User Guide
Audio
MPA 401 Series
Mini Power Amplifiers
68-1436-01 Rev. C
12 10
FCC Class B Notice
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a resi-
dential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio communications. However, there
is no guarantee that the interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
z
z
z
z
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
NOTE: This unit was tested with shielded cables on the peripheral devices. Shielded cables must be used with
the unit to ensure compliance with FCC emissions limits.
For more information on safety guidelines, regulatory compliances, EMI/EMF compliance, accessibility, and
related topics, click here.
Notational Conventions Used in this Guide
TIP: A tip provides a suggestion to make setting up or working with the device easier.
NOTE: A note draws attention to important information.
CAUTION: A caution warns of things or actions that might damage the equipment.
WARNING: A warning warns of things or actions that might cause injury, death, or
other severe consequences.
Copyright
© 2010 Extron Electronics. All rights reserved.
Trademarks
All trademarks mentioned in this guide are the properties of their respective owners.
Contents
Introduction ............................................ 1
MPA 401-70V and MPA 401-100V Description 1
MPA 401-70V and MPA 401-100V Features..... 2
Rear Panel and Cabling .......................... 3
Rear Panel Cabling........................................... 3
Power Input..................................................... 4
Audio Inputs.................................................... 5
Remote Input Connector.................................. 6
Speaker Connections....................................... 6
Setup and Operation .............................. 7
Front Panel Features......................................... 7
Setting Input Level........................................... 8
Setting Bass and Treble .................................... 8
Remote Control Options .................................. 9
Specifications.........................................10
Parts and Accessories ............................12
Included Parts................................................ 12
Optional Accessories...................................... 13
Mounting................................................14
Plenum Placement ......................................... 14
Tabletop Placement........................................ 14
Rack Mounting.............................................. 15
UL Guidelines For Rack Mounting .............. 15
Rack Mounting Procedure.......................... 16
Under-desk Mounting.................................... 16
Through-desk Mounting ................................ 16
Projector Mounting........................................ 16
MPA 401-70V and MPA 401-100V • Contents
v
MPA 401-70V and MPA 401-100V • Contents
vi
Introduction
This guide contains information about the Extron MPA 401-70V and MPA 401-100V mini
power amplifiers with instructions for experienced installers on how to install, configure,
and operate the equipment. Unless otherwise specified, references in this guide to the
“amplifier,” “MPA,” or “MPA 401” relate to the features or operation of either amplifier.
MPA 401-70V and MPA 401-100V Description
The Extron MPA 401-70V and MPA 401-100V integrated mini power amplifiers provide
mono amplification for speaker systems that require compact and economical audio
solutions. Both amplifiers accept balanced or unbalanced, stereo or mono inputs and
provide a summed mono output. The MPA 401-70V delivers up to 40 watts (rms) for a
high-impedance, 70 V distributed sound system. The MPA 401-100V delivers up to 40
watts (rms) for a high-impedance, 100 V distributed sound system.
Front panel controls allow easy adjustment of bass, treble, and input levels. Volume can be
controlled remotely by the Extron VCM 100, VC 50, or MLA VC 10.
Both amplifiers feature high efficiency, Class D amplifier design with advanced CDRS™
(Class D Ripple Suppression) technology that eliminates EMI emissions and interference
with sensitive A/V equipment. The design allows the amplifiers to be fanless and operate
in environments with little or no ventilation. Both amplifiers meet UL 2043 for smoke and
fire code for above-the-ceiling installations.
Extron
SI 3CT LP
Full-Range
Ceiling Speakers
Extron VC 50
Volume Controller
VOLUME
0
5
C
V
n
o
r
t
x
E
Extron
MLC 104 IP Plus
Controller
1
Y
A
DISPL
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401-70V
F
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MP
3
ON
T
CLASS
2
WIRING
OUTPUT
70V
DO NOT GROUND
OLUME
OR SHOR
V
S
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50mA
®
SPEAKER OUTPUTS!
