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
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