COMMERCIAL AUDIO 36374 User manual

Commercial Audio
40 Watt Wall Mount Music Amplifier
P/N 36374
User's Manual

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SAFETY WARNINGS AND GUIDELINES
Please read this entire manual before using this device, paying
extra attention to these safety warnings and guidelines. Please
keep this manual in a safe place for future reference.
This device is intended for indoor use only.
Do not expose this device to water or moisture of any kind.
Do not touch the device, the power cord, or any other
connected cables with wet hands.
Do not expose this device to excessively high
temperatures. Do not place it in, on, or near heat sources,
such as a fireplace, stove, radiator, etc. Do not leave it in
direct sunlight.
Do not place or install this device in an area where it can
be exposed to excessive amounts of dust, humidity, oil,
smoke, or combustible vapors.
Prior to operation, check the unit for physical damage. Do
not use if physical damage has occurred.
Ensure that power is turned off and disconnected before
making any electrical connections.
Remove the battery from the controller if it will go unused
for a lengthy period of time.

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Clean using a soft, dry cloth only. Do not use chemical
cleaners, solvents, or detergents. For stubborn deposits,
moisten the cloth with warm water.
This device has no user serviceable parts. Do not attempt
to open, service, or modify this device.
Cables run through the wall must be rated for in-wall use.
FEATURES
40 watt class D differential amplifier (10 watts/channel
RMS, 20 watts/channel peak)
Includes IR remote control
Bluetooth® radio for streaming audio from a paired device
Built-in audio player compatible with wav, mp3, wva, ape,
flac, aac, aiff, and wma files on a USB flash drive or
microSD™ card
Supports up to 128GB USB drives
Supports up to 64GB microSD cards
Built-in FM radio with automatic and manual tuning and
the ability to store 20 station presets
Two AUX inputs with adjustable input sensitivity

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CUSTOMER SERVICE
The Monoprice Customer Service department is dedicated to
ensuring that your ordering, purchasing, and delivery experience
is second to none. If you have any problem with your order,
please give us an opportunity to make it right. You can contact a
Monoprice Customer Service representative through the Live
Chat link on our website www.monoprice.com or via email at
[e-mail]. Check the website for support times
and links.
PACKAGE CONTENTS
Please take an inventory of the package contents to ensure you
have all the items listed below. If anything is missing or damaged,
please contact Monoprice Customer Service for a replacement.
1x Wall mount music amplifier
1x Back box
2x Machine screws
1x IR remote control with installed CR2032 battery
1x User's manual

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PRODUCT OVERVIEW
Front Panel
Bottom Panel

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Rear Panel
1. Power: Power connector for connecting an AC power cord
(not included).
2. FM: Connector for attaching an FM antenna (not included).
3. GND: Connector for attaching the signal ground/common.
4. AUX1: Connectors for attaching the left and right channel
inputs from a line level source.
5. AUX2: Connectors for attaching the left and right channel
inputs from a line level source.
6. SPEAKER 8Ω: Connectors for attaching the left and right
channel speakers.
Remote Control
1. Standby: Press the button to turn the system on or to put
it into standby mode.
2. EQ: Press the button to cycle through the Voice, Normal,
Pop, Rock, and Jazz effects.

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3. Control Pad: The control pad consists of
five buttons, including Play/Pause,
Previous Track, Next Track, Volume Up,
and Volume Down.
4. Mode: Press the button to cycle through
the FM, USB, microSD™, Bluetooth®,
AUX1, and AUX2 inputs.
5. Mute: Press the button to turn audio muting on or off.
6. Null: Not used.
7. Play Mode: Press the button to toggle between the Repeat
All and Repeat 1 play modes. This is only available for the
USB and SD™ input modes.
8. Keypad: In SD and USB playback modes, use the keypad to
directly select the track to play.
INSTALLATION
Important! Installation of structural materials and electric wiring
should always be performed by a qualified contractor or engineer.
All cables should be rated for in-wall use.
1. Select a location for the amplifier. Ensure that there are no
obstructions behind the wall.
2. Using a drywall saw, cut a 3 5/16" x 3 5/16" (84.13 x 84.13
mm) square hole in the wall.

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3. Ensure that the power cord and audio cabling is installed in
the wall to the amplifier installation location.
4. Punch open needed holes in the back can, then pull the
cables through the hole(s). Be sure to keep the power cord
as far as possible from the audio cables.
5. Fit the back can into the hole, then use the self-tapping
screws to secure it to at least one stud or frame.
6. Select two buckles in either the A or B direction, as
indicated in the image below. Pull the outer edge of it so
that the snap is disengaged. Carefully disconnect the front
panel from the amplifier base.
7. Make all audio and control connections to the amplifier
connectors. Be sure to match polarity for all connections to
ensure proper function and quality of sound.

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8. Connect the amplifier base to the back can using the 2
included machine screws.
9. Attach the front panel to the amplifier base.
OPERATION
FM Radio
Momentarily press the Mbutton to start playing the last
station selected.
Press and hold the Play/pause button to start the
automatic channel search. When a station with a strong
enough signal is found, the amplifier will save it as a preset.
Momentarily press the Previous or Next buttons to cycle
through the saved station presets.
Press and hold the Previous and Next buttons together to
enter manual tuning mode. Momentarily press either the
Previous or Next buttons to decrease or increase the radio
frequency in 0.1MHz increments. If no buttons are pressed
within 5 seconds, the amplifier will exit manual tuning
mode.