CONFIG
D
E
T
IS
10V
L
T
O
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VOL/MUTE
7
D
1
I
A
/
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S
IO
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P
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R
A
P
A
A
MLC 104 IP
INPUTS
(MONO)
REMOTE
R
L
(MONO)
L
POWER
R
X
12V
1.5A MA
Extron
MPA 401
Mini Power
Ampliꢀer
RS-232
N
O
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B
/B
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/Y
RESET
P
P
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CT
A
R
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ID
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C
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-Y
,B
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-
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B
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3
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2
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1
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UDIO
A
R
4
L
R
3
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INPUTS
R
2
A
L
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0V
R
24
0-
1
10
L
Extron
DVS 304 DVI AD
Digital Video
Scaler
Flat Panel
Display
(DVI)
Audio
w/ Audio
R
VE
EI
EC
R
BS
D
Laptop
(RGB)
VCR
(Video)
DVD
(Component)
DSS Receiver
(S-video)
Figure 1. Typical Application for the MPA 401
MPA 401-70V and MPA 401-100V • Introduction
1
MPA 401-70V and MPA 401-100V Features
Patented CDRS (Class D Ripple Suppression) — CDRS is an Extron patented
technology that eliminates high frequency switching ripple and EMI emissions found in
all Class D amplifiers. CDRS dramatically improves audio performance over conventional
Class D amplifier designs and enables Extron power amplifiers to be situated near wireless
A/V devices without RF interference.
UL 2043 plenum rated — The amplifiers meet UL 2043 for smoke and heat release for
installation within a plenum airspace above a drop ceiling. Above-the-ceiling placement
conceals the amplifier to prevent theft and is convenient for installing equipment when
space inside the room is limited.
Balanced and unbalanced buffered audio inputs — Both amplifiers accept balanced
or unbalanced, stereo or mono audio input signals on a captive screw connector, and
unbalanced audio on both RCA connectors and a 3.5 mm stereo mini jack.
NOTE: The amplifiers mix all right channel inputs to a single signal and all left channel
inputs to a second signal. The right signal and left signal are then summed to
produce a mono signal.
The three stereo inputs are individually buffered and can be connected to three separate
sources at the same time without altering performance.
Quick-plug speaker outputs — Speaker output is on a 5 mm screw lock captive screw
connector for quick installation.
ENERGY STAR® qualified amplifier — The MPA 401-70V and MPA 401-100V amplifiers
are ENERGY STAR qualified amplifier and energy efficient products that conserve energy
and reduce costs.
Auto-standby with fast power up — automatically places the amplifiers into standby
after 25 minutes of inactivity. They quickly return to full power status in less than one
second upon signal detection. The amplifiers consume just 6 watts when idle and less than
1 watt in standby mode.
Front panel bass, treble, and input level controls — Bass, treble, and input level are
easily adjusted from the front panel.
Fanless design — The amplifiers do not require fans or vents for cooling, ensuring quiet,
reliable operation.
Automatic clip limiter — Detects actual onset of clipping by comparing input and output
waveforms. Gain is automatically reduced with a slow attack and fast release to eliminate
clipping. This advanced limiter design protects the speakers from clipping distortion and
offers superior sonic characteristics compared to limiters that use signal compression.
Remote volume and mute control port — A rear panel, three-pin captive screw remote
input connector allows remote adjustment of volume and muting. In basic installations
without third-party control systems, this port allows the amplifiers to be remotely
controlled using the optional Extron VCM 100 series analog volume and mute controller or
VC 50 analog volume controller.
Compact size — The 1U, quarter rack width, 6 inch deep metal enclosure, offers flexible
mounting options.
MPA 401-70V and MPA 401-100V • Introduction
2
Rear Panel and
Cabling
This section describes the rear panel features and cabling of the MPA 401-70V and
MPA 401-100V.
z
z
z
z
z
Rear Panel Cabling
The illustration below shows the rear panel of the amplifiers:
CLASS 2 WIRING
MPA 401-70V
INPUTS
(MONO)
®
US
DO NOT GROUND
OR SHORT
LISTED
17TT
SPEAKER OUTPUTS!
AUDIO/VIDEO
APPARATUS
L
10V
50mA
OUTPUT
POWER
VOL/MUTE
R
12V
1.5A MAX
REMOTE
R
L (MONO)
70V
3
4
6
1
2
5
CLASS 2 WIRING
MPA 401-100V
INPUTS
®
US
DO NOT GROUND
OR SHORT
LISTED
17TT
SPEAKER OUTPUTS!
