Lab.gruppen LAB 1000 User Manual

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. Input connections
7. Connecting speakers
Operation modes 6
1. Stereo
2. Tandem mono
3. Bridged mono
4. Stereo reverse
Operation 7
1. Operation precautions
2. Input attenuators
3. Gain switch
4. Indicators
Protections 8
1. Clip-limiter
2. Thermal protection
3. VHF protection
4. Short circuit protection
5. D.C. protection
LAB 1000
USER MANUAL
Design features 9
• Cooling
•
Safety approvals
• EMC approvals
Specifications 9
•
EMC-declaration
Appendix A 10
•
Mains voltage selection
Maintenance 10
Troubleshooting 10
Warranty and disclaimers 11
• General
• International
Technical assistance and services 11
• International
• Factory services
Unpacking
1

Lab.gruppen LAB 1000 Specifications

Power Output

max output power at 8 Ω stereo	350 W
max output power at 4 Ω stereo	550 W
max output power at 2 Ω stereo	600 W
max output power at 8 Ω bridged	1200 W
max output power at 4 Ω bridged	1300 W

Power Output (EIA)

max output power at 8 Ω stereo (EIA)	380 W
max output power at 4 Ω stereo (EIA)	600 W
max output power at 2 Ω stereo (EIA)	700 W
max output power at 8 Ω bridged (EIA)	1300 W
max output power at 4 Ω bridged (EIA)	1400 W

Calculated Peak Power

peak power at 8 Ω stereo	500 W
peak power at 4 Ω stereo	900 W
peak power at 2 Ω stereo	1300 W
peak power at 8 Ω bridged	1800 W
peak power at 4 Ω bridged	2600 W

IHF Peak Power

ihf peak power at 8 Ω stereo	450 W
ihf peak power at 4 Ω stereo	750 W
ihf peak power at 2 Ω stereo	900 W
ihf peak power at 8 Ω bridged	1500 W
ihf peak power at 4 Ω bridged	1800 W

Distortion

thd 20 Hz-20 kHz and 1 W-600 W at 4 Ω	0.08 %
thd at 1kHz and 600W at 4 Ω	0.03 %
dim 30 at 300 W at 4 Ω	0.02 %
ccif (13 and 14 kHz) at 200 W at 4 Ω	0.02 %
smpte (60 Hz and 7 kHz) at 300 W at 4 Ω	0.05 %

Power and Operating Conditions

power bandwidth	10 Hz-50 kHz
slew rate	40 V/µs
output impedance at 1 kHz	0.07 ohm
hum and noise below max power	<- 105 dBA
channel separation at 1 kHz	90 dB
channel separation at 10 kHz	75 dB

Phase and Delay

deviation from perfect delay 150 Hz-20 kHz	± 2°
total delay input to output at 4 ohms	4.1 µs
sensitivity for full output into 4 ohms	0.775 or 1.7 Vrms
gain switchable	36 dB or 29 dB
impedance	20 kohms, balanced

Power Requirements

operation voltage	120 V - 260 V AC
full output power	230 V AC
peak inrush current	83A

Dimensions and Weight

width	483 mm (19”)
height	88 mm (3.5”)
depth	355 mm (14”)
weight	18 kg (40 lbs)

Summary

User Responsibility

Speaker Damage

Potential for loudspeaker damage due to overpowering and checking speaker capabilities.

Speaker Output Hazard

Hazardous output voltages from power amplifiers, avoid touching exposed wiring.

Introduction

Front Panel Components

Describes carry handles, input attenuators, indicators, and power actuator on the front panel.

Installation

Cooling

Explains the forced air cooling, Intercooler, and heat sink operation.

Operating Voltage

Grounding

Connecting Speakers

Explains Neutrik NL4FC Speakon connectors and proper speaker wiring.

Operation Modes

Bridged Mono

Combines both channels for higher power output; requires specific connections.

Operation

Operation Precautions

Safety checks before connecting, powering on, and setting levels.

Indicators

Protection Features

Clip Limiter

Prevents dangerous clip signals by reducing input signal when distortion exceeds 1%.

Thermal Protection

Mutes input signal when amplifier overheats, indicated by temperature LEDs.

VHF Protection

Mutes input signal if high-frequency signals persist at the output terminals.

Short Circuit Protection

D.C. Protection

Design Features

Cooling System