Monoprice 18800 User Manual
Commercial Audio 60-Watt 2-Channel
70V/100V Mixer Amplifier
P/N 18800
User’s Manual
CONTENTS
SAFETY WARNINGS AND GUIDELINES ............................................................................................................................... 3
INTRODUCTION ........................................................................................................................................................................................ 5
FEATURES ...................................................................................................................................................................................................... 5
CUSTOMER SERVICE ............................................................................................................................................................................ 5
PACKAGE CONTENTS ......................................................................................................................................................................... 6
PRODUCT OVERVIEW ......................................................................................................................................................................... 6
Front Panel ............................................................................................................................................................................................. 6
Rear Panel ............................................................................................................................................................................................... 7
CONSTANT VOLTAGE VS 8-OHM SPEAKER SYSTEMS .......................................................................................... 7
SAMPLE CONNECTION DIAGRAM .......................................................................................................................................... 9
CONSTANT RESISTANCE INSTALLATION .......................................................................................................................... 9
CONSTANT VOLTAGE INSTALLATION ................................................................................................................................ 11
BLOCK DIAGRAM ................................................................................................................................................................................. 13
SPECIFICATIONS .................................................................................................................................................................................... 14
TECHNICAL SUPPORT ....................................................................................................................................................................... 15
REGULATORY COMPLIANCE ...................................................................................................................................................... 15
Notice for FCC .................................................................................................................................................................................. 15
Notice for Industry Canada ................................................................................................................................................... 16
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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 place drinks
or other containers with moisture on or near the device. If moisture does get in
or on the device, immediately unplug it from the power outlet and allow it to
fully dry before reapplying power.
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.
This device ventilates excessive heat through the slots and openings in the case.
Do not block or cover these openings. Ensure that the device is in an open area
where it can get sufficient airflow to keep from overheating.
Do not expose this device to excessive vibration.
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.
Use only in a well-ventilated area. Do not use in close, confined spaces.
Prior to operation, check the unit and power cord for physical damage. Do not
use if physical damage has occurred.
Before plugging the unit into a power outlet, ensure that the outlet provides the
same type and level of power required by the device.
This device uses a grounded power cord and requires a ground connection for
safe operation. Ensure that the power source has a proper ground connection.
Do not modify the plug or use a "cheater" plug to bypass the ground connection.
Unplug this device from the power source when not in use.
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Take care to prevent damage to the power cord. Do not allow it to become
crimped, pinched, walked on, or become tangled with other cords. Ensure that
the power cord does not present a tripping hazard.
Never unplug the unit by pulling on the power cord. Always grasp the connector
head.
Ensure that power is turned off and disconnected before making any electrical
connections.
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.
Ensure that the terminal cover is installed over the speaker terminals before
applying power. These terminals carry high voltage and can cause severe electric
shock if touched during operation.
Always set the Master Volume knob to the minimum position before applying
power to the amplifier. Transient voltage spikes during power on can cause loud
popping in the speakers, which can damage the speakers.
Do not operate this amplifier for extended periods of time with audio distortion
present. Audio distortion can cause excessive heat and can damage the amplifier
and/or speakers.
If using this amplifier to drive a 70V or 100V speaker array, ensure that the total
wattage rating of the speaker array does not exceed 80% of the amplifier's rated
RMS power level, i.e., 48 watts.
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INTRODUCTION
Thank you for purchasing this Commercial Audio 60-Watt 70V/100V Mixer Amplifier!
This amplifier is designed to drive a conventional 4-ohm or 8-ohm speaker system as
well as 70-volt and 100-volt constant voltage speaker systems. It features three
unbalanced 1/4" microphone inputs, two of which can be switched to unbalanced RCA
and 1/4" auxiliary jacks instead of microphone level inputs.
FEATURES
Three 1/4" microphone inputs
One RCA and one 1/4" auxiliary inputs
Three separate mixing/volume controls for MIC 1, MIC 2/AUX 1, and MIC 3/AUX 2
Treble and bass controls
MIC 1 input has priority
4-ohm and 8-ohm constant resistance output options
70-volt and 100-volt constant voltage output options
100 ~ 240 VAC, 50/60 Hz input voltage range
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 during normal business hours (Mon-Fri: 5am-7pm PT, Sat-
Sun: 9am-6pm PT) or via email at support@monoprice.com
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