(MONO)
AUDIO/VIDEO
APPARATUS
L
10V
50mA
OUTPUT
POWER
VOL/MUTE
R
12V
1.5A MAX
REMOTE
R
L (MONO)
100V
3
4
6
1
2
5
Figure 2. MPA 401-70V and MPA 401-100V Rear Panel Features
MPA 401-70V and MPA 401-100V • Rear Panel and Cabling
3
Power Input
a Power connector — The MPA 401-100V ships with an Extron 36 W desktop power
supply (PS 1230 [part number 70-769-01]). The MPA 401-70V ships with either
the Extron 36 W desktop power supply or the Extron 12 VDC, 5 A power supply
(EPS 1250 C [part number 70-725-01]).
When using the EPS 1250 C power supply, connect the two pole, 3.5 mm captive
screw connector from the power supply to the power socket on the rear panel of the
MPA 401-70V, as shown below in figure 3. Ensure the connections have the correct
polarity as shown.
CAUTION: Always use a power supply supplied or specified by Extron. Use
of an unauthorized power supply voids all regulatory compliance
certification and may cause damage to the supply and the end
product.
Unless otherwise stated, the AC/DC adapters are not suitable for
use in air handling spaces or in wall cavities. The power supply is
to be located within the same vicinity as the Extron A/V processing
equipment in an ordinary location, Pollution Degree 2, secured to the
equipment rack within the dedicated closet, podium or desk.
The installation must always be in accordance with the applicable
provisions of National Electrical Code ANSI/NFPA 70, article 75
and the Canadian Electrical Code part 1, section 16. The power
supply shall not be permanently fixed to building structure or similar
structure.
NOTES: The length of the exposed wires in the stripping process is critical. The
ideal length is 3/16 inches (5 mm). Any longer and the exposed wires may
touch, causing a short circuit between them. Any shorter and the wires
can be easily pulled out even if tightly fastened by the captive screws.
Do not tin the wires. Tinned wire does not hold its shape and can become
loose over time.
12V
MAX
1.5
A
Smooth
Ridges
MPA 401-70V
A
A
POWER
Power Receptacle
3/16"
(5 mm) Max.
SECTION A–A
Power Supply
Output Cord
12V
1.5 A MAX
DC Power Cord
Captive Screw Connector
Ground
+12 VDC
EPS 1250 C
Power Supply
(12 VDC, 5 A )
AC Power Cord
Figure 3. Connecting the EPS 1250 C Power Supply to the MPA 401-70V
MPA 401-70V and MPA 401-100V • Rear Panel and Cabling
4
When using the PS 1230 power supply with either amplifier, connect one end of the
DC power cord to one of the two pole, 3.5 mm captive screw connectors on the
power supply. Connect the other end into the power socket on the rear panel of the
amplifier, as shown in figure 4 below. The power cord connectors are already correctly
wired when shipped.
CAUTION: When the PS 1230 power supply is connected to the MPA 401, it
must not be shared with any other devices.
PS 1230 Power Supply
MPA 401 series
Amplifier
AC Power Cord
POWER
Power Receptacle
DC Power
Outputs
12V
1.5 A MAX
DC Power Cord
Captive Screw Connector
Captive Screw
Connector
Tie
Wrap
Power Supply
Output Cord
Figure 4. Connecting the PS 1230 Power Supply to an MPA 401 Amplifier
INPUTS
b
Audio Inputs
(MONO)
c
d
L
Use the rear panel connections (see figure at right) to
connect audio inputs to the amplifier. Wire the connectors
as shown below. The balloon numbers refer to figure 2.
R
R
L (MONO)
Tip (+)
b RCA input connectors — These connectors accept
unbalanced, line level audio signals. The input can be stereo
(using two RCA jacks) or mono (using a single RCA jack
plugged into the left/mono socket).
Sleeve (
)
RCA Connector
If unused, the connectors automatically terminate to lower the
noise floor.