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Momentarily press the Volume down or Volume up
buttons to adjust the volume level.
USB Mode
Insert a USB flash drive with audio files into the USB port
on the amplifier.
Momentarily press the Mbutton until Usb is visible on the
Display screen. If no USB device is connected, the display
will blink NO. If a USB device is present but no playable
audio files are found, the display will show - - - -. If audio
files are found, the display will briefly show the track
number, then will change to show the track timer.
Momentarily press the Play/pause button to pause and
resume playback.
Momentarily press the Previous or Next buttons to select
tracks.
Press and hold the Previous or Next buttons to rewind or
fast forward through the track.
SD™ Card Mode
Insert a microSD™ card into the microSD card slot on the
amplifier.

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Momentarily press the Mkey until SD is visible on the
Display screen. The system will start playing the last
selected track. If no microSD card is present, the display
will blink NO. If no readable audio files are found on the
card, the display will show - - - -. If audio files are found,
the display will briefly show the track number, then will
change to show the track timer.
Momentarily press the Play/pause button to pause and
resume playback.
Momentarily press the Previous or Next buttons to select
tracks.
Press and hold the Previous or Next buttons to rewind or
fast forward through the track.
Bluetooth® Mode
Momentarily press the Mbutton until BT is visible on the
Display screen.
Open the Bluetooth settings on your mobile device, then
scan for available Bluetooth devices. Locate and select the
MP36374 entry. If prompted for a passcode, enter 1234. If
the amplifier is not located, ensure that no other devices
are paired.
The Bluetooth symbol ( ) will flash on the Display screen
when the amplifier is ready to pair. The symbol will cease

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flashing when the amplifier is properly paired to a mobile
device.
Momentarily press the Play/pause button to pause and
resume playback.
Momentarily press the Previous or Next buttons to select
tracks.
Press and hold the Previous or Next buttons to rewind or
fast forward through the track.
AUX 1 and AUX 2 Modes
Momentarily press the Mbutton until AUX1 or AUX2 is
visible on the Display screen.
Momentarily press the Previous or Next buttons to adjust
the input sensitivity. S1 represents a 500mV input and S2
represents a 1000mV input.

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TECHNICAL SUPPORT
Monoprice is pleased to provide free, live, online technical
support to assist you with any questions you may have about
installation, setup, troubleshooting, or product recommendations.
If you ever need assistance with your new product, please come
online to talk to one of our friendly and knowledgeable Tech
Support Associates. Technical support is available through the
online chat button on our website www.monoprice.com or
through email by sending a message to t[email protected]m.
Check the website for support times and links.
SPECIFICATIONS
Model
36374
Inputs
USB, microSD™ card,
Bluetooth®, FM radio, line
level AUX 1, line level AUX 2
Bluetooth Version
2.1 + EDR
Bluetooth Pairing Name
MP36374
Bluetooth Passcode
1234
Bluetooth Range
up to 32 feet (10 meters)
Output Power (RMS)
10 watts/channel into 8 ohms

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Output Power (peak)
20 watts/channel into 8
ohms
Nominal Impedance
8 ohms
Support Audio File Formats
wav, mp3, wva, ape, flac, aac,
aiff, wma
AUX Input Sensitivity
(adjustable)
500mV/1000mV
Frequency Response
20 Hz ~ 20 kHz
Total Harmonic Distortion
≤ 0.03% (1 watt @ 1kHz into 8
ohms)
Signal-to-Noise Ratio
> 81dB
IR Remote Control Effective
Angle
±30°
IR Remote Control Effective
Range
up to 32 feet (10 meters)
IR Remote Control Battery
Type
1x CR2032
Input Power
100 ~ 240 VAC, 50/60 Hz
Dimensions
3.4" x 3.4" x 1.5"
(86 x 86 x 38 mm)

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REGULATORY COMPLIANCE
Notice for FCC
This device complies with Part 15 of the FCC rules. Operation is
subject to the following two conditions: (1) this device may not
cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause
undesired operation.
Modifying the equipment without Monoprice's authorization may
result in the equipment no longer complying with FCC
requirements for Class B digital devices. In that event, your right
to use the equipment may be limited by FCC regulations, and you
may be required to correct any interference to radio or television
communications at your own expense.
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 residential 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
interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television

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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:
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.
Radio Notice for FCC
Caution
This FCC Part 15 radio device operates on a non-interference basis
with other devices operating at this frequency. Any changes or
modification to said product not expressly approved by
Monoprice, including the use of non-approved antennas, could
void the user’s authority to operate this device.
This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) this device may not
cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause
undesired operation.

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Notice for Industry Canada
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme
NMB-003 du Canada.
Radio Notice for Industry Canada
Caution
This IC RSS-210 radio device operates on a non-interference basis
with other devices operating at this frequency. Any changes or
modification to said product not expressly approved by
Monoprice, including the use of non-approved antennas, could
void the user’s authority to operate this device.
This device complies with IC RSS-210. Operation is subject to the
following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference
received, including interference that may cause undesired
operation.
The Bluetooth® word mark and logos are registered trademarks of
Bluetooth SIG, Inc.
SD™, microSD™, and the SD logo are trademarks of SD-3C, LLC.