Lab.Gruppen E4:2 Power Amplifier, 200W x 2 at 8 Ohms/70V

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E4:2
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Introducing E Series, built around Lab.gruppen's brilliant IDEEA, the IntelliDrive Energy Efficient Amplifier. Specifically designed for greater sustainability through "greener" commercial installations, the E Series incorporates the latest advances in Lab.gruppen quality and durability into three powerful, ultra-compact, and highly cost-effective two-channel amplifiers.

New technology and Energy Star™2.1

In designing the new 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.

New power supply and output stage

For peak operating efficiency, the E Series incorporates a new high-headroom universal power supply accepting any mains voltage from 70 to 265 V at 50 or 60 Hz. A higher storage capacity in the power supply prevents excessive draw on the mains inlet during repeated peak bursts, maintaining extra headroom on the supply rails for sustained maximum output with minimal distortion. The Class D output stage is highly efficient (above 90%), while the inherently bridged topology allows up to twice the rated power output on one channel when the other channel is unused or driving a low power application. RSL™: Mix, match and balance loads The new Rail Sensing Limiter (RSL) is the latest refinement of Lab.gruppen's proprietary approach to optimizing amplifier output characteristics to match the connected load. Each channel has a two-position switch that sets the output for driving either low impedance or high impedance (70 V) loudspeaker systems, with a +4 dBu sensitivity regardless of load type. RSL works in conjunction with the high headroom power supply and inherently bridged output stage to allow asymmetric loading. Power resources in the amplifier can be utilized to maximum advantage, with one channel producing far beyond its rated output when the other channel has lesser power requirements.

 
  • Number of channels 2
  • Max total output all channels driven 400 W
  • Peak output voltage per channel 100 V / 70 Vrms
  • Max. output current per channel 11 Arms
Max. Output Power Per Channel (All Channels Driven)
  • 2 ohms (Lo-Z mode) 200
  • 4 ohms (Lo-Z mode) 200
  • 8 ohms (Hi-Z mode) 200
  • 16 ohms (Hi-Z mode) 200
  • 70 V (Hi-Z mode) 200
  • 8 ohms (Lo-Z mode) 100
  • 16 ohms (Lo-Z mode) 50
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
Gain, Sensitivity and Limiters
  • 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 40.0 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 27.2 dB
  • Level adjustment (per channel) Rear panel potentiometer detented from -inf to 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
  • Mains connector IEC inlet
  • Dimensions W: 483 mm (19"), H: 44 mm (1 U), D: 276 mm (10.9")
  • Weight 4 kg (8.8 lbs.)
  • Finish Dark grey aluminum front and black steel chassis
  • Approvals CE
  • Warranty 3 years, components and factory workmanship. See full warranty statement.
  • Bars and Restaurants
  • Retail Outlets
  • Malls
  • Hotels & Ballrooms
  • Conference Centers
  • Museums & Galleries
  • Houses of Worship
  • Theme Park Installations
  • Educational Establishments
  • Auditoriums
  • Performing Arts Centers
  • Convention Centers
  • Transport Hubs
 
 

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