Tip (L)
Ring (R)
c 3.5 mm stereo input — This input also accepts unbalanced,
line level audio signals through a 3.5 mm tip ring sleeve (TRS)
stereo jack. If unused, the connector automatically terminates
to lower the noise floor.
Sleeve (
)
3.5 mm TRS Connector
Tip
Ring
Sleeve (s)
Tip
Sleeve
d Balanced or unbalanced audio
input connector — This 5-pole
3.5 mm captive screw connector
accepts line level, balanced or
unbalanced, mono or stereo audio
signals. See the notes on page 4
for important information about
connecting wires to captive screw
connectors.
Tip
Ring
Tip
Sleeve
Balanced Stereo Input
Unbalanced Stereo Input
(high impedance)
(high impedance)
Tip
Ring
Sleeve
Tip
Sleeve
Unbalanced Mono Input
Balanced Mono Input
MPA 401-70V and MPA 401-100V • Rear Panel and Cabling
5
Remote Input Connector
e Remote input connector (see figure 2) — This 3-pole captive screw connector
allows the option of using a wall-mounted audio controller or MediaLink product to
control volume and mute levels remotely.
Options for remote control include the Extron VC 50, VCM 100 AAP, VCM 100 MAAP,
or MLA VC10. Third party 10k potentiometer volume controllers can also be
connecting wires to captive screw connectors.
10 V
Wire the remote control connector to the
VCM 100 MAAP as shown in the figure at right
and instructions below:
2K
Volume Pot
Vol/Mute
10K Ohms
Mute
Switch
z
Pin 1 is 10 VDC reference voltage.
Pin 2 (VOL/MUTE) has two functions:
GND
z
z
z
It can be used as a variable voltage input. The volume control DC voltage
range is 0 to 10 V, with 0 V giving full attenuation and 10 V giving maximum
volume.
It can be used for remote control muting. Sound is muted while the mute pin
is shorted to ground.
z
Pin 3 is ground.
NOTE: All nominal levels are at 10%
Speaker Connections
f Speaker connection (see figure 2) — Connect the speakers
to this socket using the 2-pole, 5 mm screw-lock captive screw
connector (shown at right).
OUTPUT
The three left channel inputs (RCA, TRS and captive screw)
are summed to form Left Sum, with weightings proportional to their respective
sensitivities. Similarly the three right channel inputs are summed to form a Right Sum.
Left Sum and Right Sum are mixed and amplified to provide one high voltage, mono
output. The MPA 401-70V provides up to 40 W for a 70 V line distributed sound
system; the MPA 401-100V provides up to 40 W for a 100 V line distributed sound
system.
captive screw connectors.
CAUTION: Do not short the + and - outputs to each other or to ground ( ) as
this will damage the amplifier.
MPA 401-70V and MPA 401-100V • Rear Panel and Cabling
6
Setup and
Operation
This section provides information about the front panel features and operation of the
MPA 401-70V and MPA 401-100V:
z
z
z
z
Front Panel Features
The front panels of the MPA 401-70V and MPA 401-100V are identical and shown below:
2
LEVEL
BASS
TREBLE
1
MPA 401
MINI POWER AMPLIFIER
Figure 5. MPA 401-70V or MPA 401-100V Front Panel
a Power LED — The green LED is on when the MPA 401 unit is receiving power and
active. It is amber when the unit is on standby.
b Potentiometers — These three front panel potentiometers are used to optimize level,
bass, and treble settings (see the following pages for further details).
MPA 401-70V and MPA 401-100V • Setup and Operation
7
Setting Input Level
LEVEL
BASS
TREBLE
Adjust the input level as follows:
1. If necessary, unplug the remote plug from the unit.
MPA 401
MINI POWER AMPLIFIER
2. If connecting the amplifier to a system with
adjustable volume, set the volume to its lowest point.
Then adjust the level potentiometer fully counterclockwise to its minimum setting.
3. Set the system volume to its maximum level. No sound should come out.
4. Slowly increase the amplifier level until sound distortion starts to occur. Lower the level
slightly until the distortion disappears. This setting ensures that, whatever the system
volume setting may be, no clipping occurs.
Setting Bass and Treble
Adjust the bass and treble as follows:
1. Use the bass potentiometer to increase or decrease the bass shelving 10 dB at
100 Hz and below.
2. Use the treble potentiometer to increase or decrease the treble shelving 10 dB at
10 kHz and above.
