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Lab.Gruppen

Lab.Gruppen LUCIA 240/1-70 Compact Mono 240 W Amplifier for High Impedance 70 V Installation 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 LUCIA 240/1-70 Compact Mono 240 W Amplifier for High Impedance 70 V Installation Applications

The LUCIA 240/1-70 is a high-power, single-channel amplifier engineered specifically to serve as the core power source for large-scale 70V and 100V constant-voltage distributed audio systems in commercial and institutional settings. Delivering a robust 240 watts of output, this amplifier is designed to drive extensive networks of ceiling speakers, horn arrays, and other transformer-coupled loudspeakers across vast areas such as airports, convention centers, university campuses, and industrial facilities. Its compact, single rack-unit design is optimized for high-density installation in equipment closets, allowing for significant power in a minimal footprint. The amplifier’s integrated step-up output transformer provides the essential high-impedance interface required for efficient power transfer over long cable runs to dozens of speakers, ensuring consistent audio levels throughout the facility with minimal signal loss.

Operational efficiency and reliability are central to this amplifier's design, featuring an advanced auto-standby function with precision signal sensing. This intelligent system monitors the audio input and transitions the amplifier to an ultra-low-power consumption state during periods of inactivity, reactivating instantly upon detecting an audio signal. This feature is critical for installations that operate 24/7, leading to substantial energy savings and a reduced total cost of ownership. The unit is built for continuous, unattended operation with comprehensive protection against short circuits, thermal overload, and other fault conditions, ensuring long-term stability and protecting the connected speaker infrastructure. Its fanless, convection-cooled design guarantees silent operation, a necessity for noise-sensitive environments.

The amplifier provides clean, intelligible audio amplification tailored for voice evacuation, public address, and background music, with ample power reserves to maintain headroom and clarity across all connected zones. By combining high power density, certified energy efficiency, and purpose-built functionality for constant-voltage systems, the LUCIA 240/1-70 offers system integrators a powerful, reliable, and space-conscious solution. It addresses the critical need for a durable, high-output amplifier that simplifies the design and installation of large distributed audio networks while minimizing ongoing operational expenses through intelligent power management.

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 LUCIA 240/1-70 Compact Mono 240 W Amplifier for High Impedance 70 V Installation Applications Specs

Amplifier Purpose & Power
Application Design
70V/100V Distributed Audio
Channel Configuration
Mono (Single Channel)
Rated Output Power
240 Watts
Chassis & Thermal Design
Rack Height
1U Standard
Enclosure Profile
Compact and Shallow
Cooling Method
Fanless Convection Cooling
Input & Control Features
Input Connection
Balanced Phoenix Terminal
Level Control
Front-Panel Rotary Adjustment
Standby Logic
Automatic Signal-Sensing
Output & Transformer Details
Output Transformer
Integrated High-Power Step-Up
Output Connection
Heavy-Duty Screw Terminal
Wiring Support
Common, 70V, 100V Taps
Electrical & Protection
Mains Voltage
100-240V AC, 50/60Hz
Standby Power
Less than 1 Watt
Protection Features
Short Circuit, Thermal, Overload

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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