JBL CSMA 280 User Manual

CSMA 180
CSMA 1120
CSMA 240
CSMA 280
CSMA 2120
Commercial Series
Mixer-Amplifier
Operation Manual
CSMA Mixer-Amplifiers
CSMA Commercial Series

JBL CSMA 280 Specifications

General

Brand	JBL
Model	CSMA 280
Category	Music Mixer
Language	English

Summary

Important Safety Instructions

General Safety Warnings

Covers warnings on electrical shock, proper handling, and magnetic fields.

Power Cord and Grounding Safety

Provides instructions for power cords, grounding, and UK plug specifics.

EC - Declaration of Conformity

Safety Standards and Compliance

Specifies safety standards and product compliance details.

Representative Contact Information

Lists contact details for European and technical representatives.

1.0 Welcome

1.2 Front Panel Controls and Indicators

Front Panel Component Descriptions

Details the function of front panel controls and indicators like level, volume, power, and tone.

1.3 Rear Panel Controls and Connectors - Four Channel

Rear Panel Component Descriptions (Four Channel)

Details rear panel connectors and switches: AC inlet, outputs, HI-Z, phantom power, CSR-V, and inputs.

1.4 Rear Panel Controls and Connectors - Eight Channel

Rear Panel Component Descriptions (Eight Channel)

Details rear panel connectors and switches: AC inlet, outputs, CSR-V, DIP switches, and inputs.

2.0 Setup

2.1 Unpacking Your Amplifier

2.2 Installing Your Amplifier

Installation Guidelines

Covers general installation advice, rack mounting, and surface placement.

Solution A: Rack Mounting Two Half Rack Mixer Amplifiers

Rack Mounting Procedure (Two Units)

Step-by-step guide for rack mounting two half-rack mixer units.

Solution B: Rack Mounting Single Half Rack Mixer Amplifier

Rack Mounting Procedure (Single Unit)

Step-by-step guide for rack mounting a single half-rack mixer amplifier.

Solution C: Rack Mounting Full Rack Mixer Amplifier

Rack Mounting Procedure (Full Unit)

Step-by-step guide for rack mounting a full-rack mixer amplifier.

2.3 Ensuring Proper Cooling

2.4 Choosing Input Wire and Connectors

Input Wiring and Connectors

Guidance on selecting appropriate input wires and connectors, including diagrams.

2.5 Output Wiring and Connectors

Output Wiring Guidelines

Provides guidelines for selecting speaker wire and connecting to output terminals.

2.6 Wiring Your Audio System

Audio System Wiring

Instructions for input/output wiring, connecting low/high impedance speakers, and warnings.

2.7 Connecting to AC Mains

AC Mains Connection and Safety

Covers connecting to AC power, safety warnings, and voltage requirements.

2.8 Protecting Your Speakers

Speaker Protection Measures

Advice on preventing speaker damage from clipping and subsonic signals.

2.9 Startup Procedure

Amplifier Startup Procedure

Step-by-step guide for safely powering on the amplifier for the first time.

3.0 Operation

Operational Precautions

Key precautions for safe and effective operation, including warnings and settings.

Input Routing and Configuration

Details input routing options, HI-Z switch, phantom power, and VOX ducking features.

Priority Muting and Remote Control

Explains priority muting, remote volume control, and sleep mode functions.

AUX Output

Details the auxiliary output availability, signal source, and control limitations.

4.0 Troubleshooting

Troubleshooting: No Power

Solutions for issues related to no power or unilluminated power ring.

Troubleshooting: No or Low Sound

Solutions for issues related to no or low sound output.

Troubleshooting: Distorted Sound

Solutions for issues related to distorted sound output.

Appendix A: Target Performance Specifications

Appendix B : Block Diagram

Appendix C: Contact Information

Contact Information and Resources

Provides website addresses and contact methods for support and product information.