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Lab Gruppen E8-2 Ampllfier
2-Channel Power Amplifier with Low Impedance and 70/100V Operation

OUR PART #:  E8-2

In designing the E Series...
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In designing the E Series, Lab.gruppen engineers drew upon the cutting-edge amplifier design philosophies developed for the flagship PLM™ 20000Q Powered Loudspeaker Management system, evolving these to create new circuit topologies and control features to meet the demands of 21st century AV installations. The result is a new amplifier platform called IDEEA: IntelliDrive Energy Efficient Amplifier. The principal design challenge was maintaining Lab.gruppen’s impeccable sonic performance and robust power output while meeting – or exceeding – the rigorous efficiency requirements of Energy Star 2.1 certification. The challenge was met on two fronts: reducing current draw during operating cycles with vigorous program material and high output levels, and reducing power consumption during non-operational cycles.

To conform with Energy Star requirements, E Series amplifiers offer auto-power-down, which activates when no signal is detected for 20 minutes. Auto-power-on is triggered when signal is again present at the input. The GPI-type contact closure can also be used to control the power state as well as external power sequencers if desired.

E Series amplifiers are designed for ease of installation and reliable service, with notable features including a 35 Hz high-pass filter (switchable per channel), inputs and outputs on detachable Phoenix-type screw terminals, and a temperature controlled fan that turns off for low-level signals. Comprehensive circuit protection and fault indication also included.

Lab.gruppen E8:2 Features:

  • High power density – Up to 2x 600 W in 1U
  • Certified Energy Star 2.1 compliant
  • Flexible – IntelliDrive delivers similar power per channel at 70 V, 2, 4,8 and 16 ohms
  • Asymmetric loading allows “mixing and matching” of loads with different impedances to maximize both overall system efficiency and inventory utilization
  • Patented IDEEA output stage based on Class D topology
  • High efficiency – Extremely low power consumption and heat output
  • Exceptionally low cost of ownership over lifetime
  • RSL switch circuit senses rail voltage and optimizes output for instantaneous load conditions
  • Efficient cooling – One temperature-controlled fan
  • Comprehensive circuit protection and fault indication

Lab.gruppen E8:2 Specifications:

  • Number of channels: 2
  • Max total output all channels driven: 800 W
  • Peak output voltage per channel: 100 V / 70 Vrms
  • Max. output current per channel: 16 Arms
  • Max. Output Power Per Channel (All Channels Driven):
    • 2 ohms (Lo-Z mode): 400
    • 4 ohms (Lo-Z mode): 400
    • 8 ohms (Hi-Z mode): 400
    • 16 ohms (Hi-Z mode): 290
    • 70 V (Hi-Z mode): 400
    • 8 ohms (Lo-Z mode): 200
    • 16 ohms (Lo-Z mode): 100
  • Performance:
    • THD: 20 Hz - 20 kHz for 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: 2 Hz - 40 kHz
    • Input impedance: 20 kOhm
    • Common Mode Rejection (CMR): 50 dB
    • Output impedance: 25 mOhm 
    • Limit and gain switch (per channel) 2 pos: Lo-Z and Hi-Z
    • VPL for Hi-Z mode: 100 V
    • VPL for Lo-Z mode: 56.6 V
    • Sensitivity for 70 V out in Hi-Z mode: 4 dBu
    • Sensitivity for full power into 4/8/16 ohms in Lo-Z mode: 4 dBu
    • Gain in Hi-Z mode: 35.2 dBu
    • Gain in Lo-Z mode: 30.3 dB
    • Level adjustment (per channel) Rear panel potentiometer detented from -infto: 0 dB
  • Connectors and switches:
    • Input connectors (per ch.): 3-pin detachable screw terminals, electronically balanced
    • Output connectors (per ch.): 2-pin detachable screw terminals
    • High pass filter: Fixed at 50 Hz, switchable per channel
    • Power control: Can be used to go between standby and ON
    • GPI (power control input): Contact closure type, 2-pin detachable screw terminal, controls the power state
    • GPO (power state output): Contact closure type, 2-pin detachable screw terminal, for external monitoring of the power state
    • Cooling Single fan, front to rear airflow, no filter required, temperature controlled speed
  • Power:
    • Nominal voltage: 100-240 VAC
    • Operating voltage: 60-265 VAC
    • Standby consumption: <1 W
    • Mains connector: IEC inlet
  • Dimensions: W: 483 mm (19"), H: 44 mm (1 U), D: 276 mm (10.9")
  • Weight: 4.1 kg (9 lbs.)
  • Finish: Dark grey aluminum front and black steel chassis
  • Approvals: CE
  • Warranty: 3 years, components and factory workmanship.

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