Overview
E Series E 8:2
The E 8:2 has smart green credentials delivering low lifetime cost of ownership.
Energy Star Qualified
By maintaining very low current draw during operating cycles even at high output levels, and reduced power consumption during non-operational cycles, our Energy Star qualified products harness impeccable Lab Gruppen sonic performance and robust power output while meeting the rigorous efficiency requirements of current Energy Star certification standards.
Small in Size, Huge in Benefits
Building on Lab Gruppen’s touring reputation for sonic excellence and rock-solid durability, E Series brings a competitive edge to the installation market by adding ultra-compact size, high operating efficiency, output configuration flexibility, and an unprecedented cost-benefit ratio.
At the heart of E Series is Lab Gruppen’s IDEEA (IntelliDrive Energy Efficient Amplifier) technology. Based around a patented Class D variant output stage, IDEEA produces high power levels with very low distortion while drawing minimal mains current.
Lab Gruppen’s proprietary Rail Sensing Limiter (RSL), also exclusive to E Series, greatly reduces signal clipping to ensure high quality audio output at all times. User configurable for Hi-Z (70 V) or Lo-Z, RSL senses rail voltages and optimizes each output for instantaneous load conditions. RSL settings also facilitate asymmetric loading of the channels to optimize performance and efficiency. Total available output power can be allocated among the channels as required by the application. This makes it possible, for example, to drive a small sub on one channel, a number of 70 V ceiling loudspeakers on the second channel.
Features
800 W amplifier carrying 2 flexible output channels in a high power density 1 rack unit form factor saves rack space and system cost
Energy efficient with Energy Star certification for supreme green credentials and exceptionally low lifetime running costs
Flexible IntelliDrive permits delivering the 2 x 400 W at constant voltage 70 V or low impedance (2, 4 and 8 Ohms) on any channel
Asymmetric channel loading allows mixing and matching loads with different impedances to maximize overall system efficiency and inventory utilization
High efficiency amplifier with low power consumption and minimized heat generation lowers demands on the installations' mains distribution and cooling systems
IDEEA outputs stage based on proprietary, state-of-the-art Class-D amplifier technology for superior performance
Comprehensive fail safe circuit protection ensures continued operation even under reduced operating conditions
Auto-standby and auto-power-on reduces power consumption to below 1 W in non-operating cycles
Rail Sense Limiter (RSL) greatly reduces signal clipping and ensures simple configuration for constant voltage and low impedance loads
Built in 50 Hz high pass filter selectable per channel available on rear panel switch
Per-channel attenuation knob and signal LED on rear panel for simple commissioning
Efficient cooling with temperature controlled fan with front to back airflow
Aluminum front panel with power and temperature LEDs and per channel signal and limit LEDs
GPIO connector with power control and indication for further system integration
Balanced high-quality analog inputs and amplifier outputs on detachable screw terminals
Specifications
General
| Number of amplifier channels | 2 |
| Max total output all channels driven | 800 W |
| Peak output voltage per channel | 100 V / 70 Vrms |
| Max. output current | 16 Arms |
Max output power (all channels driven)
| 2 ohms | 400 W |
| 4 ohms | 400 W |
| 8 ohms | 400 W (requires the “70 V” mode for the RSL, “Lo-Z” gives 200 W) |
| 16 ohms | 290 W (requires the “70 V” mode for the RSL, “Lo-Z” gives 100 W) |
| 70 V | 400 W |
| 100 V | Can deliver 400 W to a 100 V load tapped at 800 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 | 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 defining limit and gain (per channel) | 2 pos: Lo-Z and 70 V |
| VPL for 70 V mode | 100 V |
| VPL for Lo-Z mode | 56.6 V |
| Sensitivity for stated power into 4 Ohm in Lo-Z mode | 4 dBu |
| Sensitivity for 70.7 V out in 70 V mode | 4 dBu |
| Sensitivity for stated power into 2 Ohm in Lo-Z mode | 1 dBu |
| Sensitivity for stated power into 8 Ohm in 70 V mode | 2.1 dBu |
| Sensitivity for stated power into 16 Ohm in 70 V mode | 3.7 dBu |
| Gain in 70 V mode | 35.2 dB |
| Gain in Lo-Z mode | 30.3 dB |
| Level adjustment (per channel) | Rear panel potentiometer, from -inf to 0 dB |
Connectors and Buttons
| 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 | 70 – 265 VAC |
| Standby consumption | <1 W |
| Mains connector | IEC inlet |
Dimensions
| Dimensions | W: 483 mm (19”), H: 44 mm (1 U), D: 276 mm (10.9”) |
Weight
| Weight | 4.2 kg (9.3 lbs) |
Finish
| Finish | Dark grey aluminum front and black steel chassis |
