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Lab.gruppen LAB 4000 User Manual

Lab.gruppen LAB 4000
13 pages
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1
USER MANUAL HEADLINES
Unpacking 2
Warnings 2
User responsibility 2
1. Speaker damage
2. Speaker output hazard.
3. Radio interference.
Introduction 3
1. Front panel
2. Rear panel
Installation 4
1. Mounting
2. Cooling
3. Operating voltage
4. Grounding
5. Power consumption
6. Denmark: National deviation
7. Switzerland: National deviation
8. Input connections
9. Connecting speakers
10. Impedance matching (MLS-switches)
Operation modes 8
1. Stereo
2. Tandem mono
3. Bridged mono
4. Stereo reverse
Operation 8
1. Operation precautions
2. Powering up -Soft start
3. Input attenuators
4. Gain switch
5. Indicators
Protections 9
1. Clip-limiter
2. Thermal protection
3. VHF protection
4. Short circuit protection
5. Adaptive Fuse Saver (AFS)
6. AC mains voltage protection
7. D.C. protection
Design features 10
Cooling
Light weight
Regulated power supply
Safety approvals
EMC approvals
Specifications
11
EMC-declaration
Appendix A 12
Mains voltage selection
Maintenance 12
Troubleshooting 12
Warranty and disclaimers 13
General
International
Technical assistance and services 13
International
Factory services
LAB 4000
USER MANUAL
Rev. 3

Other manuals for Lab.gruppen LAB 4000

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Lab.gruppen LAB 4000 Specifications

General IconGeneral
Number of Channels2
Max Output Power per Channel @ 2 ohms2000 W
THD+N< 0.1%
Signal to Noise Ratio> 100 dB
Input Sensitivity1.4 V
Voltage Gain32 dB
Input Impedance20 kΩ
Damping Factor>200
CoolingConvection

Summary

Unpacking and Warnings

Warnings

Read safety warnings before operating the amplifier, including cord conditions and grounding.

User Responsibility

Details user responsibilities regarding speaker protection and safe operation to prevent damage or injury.

Introduction and Front Panel

Front Panel Overview

Describes the LAB.GRUPPEN amplifier's front panel components and their functions.

Rear Panel Overview

Installation Guide

Mounting and Cooling

Instructions for mounting the amplifier in a rack and details on its forced air cooling system.

Operating Voltage and Grounding

Information on selecting the correct operating voltage and the importance of proper grounding.

Power Consumption and National Deviations

Details power consumption specifications and national installation deviations for Denmark and Switzerland.

Input and Speaker Connections

Guidance on connecting audio sources via XLR and TRS jacks, and speaker connections.

Impedance Matching

Explanation of MLS-switches for impedance matching to optimize output power and efficiency.

Operation Modes

Stereo Operation

Describes standard stereo operation where channels function independently.

Tandem Mono

Details tandem mono mode for dual-channel single-input operation.

Bridged Mono

Instructions for bridging the amplifier for mono operation, including connection specifics.

Stereo Reverse Mode

Explains the stereo reverse mode for improved efficiency with channel B phase reversed.

Amplifier Operation

Operation Precautions

Essential precautions to take before operating the amplifier, including power and switch settings.

Powering Up and Input Controls

Details the soft start sequence, input attenuators, and gain switch functions.

Indicators Explained

Explanation of the front panel indicators and their meaning during operation.

Protection Features

Clip, Thermal, and VHF Protection

Details clip limiter, thermal protection, and VHF protection mechanisms.

Short Circuit, AFS, and Voltage Protection

Covers short circuit, Adaptive Fuse Saver (AFS), AC voltage, and DC protection circuits.

Design Features

Cooling System

Description of the patented Intercooler cooling system for efficient heat dissipation.

Lightweight Construction

Highlights the amplifier's lightweight design achieved through SMPS and advanced materials.

Safety Approvals

EMC Approvals

Details compliance with EMC directives for electromagnetic compatibility and immunity.

Appendix A: Mains Voltage Selection

Maintenance and Troubleshooting

Maintenance Schedule

User maintenance recommendations and advice for periodic servicing.

Troubleshooting Guide

Common faults and their solutions, including no output or thermal protection issues.

Warranty and Service Information

General Warranty Terms

Details the product warranty, exclusions, and conditions for service.

International and Technical Support

Information on international warranty, technical assistance, and contacting service centers.

Factory Service Procedures

Instructions for obtaining factory service, including return authorization and packing requirements.

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