ESX POWER2 Active Module

The ESX POWER2 is a compact, high-performance Class D mono amplifier designed to retrofit and activate passive subwoofer enclosures. With up to 475 watts RMS at 2 ohms, the module is ideal for powerful in-car bass applications.

Thanks to modern Class D technology, the POWER2 achieves an efficiency of up to 84% and combines high output power with a compact design. The amplifier module is specifically designed for subwoofer enclosures with Quick-Connect terminals and can be retrofitted to compatible enclosures from ESX, Musway, and HiFonics.

For integration into modern in-car audio systems, the POWER2 features RCA and high-level inputs, as well as EPS PRO technology with switchable input impedances. The automatic power-on function allows operation even without a separate remote signal, provided that suitable signal or DC detection is possible.

A three-stage limiter allows for adjustment to different subwoofer power ranges. Additional features include an adjustable low-pass filter, subsonic filter, bass boost, and a phase switch. The included wired bass remote control allows you to conveniently adjust the bass level from the driver's seat.

Technical Specifications

General Characteristics

• Manufacturer: ESX

• Model: POWER2

• Product Type: Active Amplifier Module for Subwoofer Enclosures

• Amplifier Class: Digital Class D

• Number of channels: 1 (mono)

• Recommended speaker impedance: 2–8 ohms

• Efficiency: up to 84%

• Start-stop capable: Yes, up to 7 volts for 5 seconds
  
  

RMS output power at 14.4 volts

• 1 × 245 watts RMS at 4 ohms

• 1 × 475 watts RMS at 2 ohms
  
  

Audio Characteristics

• Frequency response (−3 dB): 7–120 Hz

• Signal-to-noise ratio: 102 dB

• Damping factor: greater than 200

• Total Harmonic Distortion (THD) at 1 watt RMS: less than 0.02%
  
  

Filters and Settings

• Subsonic filter: 5–35 Hz, 12 dB/octave

• Low-pass filter (LPF): 40–120 Hz, 12 dB/octave

• Bass Boost: 0–6 dB at 45 Hz

• Phase switch: 0° / 180°

• Three-stage limiter function

• Clipping LED for clipping indication

• External Bass Level Remote Control
  
  

Connections and Input Sensitivity

• RCA Low-Level Input

• High-level input for speaker signals

• Low-level input sensitivity: 0.2–5.5 volts

• Input sensitivity (high level): 0.5–15 volts or 1.5–40 volts

• Switchable high-level input range: 15 / 40 volts

• EPS PRO High-Level Technology

• Adjustable input impedances: 10 / 150 / 600 ohms

• Automatic power-on via DC voltage detection or audio signal

• Compatible with appropriate Quick-Connect terminals
  
  

Power Supply and Circuit Protection

• Operation on 12-volt vehicle electrical systems

• Equipment Circuit Breakers: 2 × 25 amps

• Start-Stop Support
  
  

Dimensions

• Width: 113 mm

• Height: 130 mm

• Depth: 125 mm

• Required mounting opening: 85 × 109 mm
  
  

Special Features

• Compact design for integration into subwoofer enclosures

• High Energy Efficiency Thanks to Class-D Amplifier Technology

• Suitable for retrofitting compatible passive subwoofer enclosures

• Integration into factory-installed radios via high-level inputs

• EPS PRO for adaptation to various OEM radio systems

• Adjustable power limit to protect connected subwoofers

• Bass level adjustment via an external wired remote control