Questions? Call Us:

Lab Gruppen C5-4X
4-Channel C-Series Power Amplifier

OUR PART #:  C5-4X

The Lab.Gruppen C 5:4X is a versatile four-channel amplifier, delivering 4 Ă— 125 W at 4 ohms, 8 ohms, 16 ohms or 70 Vrms; 250 W at 100 Vrms is available in bridge mode.
Learn More

Call for price! Not available online.

Related Products

The Lab.Gruppen C 5:4X is a versatile four-channel amplifier, delivering 4 Ă— 125 W at 4 ohms, 8 ohms, 16 ohms or 70 Vrms; 250 W at 100 Vrms is available in bridge mode.

The C 5:4X is uniquely suited for a range of installed applications with its relatively lower power output requirements, compact & lightweight 2U chassis, and a channel density and installation flexibility that are greater than those found in Lab.Gruppen's C Series amps.  Because the unique benefits of Class TD® are more applicable at higher power levels, the C5:4X employs a cost-efficient proprietary Class D output design.  Other features include a universal power supply, selectable 35 Hz high-pass filter, and built-in GPIO control facilities.

This amplifier is 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 software, and remote control of channel mutes and power on/off is under network control.

GPIO facilities – provided exclusively on the C5:4X allows access to key amplifier functions such as power on/off and fault reporting.

Lab.Gruppen C5-4x Amplifier Features:

  • Four channels in 2U: High channel density reduces space requirements and installation time
  • High continuous output power of 125 W per channel at 70 V, 4 ohms, 8 ohms,and 16 ohms*
    * Maximum continuous output power, all 8 channels driven, VPLset at 100 V and Gain set at 32 dB.
  • All channels individually selectable for lo-Z or hi-Z: Loudspeakers (2 ohm– 16 ohm) and distributed systems can be connected to the same unit
  • Bridged operation: Channel pairs bridgeable for increased output or fordriving 100 V systems
  • Patented output stage based on Class D topology
  • High efficiency for lower thermal stress
  • General Purpose Input/Output (GPIO): Compatible with third-party control systems
  • NomadLink® network ready
  • Universal Power Factor Corrected PSU with IEC inlet
  • Efficient cooling: Dual variable speed, intelligent fans and parallel airflow over output devices provide uniform cooling
  • Comprehensive circuit protection and fault indication
  • Phoenix-style input connectors and barrier strip output connectors

Lab.Gruppen C5-4x Amplifier Specifications:

  • Number of channels: 4
  • Peak total output all channels driven: 500 W
  • Peak output voltage per channel: 100 V / 70 Vrms
  • Max. output current per channel: 5.6 Arms
  • Performance with Gain: 32 dB and VPL: 100 V
  • THD 20 Hz - 20 kHz for 1 W:<0.1%
  • THD at 1 kHz and 1 dB below clipping: <0.05%
  • Signal To NoiseRatio: >112 dBA
  • Channel separation (Crosstalk) at 1 kHz: >70dB
  • Frequency response (1 W into 8 ohms) +0/-3 dB: 2.3 Hz - 56 kHz
  • Inputimpedance: 20 kOhm
  • Input Common Mode Rejection, CMR: 50 dB
  • Output impedance @ 100 Hz: 48 mOhm
  • Voltage Peak Limiter (VPL), max. peak output
  • VPL, selectable per ch.*:100, 63, 45, 32 V
  • VPL, selectable when bridged*^: 200, 126, 90, 64V
  • Voltage Peak Limiter mode (per ch.): Hard / Soft
    *For sine waves, peakvoltage output values translate to Vrms with the formula V/1.41=
    ^Automatic -6 dB gain compensation when bridging channels. Ch.s A+Band/or C+D, can be bridged individually
  • Gain and Level
  • Amplifier gain selectable (all channels)^ – rear-panel switches: 29, 32, 35, 38 dB
    ^Automatic -6 dB gain compensation when bridging channels. Ch.s A+B and/or C+D, can be bridged individually
  • Defaultgain: 32 dB
  • Level adjustment (per ch.): Front-panel potentiometer, 21position detented from -inf to 0 dB, hidden behind security panel/dust filter grille
  • Input connectors (per ch.): 3-pin Phoenix, electronically balanced
  • Output connectors (per ch.): Barrier strip 2-pole screw terminals
  • Output bridge mode: A+B and/or C+D, inputs A and C 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 on/off and Remote enable on/off: Individual switches on front-panel
  • Cooling: Two fans, front-to-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 indicators:
  • Common: NomadLink® Network; Power AverageLimiter (PAL) 2); 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: 100-240 V
  • Minimum power-up voltage, 230 V / 115 V: 80 V
  • Power Average Limiter (PAL)**: Yes
    PAL can reduce the maximum outputpower to keep the power supply operating safely, and/or to prevent excessivecurrent draw tripping the mains breaker. Refer to Operation Manual.
  • Soft start / Inrush current draw: Yes / max. 5 A
  • Mains connector: IEC Inlet / NEMA 5-15P
  • Dimensions: 19" W x 2 RU H x 13.5" D (483 x 88 x 343 mm)
  • Weight: 18.75 lbs. (8.5 kg)
  • Finish: Black painted steel chassis with gray painted steel front
  • Approvals: CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC

To be the first to review this item, click here.

Add to Cart

We're sorry, only of this item available

Call a Sales Pro at 800-356-5844 for more information

© 2018 Full Compass Systems, LTD  9770 Silicon Prairie Parkway, Madison, WI 53593  All rights reserved.

We are not responsible for typographical errors in pricing or product specification
inaccuracies in our catalog or web site. Prices are subject to change without notice.