Extron electronics MPA 152 Plus User manual

MPA 152 Plus
Brand
Extron electronics
Model
MPA 152 Plus
Category
Projector accessories
Type
User manual
1
MPA 152 Plus • Setup Guide
The Extron MPA 152 Plus is an ENERGY STAR
®
qualied
mini power amplier. 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.
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 amplier and does not provide
secure mounting for the unit.
ATTENTION:
z Although the amplier 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 amplier must be plenum rated.
z Bien que l’amplicateur soit conforme à la norme relative aux faux plafonds, la source d’alimentation fournie avec ne
l’est pas. Les câbles depuis et vers l’amplicateur doivent aussi être classés plenum. La source d’alimentation ne doit
pas être placée dans l’espace plenum.
Extron
CONFIG
DISPLAY
VOLUME
1
2
3
4
ON
O
FF
MLC 104 IP PLUS
VID
EO
AU
X
VID
EO
PC
IMAGE
MUTE
POWER
12V
0.7A MAX
4
Ω
8
Ω
CLASS 2
WIRING
L
R
L
R
V C G
10V
50mA
L
MPA 152 Plus
R
/
INPUTS
OUTPUT REMOTE
Extron
MPA 152 Plus
Mini Power
Amplier
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
3. Attach the speakers to the MPA 152 Plus output, using the 4‑pole, 5mmcaptive screw receptacle
(see the gure at right).
ATTENTION:
z Do not ground or short the speaker outputs as this will damage the amplier.
z Ne pas mettre à la terre ni créer de court‑circuit dans les sorties de
l’enceinte, an d’éviter tout risque de détérioration de l’amplicateur.
4
Ω
8
Ω
CLASS 2
WIRING
L
R
/
OUTPUT
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 gure at right), which can be used
individually or together.
1
1
12
223
3
3
L
R
L
R
INPUTS
Tip (+)
Sleeve ( )
RCA Connector
Sleeve ( )
Ring (R)
Tip (L)
3.5 mm TRS Connector
Balanced Stereo Input
Tip
Ring
Tip
Ring
Sleeves
LR
Unbalanced Stereo Input
Tip
Sleeve
Sleeve
Tip
LR
Balanced Mono Input
Tip
Ring
Sleeve
LR
Unbalanced Mono Input
Tip
Sleeve
LR
1
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 oor.
2
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 oor.
3
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.
Tip (+)
Sleeve ( )
RCA Connect
or
Sleeve ( )
Ring (R)
Tip (L)
3.5 mm TRS Connector
Balanced Stereo Input
Tip
Ring
Tip
Ring
Sleeves
LR
Unbalanced Stereo Input
Tip
Slee
ve
Slee
ve
Tip
LR
Balanced Mono Input
Tip
Ring
Sleeve
LR
Unbalanced Mono Input
Tip
Sleeve
LR
MPA 152 Plus • Setup Guide (Cont’d)
For information on safety guidelines, regulatory compliances, EMI/EMF compatibility, accessibility, and related topics, see the
Extron Safety and Regulatory Compliance Guide on the Extron website.
© 2013‑2020 Extron — All rights reserved. www.extron.com. All trademarks mentioned are the property of their respective owners.
Worldwide Headquarters: Extron USA West, 1025 E. Ball Road, Anaheim, CA 92805, 800.633.9876
68-1320-52 Rev. C
12 20
VCG
10V50mA
REMOTE
The MPA 152 Plus sums and weights the left unbalanced signals from the TRS and RCA receptacles. This summed, unbalanced
signal is then summed with the left balanced signal from the captive screw receptacle. The same applies to the right channel.
The left and right channels are then sent to the output ampliers in one of two ways, depending on how the front panel
switch is set (see the diagram to the right).
z Stereo: The left and right channels are sent to the left and right output amplifers respectively.
z Dual Mono: The left and right channels are summed and then the resulting mono signal is fed to both of the output
ampliers.
