ESX Q-Four v3

The ESX Q-FOUR V3 from the QUANTUM Q series is a compact 4-channel digital amplifier that combines high output power with a space-saving design. Thanks to its redesigned Class D technology, the third generation offers improved power output and high efficiency.

With a footprint of just 150 × 220 mm, the power amplifier can be easily integrated even in tight spaces. The solid die-cast aluminum heat sink ensures reliable heat dissipation, while the elegant acrylic cover with a piano finish provides a high-quality look.

Thanks to its built-in high-level inputs with an EPS fault protection system and automatic power-on function, the amplifier is suitable for both retrofitting existing factory radios and for custom car audio systems. Constant-Power technology, flexibly adjustable crossovers, and the ability to bridge the channels allow for a variety of speaker configurations.

Technical Specifications

General Characteristics

• Model: ESX Q-FOUR V3

• Product Series: QUANTUM Q

• Amplifier Type: 4-Channel Digital Amplifier

• Amplifier Class: Class D

• Operating voltage: 12-volt vehicle electrical system

• Technology: Constant Power

• Efficiency: up to 84%

• Cooling: Solid die-cast aluminum heat sink

• High-level inputs: Yes

• EPS (Error Protection System): Yes

• Automatic power-on function: Yes

• Compatible with automatic start-stop system: Yes

• Housing Cover: Acrylic cover with a piano finish
  
  

RMS Output Power

• 4 × 100 watts RMS at 4 ohms

• 4 × 120 watts RMS at 2 ohms

• 2 × 240 watts RMS bridged at 4 ohms
  
  

Crossover Networks and Sound Settings

• High-pass filter (HPF) Channel 1/2: 20–4,000 Hz

• High-pass filter (HPF) Channel 3/4: 10–500 Hz

• Low-pass filter (LPF) Channel 3/4: 50–4,000 Hz

• Bass Boost: 0 to +12 dB

• Dupe Mode: Transmitting the signal from Channel 3/4 to Channel 1/2

• Channel bridging: Possible
  
  

Dimensions

• Width: 150 mm

• Height: 50 mm

• Length: 220 mm

• Base dimensions: 150 × 220 mm
  
  

Special Features

• Compact design for space-saving installations

• Efficient Class D Amplifier Technology

• Constant-Power Technology for Consistent Power Output

• Four amplifier channels for front and rear speakers

• Bridge Mode for More Powerful Speaker Configurations

• Integrated active crossovers for custom frequency adjustment

• High-level inputs for integration into factory-installed audio systems

• EPS Fault Protection System for Connection to Compatible OEM Radios

• Automatic activation via a high-level signal

• Start-Stop Compatibility

• High-quality housing with an acrylic cover