NOTE: Turning the bass or treble potentiometers counterclockwise will decrease the
output at the specified frequencies. Turning the potentiometers clockwise
will increase the output. When the potentiometer is at the center detent, flat
response is achieved.
MPA 401-70V and MPA 401-100V • Setup and Operation
8
Remote Control Options
Extron
Extron
VCM 100 AAP
Volume/Mute Controller
SI 3CT LP
Full-Range
Ceiling Speakers
a
MUTE
OLUME
V
VCM 100 AAP
Extron
b MLC 104 IP Plus
Controller
1
2
Y
DISPL
A
401-70V
F
OF
MP
3
4
ON
T
CLASS
2
WIRING
OUTPUT
70V
DO NOT GROUND
OLUME
OR SHOR
V
S
U
50mA
®
SPEAKER OUTPUTS!
CONFIG
D
E
T
IS
10V
L
T
I
O
T
E
VOL/MUTE
7
D
1
/V
S
U
IO
T
D
A
R
U
A
A
P
P
A
MLC 104 IP
INPUTS
(MONO)
REMOTE
R
L
(MONO)
L
POWER
R
X
12V
1.5A MA
Extron
MPA 401
Mini Power
Ampliꢀer
RS-232
N
O
LA
B
/B
-Y
U
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G
/Y
RESET
P
INK
U
CT
R
T
-Y
/R
ID
/V
C
/Y
-Y
,B
,Y
-
Y
/R
B
G
R
R-Y
/
C
Y
/VID
4
SDI
YC
I
N
N
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3
P
U
U
P
I
2
T
T
1
T
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P
T
R
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UDIO
A
R
4
L
R
3
L
INPUTS
R
2
A
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L
V
R
0
4
-2
1
0
0
1
L
Extron
z
0
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0
DVS 304 DVI AD
Digital Video
Scaler
Flat Panel
Display
(DVI)
Audio
w/ Audio
R
E
IV
E
C
E
R
S
B
D
Laptop
(RGB)
VCR
(Video)
DVD
(Component)
DSS Receiver
(S-video)
Figure 6. MPA 401 Remote Control Options
1. Extron VCM 100 AAP volume and mute control — For a system designed to
control the volume of the amplifier directly, use a 10k Ohm potentiometer to control
volume via the remote port on the amplifier. Follow the instructions in the product
guide.
2. Using a MediaLink™ Controller — For a system with variable audio output,
connect the audio output to the audio input of the amplifier. In the above example, a
MediaLink controller adjusts the audio volume via a network connection. Follow the
instructions in the product guide.
MPA 401-70V and MPA 401-100V • Setup and Operation
9
Specifications
Audio
Voltage gain
MPA 401-70V
RCA and TRS inputs........... 222x (47 dB)
Captive screw input ........... 57x (35 dB)
MPA 401-100V
RCA and TRS inputs........... 317x (50 dB)
Captive screw input ........... 81x (38 dB)
CMRR ............................................ 75 dB (typical) @ 1 kHz
Bass adjustment ............................. 10 dB @ 100 Hz
Treble adjustment........................... 10 dB @ 10 kHz
Audio input
Number/signal type ........................ 1 stereo/mono, balanced/unbalanced input
2 stereo/mono, unbalanced inputs
(The three inputs are individually buffered and mixed together. Stereo signals
are actively summed into a mono signal.)
