Lab Gruppen C20:8X Amplifier

3,788.00 (including VAT @ 23%)

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Estimated delivery to you: 13th December 2016
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1 year warranty and 30 day money back guarantee included

1 year warranty and 30 day money back guarantee included

Once the product is delivered, you have 30 days to decide that you definitely want to keep it. If you decide it is not suitable for any reason, you can return it back to us for replacement or full refund, including standard delivery charges.

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Product Ref: 56808

  • Powerful Eight-Channel Amplifier
  • Adaptable to a Variety of Loads
  • Each Channel has Configurable Voltage Peak Limiter
  • Universal Power Supply
  • Efficient Cooling with Dual Variable Speed Intelligent Fans

Lab Gruppen C20:8X Amplifier

The Lab Gruppen C 20:8X is a 2u spaced, eight channel amplifier designed for a range of installation requirements. The C20:8X is the most powerful in the range delivering 8 x 250W at 4 ohms, 8 ohms and 16 ohms or 70 Vrm; 500W at 100Vrms available in bridge mode. The amplifier features configurable voltage peak limiters, an efficient cooling system and a universal power supply. The compact and lightweight Lab Gruppen C Series 20:8X is the perfect amplifier for any installation application with lower power output requirements.

Product Ref: 56808

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Full Description

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Like the other 4 CX models within the C series, the C20:8X is specifically designed to suit installation applications with lower power output requirements. Like the other higher power C series models, the CX have the same lightweight 2U chassis, however they are available in 4 and 8 channel versions for greater channel density and improved flexibility for installations. The amplifier can adapt to a variety of different load conditions and each channel has its own configurable Voltage Peak Limiter (VPL) to optimise the output of the loudspeaker load. The VPL works alongside the adjustable input gain to maximise headroom.

Lab Gruppen C Series

The Lab Gruppen C series of 4 and 8 channel amplifiers provides the solid foundation of install-dedicated amplifiers, with innovative features that make it perfect for the modern installation AV market. The C series is incredibly versatile, reliable and offer superb sound quality.



  • Number of Channels: 8
  • Peak Total Output all Channels Driven: 2000 W
  • Peak Output Voltage per Channel: 100V
  • Max Output Current per Channel: 8 Arms

Max Output Power All Channels Driven

  • 16 Ohms: 250 W
  • 8 Ohms: 250 W
  • 4 Ohms: 250 W
  • 2 Ohms: 125 W
  • Hi-Z per ch. (all ch.'s driven): 70 Vrms/ 100 V Peak: 250 W

Max Output Power Bridged

  • 16 Ohms: 500 W
  • 8 Ohms: 500 W
  • 4 Ohms: 250 W
  • 2 Ohms: Not Recommended
  • Bridged per ch 140 Vrms / 200 V Peak: 500 W


  • THD 20 Hz - 20 kHz at 1W: <0.1%
  • THD at 1 kHz and 1 dB Below Clipping: <0.05%
  • Signal to Noise Ratio: >112 dBA
  • Channel Separation (Crosstalk) at 1kHz: >70 dB
  • Frequency Response (1 W into 8 ohms) +0/-3 dB: 6.8 Hz - 34 kHz
  • Input Impedance: 20 kOhm
  • Common Mode Rejection (CMR): >50 dB, 20 Hz - 20 kHz
  • Output Impedance @ 100 Hz: 48 mOhm

Gain, Sensitivity and Limiters

  • VPL, Selectable per ch: 100, 63, 45, 32 V
  • VPL, When Bridged: 200, 126, 90, 64 V
  • Voltage Peak Limiter Mode (per ch.): Hard / Soft
  • Amplifier Gain Selectable (all channels) - Rear-Panel Switches: 29, 32, 35, 38 dB
  • Default Gain: 32 dB
  • Level Adjustment (per channel): Front-Panel Potentiometer, 21 Position Detented from -inf to

Connectors and Buttons

  • Input Connectors (per ch.): 3-pin Phoenix, Electronically Balanced
  • Output connectors (per ch.): Barrier Strip 2-pole Screw Terminals
  • Output Bridge Mode: A+B, C+D, E+F, G+H, inputs A, C, E, G are signal source
  • High Pass Filter: Fixed at 35 Hz, Switchable per Channel
  • NomadLink Network: On Board, 2 x RJ45 Connectors IN and OUT
  • Intelligent Fans (on/off): Yes, Depending on Presence of Output Signal
  • Power: Individual Switches on Front Panel
  • Cooling: Two Fans, Front-Rear Airflow, Temperature Controlled Speed
  • General Purpose Outputs (GPO): Contact Closure Types, 2-pole Phoenix
  • General Purpose Inputs (GPI): Contact Closure types, 2-pole Phoenix

Front-Panel User Interface

  • Common: NomadLink Network; Power Average Limiter (PAL); Power on
  • Per Channel: Signal present / High-impedance; Voltage Peak Limiter (VPL); Current Peak Limiter (CPL): Very High Frequency (VHF); High temperature; Fault; Mute


  • Operating voltage, 230 V / 115 V Nominal: Universal Power Supply 65-265 V
  • Minimum Power-up Voltage, 230 V / 115 V: 80 V
  • Power Average Limiter (PAL): Yes
  • Power Factor Correction (PFC): Yes
  • Soft-start / Inrush Current Draw: Yes / Max. 5 A
  • Mains Connector: IEC Inlet


  • Dimensions: W: 483 mm (19"), H: 88 mm (2 U), D: 343 mm (13.5")


  • Weight: 8.5 kg (18.75 lbs.)


  • Finish: Black Painted Steel Chassis with Gray Painted Steel Front


  • Approvals: CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC
Your order may be delivered with a plug adapter
If any electrical items in your order are supplied with a United Kingdom plug connection, a suitable plug conversion adapter will be included free of charge.