ESX Q-Four v3 (24 volts)

The ESX Q-FOUR V3 24V from the QUANTUM series is a compact and powerful 4-channel digital amplifier designed specifically for vehicles with a 24-volt electrical system. This makes the power amplifier particularly suitable for use in trucks, tour buses, and other commercial vehicles.

The redesigned V3 generation combines modern Class D amplifier technology with high efficiency and improved power output. Thanks to Constant Power technology, the amplifier delivers reliable output power at both 4 ohms and 2 ohms.

With its compact dimensions of just 150 x 50 x 220 mm, the Q-FOUR V3 can be easily integrated even in tight spaces. The solid die-cast aluminum heat sink ensures effective heat dissipation, while the high-quality acrylic cover with a piano finish provides an elegant look.

The built-in high-level inputs with an EPS fault protection system allow connection to factory-installed car stereos. An automatic power-on function and extensive filtering options facilitate integration into various audio systems.

Technical Specifications

Amplifier Power (RMS)

• Output power at 4 ohms: 4 x 100 watts RMS

• Output power at 2 ohms: 4 x 120 watts RMS

• Output power (bridged at 4 ohms): 2 x 200 watts RMS

Maximum Output Power

• Output power at 4 ohms: 4 x 200 watts MAX

• Output power at 2 ohms: 4 x 240 watts MAX
  
  

General Technical Specifications

• Amplifier Type: 4-Channel Digital Amplifier

• Amplifier Class: Class D

• Series: ESX QUANTUM

• Model: Q-FOUR V3 24V

• Operating voltage: 24 volts DC

• Permissible operating voltage range: 20–32 volts DC

• Ground connection: Negative vehicle ground

• Speaker impedance: 2–8 ohms per channel

• Frequency response: 10–20,000 Hz (-3 dB)

• Total Harmonic Distortion (THD): less than 0.1% at 1 kHz

• Signal-to-noise ratio: over 90 dB

• Input sensitivity: 0.4–6 volts

• RCA input impedance: 20 kOhm

• Input impedance (high level): 20 ohms

• Efficiency: up to 84%

• Technology: Constant Power
  
  

Crossover Networks and Sound Settings

• High-pass filter (CH1/2): 20–4,000 Hz

• High-pass filter (CH1/2) slope: 12 dB/octave

• High-pass filter (CH3/4): 10–500 Hz

• High-pass filter (CH3/4) slope: 12 dB/octave

• Low-pass filter (CH3/4): 50–4,000 Hz

• Low-pass filter slope (CH3/4): 12 dB/octave

• Bandpass mode (CH3/4): possible by combining a high-pass and a low-pass filter

• Bass Boost (CH3/4): 0–12 dB

• Bass boost frequency: 45 Hz

• Dupe Mode: Signal transmission from CH3/4 to CH1/2
  
  

Connections and Features

• RCA inputs: 4 channels (CH1–CH4)

• High-level inputs: 4 channels via the included connector

• EPS (Error Protection System): built-in

• Automatic power-on function: via high-level inputs

• Start/Stop function: compatible

• Bridge operation: possible

• Protection circuit: against overheating, short circuits, and low speaker impedance

• Power indicator: green power LED

• Protection indicator: red "Protect" LED

• Internal fuses: 2 x 15 amps

• Heat sink: solid die-cast aluminum

• Cover: Acrylic with a piano finish
  
  

Dimensions

• Width: 150 mm

• Height: 50 mm

• Length: 220 mm