Connectors .................................... (1) 3.5 mm captive screw connector, 5 pole (main input)
(1) 3.5 mm mini audio jack (tip, ring, sleeve)
1 pair RCA
Impedance ..................................... >10k ohms balanced/unbalanced, DC coupled
Maximum level............................... +20 dBu (balanced, captive screw) or +4 dBV (unbalanced, RCA/TRS) at
1% THD+N
Input sensitivity
RCA and TRS inputs................. -10 dBV if driven by one input
-16 dBV if both inputs are summed
Captive screw input ................. +4 dBu if driven by one input
-2 dBu if both inputs are summed
NOTE: 0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu
Audio output
Number/signal type
MPA 401-70V.......................... 1 single channel (mono) 70 V
MPA 401-100V........................ 1 single channel (mono) 100 V
Connectors .................................... (1) 5 mm screw lock captive screw connector, 2 pole
Load impedance
MPA 401-70V.......................... 125 ohms minimum
MPA 401-100V........................ 250 ohms minimum
Frequency response........................ 80 Hz to 20 kHz, +1 dB/-3 dB, 1 watt
THD + Noise................................... <0.2% @ 1 kHz at 3 dB below clipping
S/N................................................. >75 dB, 20 Hz to 20 kHz, unweighted
Damping factor.............................. >100
High pass filter ............................... 80 Hz, 12 dB/octave roll off
Amplifier type ................................ Class D
MPA 401-70V and MPA 401-100V • Specifications
10
Output power
MPA 401-70V.......................... 40 watts (rms), 70 V, 1 kHz, 1% THD
MPA 401-100V........................ 40 watts (rms), 100 V, 1 kHz, 1% THD
Control/remote — amplifier
Control port................................... (1) 3.5 mm captive screw connector, 3 pole
Pin configuration............................ Pin 1 = +10 VDC (50 mA max.), pin 2 = volume/mute control (variable voltage),
pin 3 = GND
Volume control voltage range......... 0 V (mute) to 10 V (maximum volume)
General
External power supply.................... 100 VAC to 240 VAC, 50-60 Hz, external; to 12 VDC, 3 A (min.), regulated
Power input requirements .............. 12 VDC, up to 5 A
Power consumption ....................... For amplifier and external power supply
Typical ..................................... 13 W (1/8 power, pink noise, at 125 ohms)
Quiescent ................................ 8 watts
Standby................................... <1 watt (triggered by contact closure or after 25 minutes [ 5 minutes] with no
signal)
Temperature/humidity .................... Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing
Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing
Cooling.......................................... Convection, no vents
Thermal dissipation
Standby................................... <1 watt (3 BTU/hr)
Idle.......................................... 6 watts (21 BTU/hr)
1/8 power, pink noise .............. 8 watts (28 BTU/hr)
Mounting
Rack mount............................. Yes, with optional 1U rack shelf or back of rack mounting kit
Furniture mount ...................... Yes, with optional under-desk mounting kit
Pole mount.............................. Yes, with optional pole mounting kit
Enclosure type................................ Metal
Enclosure dimensions ..................... 1.7" H x 4.3" W x 6.0" D (1U high, quarter rack wide)
(4.3 cm H x 10.9 cm W x 15.2 cm D)
(Depth excludes connectors.)
Product weight............................... 0.6 lbs (0.3 kg)
Shipping weight............................. 3 lbs (2 kg)
Vibration........................................ ISTA 1A in carton (International Safe Transit Association)
Regulatory compliance
Safety...................................... CE, c-UL, UL
UL rated for use in plenum airspaces: meets UL 2043 for heat and smoke
release, excluding the power supply; meets UL 60065 and IEC 60065 for A/V
equipment safety.
EMI/EMC ................................. CE, C-tick, FCC Class B, ICES Class B, VCCI
Environmental
MPA 401-70V .................... Complies with the appropriate requirements of CEC, ENERGY STAR® (ENERGY
STAR® qualified amplifier), EU code of conduct, RoHS, WEEE
MPA 401-100V .................. Complies with the appropriate requirements of CEC, EU code of conduct, RoHS,
WEEE
MTBF ............................................. 30,000 hours
Warranty........................................ 3 years parts and labor
NOTES: All nominal levels are at 10%
Specifications are subject to change without notice.
