Lab Gruppen C284 4-Channel Phoenix Amplifier

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Description

Lab Gruppen C284 4-Channel Phoenix Amplifier

The C 28:4 is one of two mid-power, four-channel amplifiers in the C Series family. Attractively packaged in a 2U chassis, it provides 4 × 700 W output into 4 ohm loads.

Features:

  • 2,800 Watt, 4-channel amplifier with up to 700 Watts output per channel and NomadLink network for monitoring and control
  • Selectable gain plus scalable Voltage Peak Limiter (VPL) and bridge-mode operation allow custom configuration for any application
  • 4 x 300 Watts into 2 Ohms, 4 x 700 Watts into 4 Ohms, 4 x 700 Watts into 8 Ohms, 4 x 600 Watts into 16 Ohms, 4 x 700 Watts into Hi-Z 70 V, 4 x 700 Watts into Hi-Z 100 V
  • Proven and reliable Class-TD output stage delivers Class-A/B audio quality with Class-D efficiency
  • Regulated Switch Mode Power Supply (R.SMPS) ensures constant power output at all times
  • Intuitive DeviceControl software monitors and controls key functions via the NomadLink network
  • Comprehensive protection scheme including current, voltage, DC, temperature, short circuit and open load warnings
  • Efficient Intercooler copper cooling system dissipates more heat for extended peak output
  • 4 x balanced analog audio inputs on 3-pin Phoenix* connectors
  • 4 x barrier strip 2-pole screw terminal output connectors
  • Removable dust filter grille for increased air circulation
  • Compact and durable 2U rackmount chassis saves space in install applications

Specifications:

  • General
    • Number of amplifier channels: 4
    • Peak total output all channels driven: 2800 W
    • Peak output voltage per channel: 141 V
    • Max output current per channel: 12 Arms
  • Max output power (all channels driven)
    • 16 ohms: 600 W
    • 8 ohms: 700 W
    • 4 ohms: 700 W
    • 2 ohms: 300 W
    • Hi-Z per ch. (all ch.’s driven): 70 Vrms / 100 V peak: 700 W
  • Max output power bridged
    • 16 ohms: 1400 W
    • 8 ohms: 1200 W
    • 4 ohms: 600 W
    • 2 ohms: Not recommended 1
    • Bridged per ch.: 140 Vrms / 200 V peak: 1400 W
  • Performance
    • THD 20 Hz - 20 kHz at 1 W: <0.1%
    • THD at 1 kHz and 1 dB below clipping: <0.05%
    • Signal to Noise Ratio: >112 dBA
    • Channel separation (Crosstalk) at 1 kHz: >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: 30 mOhm
  • Gain, Sensitivity and Limiters
    • VPL, selectable per ch 2: 141, 118, 100, 85, 71, 59, 50, 42 V
    • VPL, when bridged 2 3: 282, 236, 200, 170, 142, 118, 100, 84 V
    • Voltage Peak Limiter mode (per ch.): Hard / Soft
    • Amplifier gain selectable (all channels) – rear-panel switches 3: 23, 26, 29, 32, 35, 38, 41, 44 dB
    • Default gain: 35 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 and/or C+D, inputs A and C are input source
    • 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
  • Front-panel user interface
    • Common: NomadLink Network; Power Average Limiter (PAL)5; Power on
    • Per channel: Signal present / High-impedance; -10 dB and -4 dB output signal;Voltage Peak Limiter (VPL); Current Peak Limiter (CPL): Very High Frequency (VHF); High temperature; Fault; Mute
  • Power
    • Operating voltage, 230 V / 115 V nominal: 130-265 V / 65 -135 V 4
    • Minimum power-up voltage, 230 V / 115 V: 171 V / 85 V
    • Power Average Limiter (PAL) 5: Yes
    • Power Factor Correction (PFC): No
    • Soft-start / Inrush Current Draw: Yes / max. 5 A
    • Mains connector: 230 V CE: 16 A, CEE7; 115 V ETL: 20 A / NEMA 5-20P; C16:4: 15A/NEMA 5-15P
  • Dimensions
    • Dimensions: W: 483 mm (19”), H: 88 mm (2 U), D: 343 mm (13.5”)
  • Weight
    • Weight: 12 kg (26.4 lbs.)
  • Finish
    • Finish: Black painted steel chassis with gray painted steel front
  • Approvals
    • Approvals: CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC

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