Extron electronics MPA 401-70V Setup Manual page 2

MPA 401-70V and MPA 401-100V • Setup Guide (Cont'd)
NOTES:
•
The input receptacle may be labeled in one of two ways: the ground pins of the input
connector port may be labeled
function are the same whichever way the product is labeled
•
The MPA 401 amplifier sums the left and right signals from both the TRS and RCA
inputs to form Sum 1. Sum 1 is then weighted. At the same time, the amplifier sums
the left and right signals from the captive screw input to form Sum 2. Sum 1 and Sum 2
are then summed together to form a single mono signal. See figure 6 on page 9 of the
MPA 401 Series User Guide for more details.
•
The captive screw, RCA and TRS inputs are buffered.
Ensure that the audio output of the projector is set to variable out. Multiple input options can be
used simultaneously and result in summing.
Step 5 — Connect power cords to the MPA 401 and other audio
equipment. The MPA 401 ships with an Extron 36 W desktop power
supply.
Connect the pre-wired captive screw connector into one of the two pole,
3.5 mm captive screw outlets on the power supply and the other end into
the power receptacle on the amplifier (see the figure to the right). The
power cord connectors are correctly wired when shipped.
ATTENTION:
•
See the attention notices in the Power Input section of the
MPA 401 Series User Guide for important information about using
power supplies.
•
When the 36 W power supply is connected to the MPA 401, it
must not be shared with any other devices.
Step 6 — Adjust the MPA 401 input level, bass, and treble from the front panel (see figure at right).
If necessary, unplug the remote connector from the unit (see step 7, below).
1.
If connecting the amplifier to a system with adjustable volume, set the volume to its lowest
2.
point. Then adjust the MPA 401 front panel level potentiometer fully counterclockwise.
Set the system volume to its maximum volume level (no sound should come out).
3.
Return to the MPA 401 and raise the level until sound distortion first occurs, then lower slightly until the distortion disappears.
4.
This setting ensures that, whatever the system volume setting may be, no clipping occurs.
Adjust bass and treble to preference.
5.
Step 7 — The rear panel 3-pole Remote captive screw receptacle on the amplifier 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 401 Series User Guide).
NOTE: Control signal ground pins may be labeled as
are the same, whichever way the product is labeled.
Extron Headquarters
+1.800.633.9876 (Inside USA/Canada Only)
Extron USA - West Extron USA - East
+1.714.491.1500 +1.919.850.1000
+1.714.491.1517 FAX +1.919.850.1001 FAX
or (see the images to the right). The wiring and
or "G." The wiring and function
Extron Asia Extron Japan
Extron Europe
+800.3987.6673
(Inside Europe Only)
+31.33.453.4040 +65.6383.4400 +81.3.3511.7655
+65.6383.4664 FAX +81.3.3511.7656 FAX
+31.33.453.4050 FAX
© 2013 Extron Electronics All rights reserved.
MPA 401 series
Amplifier
Power Receptacle
12V
1.5A MAX
DC Power Cord
Captive Screw Connector
REMOTE
10V
V
Extron Middle East
Extron China
+86.21.3760.1568 +971.4.299.1800
+971.4.299.1880 FAX
+86.21.3760.1566 FAX
www.extron.com
L
(SUMMED)
L
(SUMMED)
R
R
INPUTS
INPUTS
L
(MONO)
R
R
L
(MONO)
36 W Power Supply
AC Power Cord
DC Power
Outputs
Captive Screw
Connector
Tie
Wrap
Power Supply
Output Cord
LEVEL BASS TREBLE
MPA 401
MINI POWER AMPLIFIER
10V 50mA
50mA
VOL/MUTE
REMOTE
C G
Extron Korea Extron India
1800.3070.3777
(Inside India Only)
+82.2.3444.1571 +91.80.3055.3777
+82.2.3444.1575 FAX +91.80.3055.3737 FAX
68-1436-50
Rev C 05 13
2