Liberty 4500 User Manual

Troubleshooting Guide
Owner’s Manual
Liberty
ANCHOR Audio, Inc. (310) 784-2300
100-0005-000 / Revision F, 03/97
Having trouble with the sound system?
Condition Possible Cause
No sound (power LED not lit):
• power switch OFF
• batteries fully discharged (LED flashes briefly)
Charge indicator doesn’t light: • blown fuse
No sound
(power LED lights): • no output from source
• input cable unplugged
• input volume control low or off
• plug inserted into switched speaker output,
but no speaker connected
Shortened battery life: • short in external speaker cable or speaker
• total external speaker impedance < 4Ω
• batteries not fully charged
• batteries need replacement
Distorted sound: • poor connection on input cable
• input signal too strong
Excessive hum or noise: • input cable not shielded
• not using balanced microphone
Having trouble with the wireless system?
Condition Possible Cause
No sound (TX ON indicator lights): • mute switch set to ‘mute’ position
• wireless volume control low or off
• no mic plugged into belt-pack transmitter
No sound
(TX ON indicator off): • sound system not turned on
• transmitter power switch turned off
• low battery or no battery in transmitter
100-05-0/F, LIB 2/6/01 9:26 AM Page 1

Liberty 4500 Specifications

General

Brand	Liberty
Model	4500
Category	Speakers
Language	English

Summary

Troubleshooting Guide

Troubleshooting Sound System Issues

Identifies common issues and potential causes for sound system problems.

Troubleshooting Wireless System Issues

Lists potential causes for problems with the wireless microphone system.

Important Safeguards

Safety Precautions and Symbol Meanings

Details crucial safety precautions and explains graphical warning symbols.

Specifications

Liberty System Technical Specifications

Provides detailed technical data for the Liberty sound system models.

Accessories

Optional Liberty Accessories List

Lists optional accessories for the Liberty sound system.

Quick Use Guide

Liberty System Quick Start Guide

Provides initial setup and operation steps for quick use.

Getting Started

System Inspection and Return Procedures

Guides on checking for transit damage and returning units for service.

Wireless Operation

Transmitter Battery Replacement Guide

Instructions for changing the battery in the wireless transmitter.

Wireless Microphone System Operation

Steps for using the wireless microphone system with the sound system.

Wireless Operation

Wireless System Setup and Frequency Matching

Details on verifying frequency codes for wireless system setup.

Feedback Information

Understanding and Preventing Audio Feedback

Explains what feedback is and how to avoid it during operation.

Set-Up

Optimal Liberty Sound System Placement

Guidelines for optimal placement of the sound system for best coverage.

Battery Operation (MPB-4500)

Built-in Battery Care and Maintenance

Advice on maintaining battery health and lifespan.

Battery Charging Procedures

Step-by-step instructions for charging the system's batteries.

Battery Usage Time Estimates

Information on how long batteries last under different usage conditions.

Operation

Operation Modes and Input Connections

Explains the mode switch and different input connectors for operation.

DC Output and Cassette Player Operation

Details on the DC output jack and the built-in cassette player.

Set-Up

Setting Up in Challenging Acoustic Environments

Strategies for managing acoustics in reverberant environments.

Feedback Reduction Techniques for Difficult Rooms

Techniques to minimize feedback in challenging acoustic spaces.