Lab Gruppen C 68:4 Four Channel Installation Power Amplifier

The Lab Gruppen C 68 4 Four Channel Installation Power Amplifier is a high-performance 6800W professional amplifier designed for demanding installed sound systems such as auditoriums, hotels, houses of worship, and commercial venues.

Built with Class TD amplification technology, it delivers the sonic quality of Class AB amplifiers with the efficiency of Class D, ensuring powerful output, high reliability, and low heat generation. The amplifier integrates NomadLink network monitoring, allowing system engineers to remotely monitor and control amplifier parameters using dedicated software.

With scalable Voltage Peak Limiter (VPL) settings, flexible gain options, and support for both low-impedance and 70V/100V systems, the Lab Gruppen C 68 4 provides outstanding performance and flexibility for modern professional audio installations.

Features
1. High power 6800W four channel installation amplifier
2. Delivers up to 1700W output per channel
3. Advanced Class TD amplifier technology
4. NomadLink network monitoring and control capability
5. Selectable amplifier gain for system optimization
6. Voltage Peak Limiter for speaker protection
7. Bridge mode operation for higher power output
8. Regulated Switch Mode Power Supply for stable performance
9. Intercooler copper cooling system for efficient heat dissipation
10. Comprehensive protection including voltage and temperature protection
11. Balanced Phoenix audio input connectors
12. Barrier strip screw terminal speaker outputs
13. Intelligent temperature controlled cooling fans
14. Compact and durable 2U rackmount chassis
15. Removable dust filter for improved airflow and maintenance

Specifications
Power Output (All Channels Driven)
1. 16 Ohm: 650W per channel
2. 8 Ohm: 1200W per channel
3. 4 Ohm: 1700W per channel
4. 2 Ohm: 1200W per channel
5. 70V High Impedance: 1600W per channel
6. 100V High Impedance: 1200W per channel
Bridged Output Power
1. 16 Ohm Bridged: 2400W
2. 8 Ohm Bridged: 3400W
3. 4 Ohm Bridged: 2400W
Performance
1. THD (20Hz–20kHz): <0.1%
2. THD at 1kHz: <0.05%
3. Signal to Noise Ratio: >112 dBA
4. Frequency Response: 6.8 Hz – 34 kHz
5. Channel Separation: >70 dB
6. Input Impedance: 20 kOhm
Gain and Limiter
1. Selectable Gain: 23 / 26 / 29 / 32 / 35 / 38 / 41 / 44 dB
2. Default Gain: 35 dB
3. Voltage Peak Limiter Levels: 141V to 42V
Connectivity
1. Input Connectors: 3 pin Phoenix balanced
2. Output Connectors: Barrier strip screw terminals
3. Network Monitoring: NomadLink RJ45 IN / OUT
Cooling
1. Cooling System: Dual temperature controlled fans
2. Airflow: Front to rear
Power
1. Operating Voltage: 130 – 265V AC
2. Soft Start: Yes
3. Power Average Limiter: Yes
Physical
1. Dimensions: 483 × 88 × 343 mm
2. Rack Size: 2U
3. Weight: 12 kg

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