ESX Q-ONE v3

The ESX Q-ONE V3 from the QUANTUM Q series is a compact digital mono amplifier that delivers impressive performance despite its small size. The updated V3 version combines modern Class D technology with high energy efficiency and numerous adjustment options for precise subwoofer control.

With an output power of up to 700 watts RMS at 1 ohm, the Q-ONE V3 is ideal for high-performance bass systems. The integrated Constant Power technology, the solid cast aluminum heat sink, and an efficiency of up to 84% ensure efficient power delivery.

Thanks to its compact design, with a footprint of just 150 x 220 mm, the amplifier can be easily integrated even in tight spaces. The high-level inputs, featuring an EPS fault protection system and an automatic power-on function, also allow for connection to a wide range of factory-installed car stereos.

For custom bass tuning, the system features an adjustable low-pass filter, a subsonic filter, a bass boost, and continuous phase control. A compact bass-level remote control allows you to conveniently adjust the subwoofer level from the driver's seat.

Technical Specifications

General Characteristics

• Manufacturer: ESX

• Model: Q-ONE V3

• Series: QUANTUM Q

• Amplifier Type: Digital Mono Amplifier

• Amplifier Class: Class D

• Number of channels: 1

• Technology: Constant Power

• Efficiency: Up to 84%

• Speaker impedance: 1–8 ohms

• Cooling: Solid cast aluminum heat sink

• Design: Acrylic cover with a piano finish

• Start/Stop capable: Yes
  
  

RMS Output Power

• 1 x 300 watts RMS at 4 ohms

• 1 x 500 watts RMS at 2 ohms

• 1 x 700 watts RMS at 1 ohm
  
  

Maximum Output Power

• 1 x 600 watts MAX at 4 ohms

• 1 x 1,000 watts MAX at 2 ohms

• 1 x 1,400 watts MAX at 1 ohm
  
  

Audio Characteristics

• Frequency response: 10–250 Hz (-3 dB)

• Total Harmonic Distortion (THD): less than 0.1% at 80 Hz

• Signal-to-noise ratio: over 90 dB

• Input sensitivity: 0.2–6 V

• Input impedance: 20 kOhm

• Input impedance (high level): 20 ohms
  
  

Crossover Networks and Adjustment Options

• Low-pass filter (LPF): 30–250 Hz

• Low-pass filter slope: 24 dB/octave

• Subsonic filter: 10–50 Hz

• Subsonic filter slope: 12 dB/octave

• Bass Boost: 0–12 dB

• Bass boost frequency: 45 Hz

• Phase control: 0–180°

• External bass level control: Yes
  
  

Connections and Features

• RCA inputs: 2 x RCA

• High-level inputs: Yes, via the included cable connector

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

• EPS (Error Protection System): Yes

• Remote connection: Yes

• Connection for bass level remote control: Yes

• Built-in protection circuit against overheating, short circuits, and low speaker impedance
  
  

Power Supply and Dimensions

• Operating voltage: 12 volts

• Permissible voltage range: 10–16 volts DC

• Ground connection: Negative vehicle ground

• Fuses: 2 x 25 A

• Width: 150 mm

• Height: 50 mm

• Length: 220 mm

• Dimensions (W x H x L): 150 x 50 x 220 mm
  
  

Features

• Compact Bass Level Remote Control

• High-level connection cable

• Automatic Power-On Function

• EPS Fault Protection System

• Adjustable Subsonic and Low-Pass Filter

• Variable Bass Boost

• Continuously Variable Phase Control