Monoprice 18803, 14886, 18805 User Manual
Commercial Audio 5-Channel
70V/100VMixer Amplifier with Microphone Priority
PROT OUTPUT LEVELTEMP
2
468
1 0 1 2
POWER
MIC 1 MIC 2 MIC 3 AUX 1 AUX 2 BASS TREBLE
MIC 1
5
4 6
3
2
1
4 6
7
3
8
2
9
1
0
10
0
5
4 6
3
7
2
8
1
9
0
10
P/N 18803
P/N 14886
P/N 18805
5
5
5
4 6
7
8
9
0
10
4 6
3
2
1
0
|
60-Watt
|
120-Watt
|
240-Watt
7
3
8
2
9
1
10
0
-1 +1
-5
+2
+3
+4
+50-5
-1 +1
-2
-3
-4
7
-2
8
-3
9
-4
10
MASTER
5
4 6
3
+2
+3
+4
+5
7
2
1
9
0
10
ON
8
OFF
User’s Manual
CONTENTS
SAFETY WARNINGS AND GUIDELINES ............................................................................................................................... 3
INTRODUCTION ........................................................................................................................................................................................ 4
FEATURES ...................................................................................................................................................................................................... 5
PACKAGE CONTENTS ......................................................................................................................................................................... 5
PRODUCT OVERVIEW ......................................................................................................................................................................... 6
Front Panel ............................................................................................................................................................................................. 6
Rear Panel ............................................................................................................................................................................................... 7
CONSTANT VOLTAGE VS LOW IMPEDANCE SPEAKER SYSTEMS .............................................................. 8
WIRE PREPARATION ............................................................................................................................................................................ 9
INSTALLATION AND SETUP ......................................................................................................................................................... 10
INSTALLATION NOTES ..................................................................................................................................................................... 13
FUNCTIONAL BLOCK DIAGRAM ............................................................................................................................................. 14
SPECIFICATIONS .................................................................................................................................................................................... 15
REGULATORY COMPLIANCE ...................................................................................................................................................... 16
Notice for FCC .................................................................................................................................................................................. 16
Notice for Industry Canada ................................................................................................................................................... 16
2
SAFETY WARNINGS AND GUIDELINES
Do not install this device on an unstable surface where it could fall and cause
either personal injury or damage to the device and/or other equipment.
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 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.
Disconnect the unit from the power source when replacing the fuse. Replace the
fuse only with the same type.
Unplug this device from the power source when not in use.
3
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 or adapter body.
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.
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 (18803), 96 (14886), or 192 (18805) watts, depending on
model
Because high voltage is present on the 70V and 100V speaker output terminals,
always use the included terminal cover to prevent electric shock from accidental
contact.
INTRODUCTION
Thank you for purchasing this 5-Channel 70V/100V Mixer Public Address Amplifier!
This amplifier features three microphone inputs and two auxiliary inputs, each of which
is active and mixed into the line and speaker level outputs. When an EMC input trigger
is detected, all outputs except MIC 1 are muted, allowing for the clear broadcast of
important messages. The amplifier can drive a speaker array consisting of one or more
speakers presenting a 4~16 ohm load or to one or more 70V or 100V speakers
connected in parallel as part of a large public address system.
4
FEATURES
5-channel (3 microphone and 2 line) mixer/amplifier
Amplifier rated for 60 (18803), 120 (14886), or 240 (18805) watts
70V, 100V, and low impedance 4~16 ohm speaker output options
Built-in rack mount ears and 2U height for mounting in a standard 19" equipment
rack
Unbalanced front panel input for MIC 1
Both balanced XLR and unbalanced TRS and RCA rear panel inputs for MIC 2 and
MIC 3
Phantom power option for MIC 2 and MIC 3
Two unbalanced RCA auxiliary/line inputs
One EMC priority input
Master volume, bass, and treble controls
Front panel level controls for all inputs
0-30dB variable muting for all channels except MIC 1 when MIC 1 is in use
Built-in short circuit, over-current, and high temperature protection circuits
Line level output of mixed signal for connection to other devices
PACKAGE CONTENTS
Please take an inventory of the package contents to ensure you have all the items listed
below.
1x 5-channel 70V/100V mixer public address amplifier
1x AC power cable (NEMA 5-15 to IEC 60320 C13)
1x User's manual
5
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