus Series • Special Applications
PRELIMINARY
Using an Amplifier and Volume Controller with the MLC
The MLC can attenuate but not amplify audio volume, so you can add an
amplifier (such as an Extron mini power amp [MPA]) to the system and an Extron
MLA-VC10 volume controller. The MLA-VC10 provides a variable control voltage
(supply voltage) of between 0 VDC and 10 VDC to remotely control the amplifier’s
volume output.
The following picture shows a typical MLC 104 Plus Series system featuring an
amplifier and volume controller.
MLA-VC10
POWER/
STA
TUS
A B
MLC/RS-232
POWER
Speakers
MLA-VC10
DVD
VCR
1
2
3
4
5
6
ON
7
8
CONFIGURATION
AMP/MIXER
CONTROL
CTRL
12 VDC
Control
Voltage
RS-232
12 VDC
Power Supply
OFF
ON
OFF
ON
Extron
CONF
IG
DISPLAY
MLC 104 IP Plus
VOLUME
1
2
3
4
ON
OFF
VCR
DVD
PC
MLC 104 IP Plus
MediaLink
Controller
BAS
S
LEV
EL
TRE
BLE
MINI PO
W
ER
AMPL
IFIER
MPA
122
O
N
O
F
F
LIMITER
S
TE
R
E
O
D
U
A
L
M
O
N
O
MPA 122
Mini
Power
Amplifier
Volume control hardware setup
1. Cable these products as shown in the following diagrams, and refer to each
product’s user’s manual as needed.