1
MPA 152 Plus • Setup Guide
The Extron MPA 152 Plus is an ENERGY STAR
®
qualified
mini power amplifier. It delivers up to 15 watts (rms) per
channel stereo or dual mono into a 4 ohm sound system,
or 8 watts (rms) per channel into an 8 ohm system.
For complete instructions, see the MPA 152 Plus User
Guide, which is available at
www.extron.com
.
Installation
To install and set up an MPA 152 Plus, follow these steps:
1.
Turn off all equipment and disconnect from power
sources.
2.
Mount the Extron MPA 152 Plus on a rack, under a
desk, or on a projector pole.
ATTENTION:
Although the amplifier is plenum
rated, the power supply provided with it is
not. The power supply must not be placed
in the plenum space. Cables to and from the
amplifier must be plenum rated.
NOTE:
Use only the two round mounting holes for mounting the MPA 152 Plus. The other four (hexagonal) holes anchor
stand‑offs for the internal circuit boards. Using them may damage the amplifier and does not provide secure mounting
for the unit.
3.
Attach the speakers to the MPA 152 Plus output, using the 4‑pole,
5 mm captive screw receptacle (see the figure at right).
ATTENTION:
Do not ground or short the speaker outputs as this will
damage the amplifier.
4.
Attach inputs to the MPA 152 Plus unit from the audio source, the
projector, or both. There are three audio inputs (shown in the figure at
right), which can be used individually or together.
a
One pair of RCA receptacles
— these receptacles accept unbalanced, line level audio signals.
The input can be stereo, using two RCA connectors, or mono, using a single RCA connector
plugged into the left receptacle. If unused, the receptacles automatically terminate to lower the
noise floor.
b
One 3.5 mm stereo tip-ring-sleeve receptacle
— this input also accepts unbalanced, line
level audio signals through a 3.5 mm tip ring sleeve (TRS) stereo connector. If unused, the
receptacle automatically terminates to lower the noise floor.
c
One 3.5 mm, 5-pole captive screw receptacle
— this 5‑pole 3.5 mm captive screw receptacle
accepts line level, balanced or unbalanced, mono or stereo audio signals.
Balanced Mono Input
Tip
Ring
Sleeve
LR
Balanced Stereo Input
Tip
Ring
Tip
Ring
Sleeves
LR
Unbalanced Stereo Input
Tip
Sleeve
Sleeve
Tip
LR
Unbalanced Mono Input
Tip
Sleeve
LR
4Ω
8Ω
CLASS 2
WIRING
L
R
/
OUTPUT
L
R
L
R
INPUTS
1
3
2
Tip (+)
Sleeve ( )
RCA Connector
Sleeve ( )
Ring (R)
Tip (L)
3.5 mm TRS Connector
Ext
ron
CO
NF
IG
DISPLA
Y
VOLUME
1
2
3
4
ON
OF
F
ML
C 104 IP
PLUS
VIDE
O
AU
X
VIDE
O
PC
IMAG
E
MUTE
PO
WE
R
12V
0.7A
MA
X
4Ω
8Ω
CLASS
2
WIRING
L
R
L
R
V
C
G
10V
50m
A
L
MP
A 152 PLUS
R
/
INPUTS
OUTPUT
REMO
TE
Extron
MPA 152 Plus
Mini Power
Amplifier
RGBHV
S-Video
Audio
Audio
Audio
Audio
Video
DVD/VCR
Combo
Laptop
Projector
RS-232 or
IR Projector
control
Extron
MLC 104 IP Plus
MediaLink
Controller
with IP Link
Extron
SM 3
Full-range
Speakers
