Lab Gruppen E 40:2 - 2000W 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 40:2 is a high-performance 2-channel power amplifier designed for demanding commercial audio applications. Built with Lab Gruppen's renowned sonic excellence and rock-solid durability, this amplifier delivers superior audio output while maintaining high energy efficiency. The E 40:2 is ideally suited for large venues, conference halls, and distributed audio systems, offering the flexibility to drive a variety of speaker configurations, including both low impedance and constant voltage (70V/100V) systems. With its compact 1U rackmount form factor, the amplifier saves valuable rack space while delivering impressive power output and operational flexibility.

At the heart of the E 40:2 is Lab Gruppen's IntelliDrive Energy Efficient Amplifier (IDEEA) technology. This technology is based on a state-of-the-art Class D output stage, which ensures low distortion and high power output with minimal power draw. The amplifier's efficiency is further enhanced by Lab Gruppen's proprietary Rail Sensing Limiter (RSL), which dynamically adjusts the amplifier's output to match instantaneous load conditions, thereby preventing signal clipping. RSL also facilitates asymmetric channel loading, allowing the total available power to be distributed unequally across the two channels. This feature makes it possible to optimize system efficiency and inventory utilization, driving different types of loudspeakers (e.g., subwoofers and ceiling speakers) from the same amplifier.

The E 40:2 offers exceptional flexibility in terms of load compatibility. It can deliver 2000W per channel at 4 ohms, 1600W at 8 ohms, or 2000W in both 70V and 100V constant voltage modes. The amplifier also supports 70V and 100V output with a sensitivity of 4 dBu, making it suitable for a wide range of speaker configurations. With the ability to allocate power differently across channels, you can drive high-power subwoofers on one channel and ceiling loudspeakers on another, all while maintaining energy efficiency and sound quality.

The E 40:2 is Energy Star certified, ensuring that it meets strict energy efficiency standards. With a net operating efficiency of greater than 80%, the amplifier reduces running costs and minimizes heat generation, which in turn lowers the demands on your installation's mains distribution and cooling systems. An auto-standby function further reduces power consumption by automatically switching the amplifier to standby mode after 20 minutes of inactivity, consuming less than 2.5W in standby. The amplifier quickly powers back on when it detects an input signal, ensuring seamless operation without unnecessary energy waste.

Built-in protection circuits ensure that the E 40:2 continues to operate smoothly under various conditions. These fail-safe features include temperature protection and overload safeguards that ensure reliable performance, even under demanding conditions. Additionally, the amplifier includes a 50Hz high-pass filter, selectable per channel, providing an easy way to protect your loudspeakers from low-frequency signals that may cause damage. The rear panel also features convenient controls, including per-channel attenuation knobs, signal LEDs, and level adjustments for quick and easy setup and commissioning.

For cooling, the E 40:2 utilizes four temperature-controlled fans with front-to-rear airflow, ensuring that the amplifier stays cool and efficient even during extended use. The amplifier's compact design, robust performance, and energy efficiency make it an ideal choice for installations where space and power efficiency are essential, yet high performance is required.

The Lab Gruppen E 40:2 is a powerful, flexible, and energy-efficient amplifier that combines superior audio performance with the latest energy-saving technologies, making it the ideal solution for demanding commercial audio applications.

Features

• 2000W per channel at 4 ohms, with 70V/100V constant voltage compatibility for versatile speaker configurations
• Energy Star certified for superior energy efficiency and low lifetime running costs
• Lab Gruppen's IntelliDrive Energy Efficient Amplifier (IDEEA) technology for exceptional performance with low distortion
• Rail Sensing Limiter (RSL) for dynamic load adjustment and reduced signal clipping
• Asymmetric channel loading for optimized power allocation and system efficiency
• Auto-standby feature reduces power consumption to less than 2.5W when idle
• Built-in 50Hz high-pass filter for speaker protection and smooth operation
• Rear panel controls for per-channel attenuation, signal LEDs, and level adjustments
• Four temperature-controlled fans with front-to-rear airflow for efficient cooling
• Dimensions: 1.7 x 19 x 16.4 inches
• Weight: 17.8 lbs
• Finish: Dark grey aluminum front and black steel chassis

Specifications

General

• Number of powered channels: 2
• Total output all channels driven: 4000 W
• Max output voltage per channel: 160 Vp / 113 Vrms
• Max output current per channel: 35.4 Arms
• Asymmetric load operation: Units are capable of delivering extra power to one channel while sending significantly less to the other. See "single ch. max" below the "all channels driven"

Sensitivity and Maximum Output Power (all channels driven)

• 2 Ω load: 3 dBu: 2000 W @ 70 V mode
• 4 Ω load: 3 dBu: 2000 W @ 100 V mode
• 8 Ω load: 4 dBu: 1600 W @ 113 V mode
• 16 Ω load: 4 dBu: 800 W @ 113 V mode
• 70 V load: 4 dBu: 2000 W @ 70 V mode
• 100 V load: 4 dBu: 2000 W @ 100 V mode

Sensitivity and Maximum Output Power (single channel max)

• 2 Ω load: 4 dBu: 2500 W @ 70 V mode
• 4 Ω load: 4 dBu: 3200 W @ 113 V mode
• 8 Ω load: 4 dBu: 1600 W @ 113 V mode
• 16 Ω load: 4 dBu: 800 W @ 113 V mode
• 70 V load: 4 dBu: 2450 W @ 70 V mode
• 100 V load: 4 dBu: 3500 W @ 100 V mode

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: >106 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

Limiters and Gain

• LIMIT switch (per channel): 3 positions: A, B and C
• Max output voltage, LIMIT switch pos A (70 V): 160 Vp / 113 Vrms
• Max output voltage, LIMIT switch pos B: 141 Vp / 100 Vrms
• Max output voltage, LIMIT switch pos C (Lo-Z): 100 Vp / 70 Vrms
• Gain in LIMIT switch pos A (70 V): 39.3 dB
• Gain in LIMIT switch pos B: 38.2 dB
• Gain in LIMIT switch pos C (Lo-Z): 35.2 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 50 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: Four fans, front to rear airflow, temperature controlled speed

Power

• Nominal voltage: 100 - 240 VAC
• Power consumption: 1000 W
• Standby consumption: <2.5 W
• Mains connector: Standard IEC receptacle

Physical

• Dimensions (HWD): 1.7 x 19 x 16.4 inches
• Weight: 17.8 lbs
• Finish: Dark grey aluminium front and black steel chassis