Extron electronic MEDIALINK MLC 52 - Manual (Page 39)

3-11 MLC 52 Series MediaLink Controllers • Operation
Using the MLC 52 VC Models with the MPA Series Power
Amplifiers
The dedicated volume control knob on the MLC 52 IR VC or the MLC 52 RS VC
controls the audio output of an Extron MPA 122 or MPA 181T power amplifier, to
which speakers for the system are connected.
The following diagram shows an example of a system that uses an MLC 52 VC
model with an MPA amplifier.
PO WE R
OU TPU TS
4/8 O hms
INP UTS
L
R
L
R RE MO TE
10V VO L/M UTE
L
MP A 1 22
R
C C
US US
PC
VGA with
Audio
DVD
S-video with
Audio
Projector
VCR
Composite Video
with Audio
Switched
Audio
Output
MPA
Volume
Control
Extron
MLC 52 RS VC
Basic MediaLink Controller
with IR or RS-232 Hardwired
Projector Control
Extron
MPA 122
Mini Power
Amplifier
Extron
SI 26X
Ceiling Speakers
(in parallel)
RS-232
Projector Control
ML C 5
2
DIS
PL
AY
OF F
ON
AU TO
IMA
GE
PC
DV D
VC R
VO LUM
E
Application diagram using an MLC 52 VC with an MPA series power
amplifier
Requirements for the MLC 52 VC with volume control knob
To set up and operate a system that contains an MLC 52 VC model, which has a
volume control knob on the faceplate, and an Extron power amplifier, you must
ensure that the following conditions are met:
• The projector must have dedicated video and audio inputs for each source
used in the system.
• The projector must have a switched audio output. On most projectors, this
connector is labeled as “Monitor Output” or “Audio Output,” as shown in the
following illustration. With a switched audio output, the projector outputs
the audio from the selected video source.
• The system must incorporate an Extron MPA series power amplifier.