MPA 401-70V and MPA 401-100V • Specifications
11
Parts and
Accessories
This section of the user guide contains information about:
z
z
Included Parts
Description
Part Number
MPA 401-70V
or
60-845-01
MPA 401-100V
60-845-11
70-725-01
EPS 1250 C External 12 VDC, 5 A power supply
(MPA 401-70V)
or
PS 1230 External 36 W power supply
(MPA 401-70V and MPA 401-100V)
70-769-01
IEC power cord
(1) 2-pole 5 mm terminal block plug
(1) 5-pole 3.5 mm captive screw plug
(1) 3-pole 3.5 mm captive screw plug
(1) 2-pole 3.5 mm power captive screw plug
Tweeker (small screwdriver)
MPA 401-70V and MPA 401-100V Setup Guide
MPA 401-70V and MPA 401-100V • Parts and Accessories
12
Optional Accessories
Description
Part Number
60-190-10
60-604-11
60-190-01
60-604-02
70-077-01
70-077-02
70-563-03
70-725-01
70-769-01
70-530-02
70-396-11
70-397-11
60-502-01
60-1090-01
42-103-03
42-070-03
42-120-13
42-141-03
22-152-03
22-155-03
22-151-03
22-154-03
22-150-03
22-153-03
RSU 126 1U, 6 inch deep, universal rack kit
RSB 126 1U, 6 inch deep basic rack shelf
RSU 129 1U, 9.5 inch deep, universal rack kit
RSB 129 1U, 9.5 inch deep basic rack shelf
MBU 125 Under-desk mounting kit
MBD 129 Through-desk mounting kit
PMK 350 Pole mount kit
EPS 1250 C External power supply replacement kit
PS 1230 External 36 W power supply replacement kit
VC 50 Volume control wall plate
VCM 100 AAP Volume/mute - AAP
VCM 100 MAAP Volume/mute - MAAP
MLA-VC10 Volume control module
MLA VC10 Plus Volume control module
SI 3CT LP Ceiling speakers
SI 26 CT Ceiling speakers
FF 120 T Ceiling speakers
FF 220 T Ceiling speakers
SPK14/1000 Non-Plenum 1000 feet (300 m) spool
SPK14P/1000 Plenum 1000 feet (300 m) spool
SPK16/1000 Non-Plenum 1000 feet (300 m) spool
SPK16P/1000 Plenum 1000 feet (300 m) spool
SPK18/1000 Non-Plenum 1000 feet (300 m) spool
SPK18P/1000 Plenum 1000 feet (300 m) spool
MPA 401-70V and MPA 401-100V • Parts and Accessories
13
Mounting
This section outlines the various mounting options available for the MPA 401 series
amplifiers:
z
z
z
z
z
z
Plenum Placement
The MPA 401-70V and MPA 401-100V amplifiers meets UL 2043 requirements for heat
and smoke release. They can be installed in the ceiling, out of sight, with reduced risk of
theft.
CAUTION: 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 also be plenum rated.
Tabletop Placement
Attach the four provided rubber feet to the bottom of the unit and place it in any
convenient location.
MPA 401-70V and MPA 401-100V • Mounting
14
Rack Mounting
UL Guidelines For Rack Mounting
The following Underwriters Laboratories (UL) guidelines are relevant to the safe installation
of these products in a rack:
1. Elevated operating ambient temperature — If the unit is installed in a closed or
multi-unit rack assembly, the operating ambient temperature of the rack environment
may be greater than room ambient temperature. Therefore, install the equipment in
an environment compatible with the maximum ambient temperature (Tma: +122 °F,
+50 °C) specified by Extron.
2. Reduced air flow — Install the equipment in the rack so that the equipment gets
adequate air flow for safe operation.
3. Mechanical loading — Mount the equipment in the rack so that uneven mechanical
loading does not create a hazardous condition.
4. Circuit overloading — Connect the equipment to the supply circuit and consider the
effect that circuit overloading might have on overcurrent protection and supply wiring.
Appropriate consideration of the equipment nameplate ratings should be used when
addressing this concern.
5. Reliable earthing (grounding) — Maintain reliable grounding of rack-mounted
equipment. Pay particular attention to supply connections other than direct
connections to the branch circuit (such as the use of power strips).
CAUTION: Use only the two holes indicated in figure 7 for mounting the MPA 401.
The other four holes anchor stand-offs for the internal circuit boards;
using them may damage the amplifier and will not provide secure
mounting for the unit.
