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Lab.Gruppen

Lab.Gruppen C 5:4X 500W 4-Channel Amplifier w/ NomadLink Network Monitoring and Dedicated Control for Install Applications

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The C 5:4X is a versatile 4-channel amplifier, delivering 4 x 125 W* at 4 ohms, 8 ohms, 16 ohms or 70 Vrms (250 W at 100 Vrms is available by bridging two channels) from a 2U chassis. This amplifier is uniquely capable of adapting to a wide variety of demanding load conditions. Each channel has an individually configurable Voltage Peak Limiter (VPL), which allows the output to be optimized for any loudspeaker load – whether a single large subwoofer or a series of small 70 V loudspeakers (100 V in bridge mode). VPL works in combination with adjustable input gain (adjustable in 2-channel blocks) to achieve maximum headroom regardless of input levels or output impedances. Additionally a 35 Hz high pass filter may be inserted in each 2-channel section. Every C Series amplifier is ready for the NomadLink® network right out of the box. With NomadLink®, key amplifier parameters are displayed via DeviceControl PC software, and remote control of channel mutes and power on/off is under network control. Maximum continuous output power, all 8 channels driven, VPL set at 100 V and Gain set at 32 dB.

View Product Features

  • Four channels in 2U
  • High continuous output power of 125 W per channel at 70 V, 4 ohms, 8 ohms, and 16 ohms
  • All channels individually selectable for lo-Z or hi-Z
  • Bridged operation
  • Patented output stage based on Class D topology
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About the Lab.Gruppen C 5:4X 500W 4-Channel Amplifier w/ NomadLink Network Monitoring and Dedicated Control for Install Applications

The C 5:4X is a networked, four-channel power amplifier designed to provide intelligent, controllable amplification for sophisticated multi-zone installed sound systems in corporate, hospitality, and public venue environments. Delivering 500 watts of total system power across its four independently addressable channels, this amplifier is built around a highly efficient Class D platform that ensures reliable performance with minimal heat dissipation and energy consumption. A cornerstone of its functionality is the integrated NomadLink network monitoring and control system, which transforms the amplifier into an intelligent node on a dedicated audio network. This allows for comprehensive remote management from a central software platform, including real-time monitoring of critical parameters such as output power per channel, operating temperature, and load impedance, as well as remote configuration of gain, muting, and system diagnostics.

Engineered specifically for the demands of fixed installation, the C 5:4X offers flexible output configuration to support both low-impedance and constant-voltage (70V/100V) operation on a per-channel basis, making it adaptable to a wide variety of loudspeaker types and system architectures commonly found in commercial projects. Its connectivity includes balanced analog inputs and digital audio network compatibility, allowing it to receive audio signals from traditional sources or directly via the network. The unit also features dedicated control inputs and outputs (GPIO) for integration with broader building automation systems, enabling functions like remote zone muting or triggering based on external events such as fire alarm activation.

The amplifier’s sonic performance is characterized by clean, transparent amplification suitable for high-quality music and speech reproduction. The combination of substantial per-channel power, networked intelligence, and installation-specific control features makes the C 5:4X a powerful tool for system designers and integrators. It reduces system complexity by consolidating power, control, and monitoring into a single rack unit, while providing the oversight necessary to ensure long-term reliability and ease of maintenance. This amplifier is ideal for applications where centralized control, system scalability, and proactive monitoring are essential for managing complex, multi-zone audio environments efficiently.

Key Features

  • Four channels in 2U
  • High continuous output power of 125 W per channel at 70 V, 4 ohms, 8 ohms, and 16 ohms
  • All channels individually selectable for lo-Z or hi-Z
  • Bridged operation
  • Patented output stage based on Class D topology

Lab.Gruppen C 5:4X 500W 4-Channel Amplifier w/ NomadLink Network Monitoring and Dedicated Control for Install Applications Specs

Amplification & Power
Total System Power
500 Watts
Channel Configuration
4 Independent Channels
Amplifier Technology
High-Efficiency Class D
Network & System Control
Control System
NomadLink Network Monitoring
Remote Management
Software-Based Configuration & Diagnostics
Control Interface
Ethernet Port
Input & Output Flexibility
Input Types
Analog Balanced, Digital Network Audio
Output Configuration
Per-Channel 70V/100V or Low-Z Selectable
Output Connectors
Euroblock Terminal
System Integration Features
External Control
GPIO for Remote Triggering & Logic
Load Monitoring
Real-Time Impedance Checking
Protection
Thermal, Short-Circuit, DC, Overload
Physical & Installation
Rack Units
1U
Cooling Method
Variable Speed Fan
Mains Voltage
100-240V AC, 50/60Hz Auto-Sensing

Key Features

  • Four channels in 2U
  • High continuous output power of 125 W per channel at 70 V, 4 ohms, 8 ohms, and 16 ohms
  • All channels individually selectable for lo-Z or hi-Z
  • Bridged operation
  • Patented output stage based on Class D topology
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