Lab Gruppen E 2:2 - 100W 2-Channel at 4-Ohm 70V/100V Power Amplifier with Screw Terminal Inputs/Outputs and Energy Star Certification in Dark Gray Finish

The Lab Gruppen E 2:2 is a highly efficient 100W, 2-channel amplifier that delivers exceptional performance in a compact 1U rackmount form factor. Designed with Energy Star certification, this amplifier is engineered to provide low energy consumption, ensuring minimal operating costs while maintaining Lab Gruppen's renowned sonic excellence. Perfect for professional installations in environments like retail spaces, convention centers, and corporate venues, the E 2:2 is an ideal solution for those requiring high-quality audio performance with a focus on energy efficiency.

At the heart of the E 2:2 is Lab Gruppen's IntelliDrive Energy Efficient Amplifier (IDEEA) technology, which is based on a proprietary Class D output stage. This advanced technology ensures high power output with low distortion, all while maintaining minimal current draw. The amplifier's energy-efficient design significantly reduces power consumption during non-operational cycles. After 20 minutes of inactivity, the E 2:2 automatically enters standby mode, drawing less than 1W of power, and instantly powers on when an input signal is detected. This helps reduce operational costs while contributing to environmental sustainability.

The E 2:2 is highly flexible, capable of driving both low impedance (2, 4, and 8 Ohms) and constant voltage (70V and 100V) loads. This flexibility makes it suitable for a wide variety of applications, whether it's driving full-range loudspeakers, ceiling speakers, or a combination of speaker types. The Rail Sensing Limiter (RSL) technology optimizes the output by dynamically adjusting for varying load conditions, ensuring high-quality audio output and reducing signal clipping. Additionally, the RSL enables asymmetric channel loading, where power can be distributed unevenly across the two channels to maximize efficiency based on system needs.

The E 2:2 also offers per-channel customization with rear-panel controls, including an attenuation knob and a signal LED for easy commissioning and adjustment. Each channel is equipped with a 50 Hz high-pass filter, which can be switched on or off, allowing further fine-tuning of the system's performance. This provides flexibility to optimize the amplifier for different types of loads and ensures the amplifier operates efficiently across a range of installations. The unit also features a temperature-controlled fan for efficient cooling, ensuring reliable performance even during extended use.

In addition to its energy efficiency and performance, the E 2:2 offers comprehensive protection with fail-safe circuit features to ensure continued operation under various operating conditions. The amplifier's cooling system is designed to maintain optimal performance with minimal noise, while the power control features allow easy integration with third-party systems via the GPIO connectors for remote power state monitoring and control.

Compact and versatile, the Lab Gruppen E 2:2 is the perfect solution for installations requiring flexibility, efficiency, and exceptional audio performance. With its high-quality components, advanced features, and Energy Star certification, the E 2:2 delivers superior value and reliability for a wide range of professional applications.

Features

• 100W per channel at 4Ω, 8Ω, 70V, or 100V for versatile speaker configurations
• Lab Gruppen IDEEA technology for high power output with low distortion and minimal energy consumption
• Energy Star certified for low operating costs and environmental sustainability
• Rail Sensing Limiter (RSL) optimizes output and reduces signal clipping for high-quality audio
• Asymmetric channel loading for efficient power distribution across channels
• THD < 0.1% and signal-to-noise ratio > 112 dBA for clear, accurate audio performance
• Per-channel attenuation knobs and signal LEDs for easy setup and monitoring
• Built-in 50 Hz high-pass filter, switchable per channel for customizable frequency response
• Temperature-controlled fan for efficient cooling and reliable operation
• Compact 1U rackmount design, weighing just 9.9 lbs
• Comprehensive fail-safe protection for continued operation under adverse conditions
• Dimensions: 17 x 19 x 10.9 inches
• Dark grey aluminum front panel with black steel chassis

Specifications

General

• Number of powered channels: 2
• Total output all channels driven: 200 W
• Max output voltage per channel: 100 Vp / 70 Vrms
• Max output current per channel: 7.7 Arms
• Asymmetric load operation: Units are capable of delivering extra power to one channel while sending significantly less to the other

Maximum Output Power (all channels driven)

• 2 Ω (Lo-Z mode): N/R
• 4 Ω (Lo-Z mode): 100 W
• 8 Ω (Lo-Z / Hi-Z mode): 100 W / N/R
• 16 Ω (Lo-Z / Hi-Z mode): 50 / 100 W
• 70 V (Hi-Z mode): 100 W
• 100 V (Hi-Z mode): 100 W into 100 V load tapped @ 200 W

Maximum Output Power (single channels max)

• 2 Ω (Lo-Z mode): N/R
• 4 Ω (Lo-Z / Hi-Z mode): 150 W
• 8 Ω (Lo-Z / Hi-Z mode): 100 W / N/R
• 16 Ω (Lo-Z / Hi-Z mode): 50/150 W
• 70 V (Hi-Z mode): 150 W
• 100 V (Hi-Z mode): 150 W into 100 V load tapped @ 300 W

Performance

• THD (20 Hz - 20 kHz @ 1 W into 8 Ω): <0.1%
• THD @ 1 kHz, 1 dB below clipping: <0.05%
• Signal-to-noise ratio: >112 dBA
• Channel separation (crosstalk) @ 1 kHz: >70 dB
• Frequency response: 2 Hz - 40 kHz
• Input impedance: 20 kΩ
• Input common mode rejection, CMR: 50 dB
• Output impedance: 25 mΩ

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 V
• Sensitivity for 70 V out in Hi-Z mode: 4 dBu
• Sensitivity for full power into 4/8/16 Ω 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 -∞ to 0 dB

Connectors and Switches

• Input connectors (per channel): 3-pin detachable screw terminals, electronically balanced
• Output connectors (per channel): 2-pin detachable screw terminals
• High pass filter: Fixed at 35 Hz, switchable per channel
• Power control: Can be used to go between standby and ON, unit will also enter standby automatically after 20 min of inactivity and resume when signal is present
• 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: Standard IEC receptacle

Physical

• Dimensions (HWD): 17 x 19 x 10.9 inches
• Weight: 9.9 lbs
• Finish: Dark grey aluminium front and black steel chassis