Lab Gruppen E 20:2 2,000 Watt Amplifier with 2 Flexible Output Channels for Installation Applications

Product Overview

The Lab Gruppen E 20:2 is a 2,000-watt, 2-channel installation amplifier built for commercial AV systems where reliable high-output power and flexible impedance configuration are required in a 1RU chassis. Delivering 2 x 1,000 W per channel across Lo-Z (2–16Ω) and Hi-Z (70 V/100 V) operation, the E 20:2 is suited for driving paired main loudspeakers, subwoofers, or two independent zones in conference rooms, houses of worship, and commercial meeting spaces. Energy Star certification and IDEEA Class-D technology reduce lifetime operating costs.

Product Description

The E 20:2 sits at the mid-tier of Lab Gruppen's 2-channel E Series installation amplifier range, offering 2,000 W total output with 1,000 W per channel available at 2Ω, 4Ω, or 8Ω Lo-Z, or at 70 V and 100 V Hi-Z. Each channel is independently configurable via the rear-panel RSL switch, allowing one channel to operate as a 70 V distributed ceiling speaker driver while the other powers a direct-drive low-impedance loudspeaker — all without additional transformers or external re-configuration.

The IDEEA output stage delivers 2,000 W from a 600 W mains draw at full output, achieving high efficiency through the Class-D topology. Standby consumption is under 2.5 W, with automatic standby activation after 20 minutes without input signal and automatic power-on when signal returns — satisfying Energy Star certification requirements and reducing idle consumption in large-scale multi-amplifier rack systems.

The Rail Sense Limiter (RSL) monitors per-channel output rail voltages dynamically, adjusting limiting in real time to minimize clipping and protect connected loudspeakers under variable load and asymmetric channel conditions. Rear-panel per-channel level trimmers and signal LEDs allow field commissioning without external measurement equipment. The GPIO connector provides contact-closure interfaces for control system integration, enabling remote power state monitoring and switching via Crestron, AMX, or building management systems.

Key Features

• 2,000 W Total Output, 2 Channels — 2 x 1,000 W into 2Ω, 4Ω, or 8Ω; 2 x 1,000 W into 70 V or 100 V Hi-Z; 2 x 625 W into 16Ω.
• Per-Channel Lo-Z / Hi-Z Configuration — Each channel independently set for low-impedance or constant-voltage operation via rear-panel RSL switch.
• IDEEA Class-D Output Stage — 600 W mains draw at full output; >80% operating efficiency reduces rack power and thermal demands.
• Energy Star Certified — <2.5 W standby; auto-standby and auto-power-on for unattended installation operation.
• Rail Sense Limiter (RSL) — Dynamic per-channel limiter reduces clipping under asymmetric or mixed-load conditions.
• Asymmetric Channel Loading — 2,000 W total output distributable unequally across channels to match application requirements.
• Built-In 50 Hz High-Pass Filter — Per-channel rear-panel switch for speaker protection in distributed systems.
• GPIO Integration — Contact-closure GPI/GPO for control system power management.
• 1RU Form Factor — 44 x 483 x 417 mm, 8.1 kg; standard IEC 100–240 VAC input.

Typical Applications

• Conference room and boardroom stereo or dual-zone audio
• House of worship fill speaker and zone amplification
• Multi-purpose room and training room audio systems
• Government and commercial building PA and background music
• Huddle room and small meeting space distributed audio

Technical Specifications

Frequently Asked Questions

Q: How does the E 20:2 compare to the E 20:4?

A: Both deliver 2,000 W total. The E 20:2 concentrates that power across 2 channels (1,000 W each), while the E 20:4 splits it across 4 channels (500 W each). The E 20:2 is better suited for two-zone or stereo applications requiring higher per-channel output; the E 20:4 is preferable for four-zone distributed audio at moderate power per zone.

Q: Does the E 20:2 support 100 V constant-voltage systems?

A: Yes. Both channels can operate at 100 V Hi-Z as well as 70 V, making the E 20:2 compatible with European-standard constant-voltage distribution systems.

Q: Can the two channels be used independently in different impedance modes?

A: Yes. Each channel has its own independent RSL mode switch, so one channel can drive a 70 V ceiling speaker network while the other simultaneously drives a 4Ω low-impedance loudspeaker.

Q: Is external DSP required?

A: The E 20:2 is an analog installation amplifier without onboard DSP. Signal processing such as EQ, crossover, or delay should be handled by an upstream DSP processor or digital mixer connected to the balanced analog inputs.

Q: What is the standby power consumption?

A: Standby consumption is less than 2.5 W. The unit enters standby automatically after 20 minutes without an input signal and powers on when signal returns, satisfying Energy Star certification requirements.