#4-40 Thread Thru
Rack Mounting
#4-40 Thread Thru
Rack Mounting
Figure 7. Points for Securing the Base of the MPA 401 to a Rack
MPA 401-70V and MPA 401-100V • Mounting
15
Rack Mounting Procedure
The unit can be mounted on any of these optional Extron rack systems:
z
z
z
z
RSU 126: 6 inch deep, 1U rack shelf kit (part number 60-190-10)
RSB 126: 6 inch deep, 1U basic rack shelf (part number 60-604-11)
RSU 129: 9.5 inch deep, 1U rack shelf kit (part number 60-190-01)
RSB 129: 9.5 inch deep, 1U basic rack shelf (part number 60-604-02)
To mount the amplifier on a rack shelf, follow the instructions provided with the shelf
accessories.
Under-desk Mounting
Mount the unit under a desk or podium, using the optional Extron MBU 125 under-desk
mounting kit (part number 70-077-01) by following the instructions provided with the kit.
Through-desk Mounting
Mount the unit through a desk or podium using the optional Extron MBD 129 through
desk mounting kit (part number 70-077-02) by following the instructions provided with
the kit.
Projector Mounting
The amplifier can be mounted above a projector using the optional PMK 350 Pole mount
kit (part number 70-563-03). Follow the instructions provided with each kit.
MPA 401-70V and MPA 401-100V • Mounting
16
Extron® Warranty
Extron Electronics warrants this product against defects in materials and workmanship for a period of
three years from the date of purchase; touchscreen display and overlay components are covered for 1
year. In the event of malfunction during the warranty period attributable directly to faulty workmanship
and/or materials, Extron Electronics will, at its option, repair or replace said products or components, to
whatever extent it shall deem necessary to restore said product to proper operating condition, provided
that it is returned within the warranty period, with proof of purchase and description of malfunction to:
USA, Canada, South America,
and Central America:
Extron Electronics
1001 East Ball Road
Anaheim, CA 92805
U.S.A.
Japan:
Extron Electronics, Japan
Kyodo Building, 16 Ichibancho
Chiyoda-ku, Tokyo 102-0082
Japan
Europe, Africa, and the Middle East:
Extron Europe
Hanzeboulevard 10
3825 PH Amersfoort
The Netherlands
China:
Extron China
686 Ronghua Road
Songjiang District
Shanghai 201611
China
Asia:
Middle East:
Extron Asia
Extron Middle East
135 Joo Seng Road, #04-01
PM Industrial Bldg.
Singapore 368363
Singapore
Dubai Airport Free Zone
F12, PO Box 293666
United Arab Emirates, Dubai
This Limited Warranty does not apply if the fault has been caused by misuse, improper handling care,
electrical or mechanical abuse, abnormal operating conditions, or modifications made to the product that
were not authorized by Extron.
NOTE: If a product is defective, please call Extron and ask for an Application Engineer to receive an RA
(Return Authorization) number. This will begin the repair process.
USA: (714) 491-1500
Asia: +65.6383.4400
Europe:
Japan:
+31.33.453.4040
+81.3.3511.7655
Units must be returned insured, with shipping charges prepaid. If not insured, you assume the risk of
loss or damage during shipment. Returned units must include the serial number and a description of the
problem, as well as the name of the person to contact in case there are any questions.
Extron Electronics makes no further warranties either expressed or implied with respect to the product
and its quality, performance, merchantability, or fitness for any particular use. In no event will Extron
Electronics be liable for direct, indirect, or consequential damages resulting from any defect in this
product even if Extron Electronics has been advised of such damage.
Please note that laws vary from state to state and country to country, and that some provisions of this
warranty may not apply to you.
Extron USA - West
Extron USA - East
Extron Europe
Extron Asia
Extron Japan
Extron China
Extron Middle East
Headquarters
+81.3.3511.7655
+81.3.3511.7656 FAX
+971.4.2991800
+971.4.2991880 FAX
+800.7339.8766
Inside Asia Only
+400.883.1568
Inside China Only
+800.633.9876
Inside USA/Canada Only
+800.633.9876
Inside USA/Canada Only
+800.3987.6673
Inside Europe Only
+65.6383.4400
+65.6383.4664 FAX
+86.21.3760.1568
+86.21.3760.1566 FAX
+1.714.491.1500
+1.714.491.1517 FAX
+1.919.863.1794
+1.919.863.1797 FAX
+31.33.453.4040
+31.33.453.4050 FAX
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