NOTE: The captive screw, RCA and TRS inputs are buffered.
5. Adjust the MPA 152 Plus input LEVEL, BASS, and TREBLE from the front panel (see gure at right).
a. If necessary, unplug the remote connector from the unit (see step 6, below).
b. If connecting the amplier to a system with adjustable volume, set the system volume
to its lowest point. Then adjust the MPA152 Plus front panel LEVEL potentiometer fully
counterclockwise without using excessive torque.
c. Set the system volume to its maximum volume level (no sound should come out).
d. Return to the MPA 152 Plus and raise the LEVEL until sound distortion rst occurs, then lower slightly until the distortion
disappears. This setting ensures that, whatever the system volume setting may be, no clipping occurs.
e. Adjust the BASS and TREBLE potentiometers to preference without using excessive torque.
ATTENTION:
z The default position of the LEVEL potentiometer when shipped is turned fully counter‑clockwise (fully attenuated). The
default position of the BASS and TREBLE potentiometers is 12 o’clock (at response).
z La position par défaut du potentiomètre de niveau lors de son expédition est orientée vers le sens antihoraire
(atténuation complète). La position par défaut des potentiomètres de graves et d’aigus est 12 h (réponse linéaire).
z Do not use a screwdriver to adjust the potentiometers. The potentiometers should only be adjusted as needed using
the included Extron tweeker (small screwdriver).
z Ne pas utiliser de tournevis pour ajuster les potentiomètres. Les potentiomètres doivent uniquement être ajustés
selon les besoins avec le petit tournevis Extron fourni.
z While potentiometer tuning knobs may look like screws, they do not function in the same manner. Use a light touch
when adjusting to avoid applying excessive torque to the potentiometers.
z Bien que les boutons de réglage du potentiomètre ressemblent à des vis, ils n’ont pas la même fonction. Exercez une
pression légère lors du réglage an d’éviter un serrage excessif des potentiomètres.
z Applying excessive torque can cause mechanical damage to the potentiometer, rendering it inoperable.
z Un serrage excessif peut endommager le potentiomètre, le rendant inutilisable.
AC Power Cord
POWER
12V
0.7A MAX
Power
Receptacle
DC Power Cord
Captive Screw
Connector
MPA 152 Plus
Amplifier
Tie
Wrap
External Power Supply
(12 VDC, 2.0 A)
Ground all
Devices
Ground
+12 VDC input
G
3/16"
(5 mm) Max.
Ridges
Smooth
AA
SECTION A–A
POWER
12V
0.7A MAX
Power Supply
Output Cord
BASSLEVEL TREBLE
MINI POWER AMPLIFIER
MPA 152 PLUS
STEREO
DUAL
MONO
The MPA152 Plus ships with a 24 W desktop power supply.
The power cord connectors are correctly wired when shipped.
Connect the pre‑wired captive screw connector to the power
receptacle on the amplier (see the gure to the right).
To wire the connector yourself, ensure the power cords have
the correct polarity. The ground cord has ridges.
ATTENTION:
z See the attention notices in the Power Input section
of the MPA152 Plus Series User Guide for important
information about using power supplies.
z Reportez‑vous aux précautions d’emploi incluses
dans la section sur l’entrée d’alimentation du MPA152
Plus Series User Guide pour des informations
essentielles sur l’utilisation des sources d’alimentation.
6. The rear panel 3‑pole Remote captive screw port on the amplier can be used for remote control of the
volume by an Extron volume controller such as an Extron VCM100 AAP, VC 50, or MLA VC10 Plus. A
MediaLink controller can also adjust the audio volume via a network connection or by IR remote (see the
MPA 152 Plus Series User Guide).
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Extron electronics MPA 152 Plus User manual

MPA 152 Plus
Brand
Extron electronics
Model
MPA 152 Plus
Category
Projector accessories
Type
User manual
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