ESX QL800.1

The ESX QL800.1 from the QUANTUM QL series is a compact and powerful 1-channel Class D digital amplifier designed specifically for driving subwoofers. With an output power of up to 800 watts RMS at 1 ohm, the amplifier offers high power reserves in a particularly space-saving design.

Modern Class D circuit technology enables an efficiency of up to 92%. High-quality, audiophile-tuned components, a solid aluminum heat sink, and sturdy die-cast aluminum side panels ensure a reliable design.

Thanks to its built-in high-level inputs with an EPS protection system and automatic power-on function, the amplifier is also suitable for integration into factory-installed sound systems. Extensive adjustment options, such as a subsonic filter, low-pass filter, bass boost, and continuous phase adjustment, allow for custom tuning of the subwoofer.

A compact bass-level remote control for conveniently adjusting the bass level is included with the product.

Technical Specifications

General Characteristics

• Manufacturer: ESX

• Model: QL800.1

• Series: QUANTUM QL

• Amplifier Type: Monoblock / Single-Channel Amplifier

• Amplifier Technology: Class D Digital

• Number of channels: 1

• Minimum speaker impedance: 1 ohm

• Efficiency: up to 92%

• Power Supply: MOSFET PWM

• Heat sink: solid aluminum

• Side panels: Die-cast aluminum

• Protection circuit: 3-way

• Start-stop capability: 8.5 V and above
  
  

RMS output power at 14.4 V

• 1 × 325 watts RMS at 4 ohms

• 1 × 550 watts RMS at 2 ohms

• 1 × 800 watts RMS at 1 ohm
  
  

Maximum output power at 14.4 V

• 1 × 650 watts MAX at 4 ohms

• 1 × 1,100 watts MAX at 2 ohms

• 1 × 1,600 watts MAX at 1 ohm
  
  

Audio Characteristics

• Frequency range (−3 dB): 10–150 Hz

• Damping factor: greater than 220

• Signal-to-noise ratio: greater than 81 dB

• Total Harmonic Distortion plus Noise (THD+N): less than 0.01%

• Input sensitivity: 0.2–5 V
  
  

Filters and Settings

• Subsonic filter: 10–40 Hz, adjustable

• Low-pass filter (LPF): 40–150 Hz, adjustable

• Bass Boost: 0–18 dB at 40 Hz

• Phase adjustment: 0–180°, adjustable

• External bass level control: yes
  
  

Connections and Features

• Low-level RCA inputs: available

• High-level inputs: available

• EPS (Error Protection System): included

• Automatic power-on: via DC offset or audio signal

• RCA outputs: Stereo full-range outputs

• Bass Level Remote Control: included

• External fuse: 70 A
  
  

Dimensions

• Width: 226 mm

• Height: 43 mm

• Depth: 120 mm