JBL MPA1100 User Manual

Power Amplifiers
MPA Series
MPA275
P r o f e s s i o n a l A m p l i f i e r
Clip
-10dB
-20dB
Signal Present
Clip
-10dB
-20dB
Signal Present
Power
Protect
1-CHANNEL-2
18
10
8
6
4
12
14
24
0
2
48
18
10
8
6
4
12
14
24
0
2
48
MPA400
P r o f e s s i o n a l A m p l i f i e r
Clip
-10dB
-20dB
Signal Present
Clip
-10dB
-20dB
Signal Present
Power
Protect
1-CHANNEL-2
18
10
8
6
4
12
14
24
0
2
48
18
10
8
6
4
12
14
24
0
2
48
MPA600
P r o f e s s i o n a l A m p l i f i e r
Clip
-10dB
-20dB
Signal Present
Clip
-10dB
-20dB
Signal Present
Power
Protect
1-CHANNEL-2
18
10
8
6
4
12
14
24
0
2
48
18
10
8
6
4
12
14
24
0
2
48
Clip
-10dB
-20dB
Signal Present
Clip
-10dB
-20dB
Signal Present
Power
Protect
1-CHANNEL-2
18
10
8
6
4
12
14
24
0
2
48
18
10
8
6
4
12
14
24
0
2
48
MPA750
P r o f e s s i o n a l A m p l i f i e r
Clip
-10dB
-20dB
Signal Present
Clip
-10dB
-20dB
Signal Present
Power
Protect
1-CHANNEL-2
18
10
8
6
4
12
14
24
0
2
48
18
10
8
6
4
12
14
24
0
2
48
MPA1100
P r o f e s s i o n a l A m p l i f i e r
Owner’s Manual
MPA275
MPA400
MPA600
MPA750
MPA1100

JBL MPA1100 Specifications

General

Power Output	1100W
Channels	1
Frequency Response	20 Hz - 20 kHz
Input Sensitivity	1.4V
8 Ohms Output Power	550W
Signal to Noise Ratio	>100dB
Input Impedance	20k Ohms

Summary

Cautions and Safety

Rack Mounting Precautions

Amplifier Installation Procedures

Input Connections Guide

Details balanced and unbalanced input connections, sensitivity, and impedance.

Speaker Output Connections

Bridged-Mono Mode Operation

Detailed instructions and cautions for operating the amplifier in bridged-mono mode.

AC Power Connection Requirements

Information on connecting the amplifier to AC power, including voltage options and safety requirements.

Amplifier Operation and Controls

Gain Controls and Lockout

LED Display Functions and Behavior

Maximum Output Power Levels

Protection Circuitry Overview

Explains various protection mechanisms like short circuit, thermal limiting, muting, and ultrasonic detection.

JBL MPA Series Specifications

Troubleshooting Common Issues

Muting and No Sound Problems

Steps to diagnose and resolve issues with channel muting or lack of audio output.

Hum Problems and Solutions

Discusses potential causes of hum in the amplifiers and suggested solutions.

Overheating and Thermal Protection

Details the thermal protection system's response to rising temperatures and potential causes of overheating.