Lab.Gruppen E404 Power Amplifier

4000 Watt Amplifier with 4 Flexible Output Channels for Installation Applications

The E 40:4 has smart green credentials delivering low lifetime cost of ownership.

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 100 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 and a number of 70 V ceiling loudspeakers on the second channel. • 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

Features

• 4,000 W amplifier carrying 4 flexible output channels in a high power density 1 rack unit form factor saves rack space and system cost
• Energy efficient for supreme green credentials and exceptionally low lifetime running costs
• 4 x 900 Watts into 2 Ohms, 4 x 1,000 Watts into 4 Ohms, 4 x 1,000 Watts into 8 Ohms, 4 x 625 Watts into 16 Ohms, 4 x 1,000 Watts into Hi-Z 70 V, 4 x 1,000 Watts into Hi-Z 100 V
• 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 installation's mains distribution and cooling systems
• IDEEA output 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 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