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Active subwoofer system

The EX1.8 is a high-output single 18" subwoofer housing a revolutionary VHD technology neodymium woofer. The EX1.8 features an impressive 1000 watts of power courtesy of KV2 Audio’s switching amplifier technology and provides a very firm foundation on which to build a powerful EX system or as a standalone subwoofer for any existing system.


  • Professional, Baltic birch construction with wear-resistant polymer coating

  • 131dB sustained output, 134dB peak

  • 1000W high efficiency, current-enhancing, switching, low-frequency amplifier

  • Complete on-board subwoofer management, including equalization, crossover filters, amplifier overdrive protection, output level, and phase controls

  • Excellent reproduction of bass frequencies with high transient content at high output levels

  • Stereo or Mono inputs with through signal outputs and 120Hz High Pass outputs 18" high output, low-frequency woofer driver with 4" (100 mm) inside/outside, epoxy baked, high temperature, voice coil assembly, and neodymium magnetic structure

  • Two recessed side handles for simplified handling and carrying

  • Acetyl copolymer, high impact, low friction feet are located on two sides, allowing lock-in and easy cabinet movement

  • Five internal corner braces with four M10 suspension points

  • M20 top hat for pole mounting applications

  • LED indicators for signal present, limiter, thermal condition, and power ON status


Specifically designed to accompany any of the EX range as a true full-range option

  • High-powered portable PA

  • Fixed installations

  • Scalable into larger systems

System Acoustic Performance

Max SPL Long-term: 131dB

Max SPL Peak: 137dB

-3dB Response: 30Hz to 125Hz

-10dB Response: 27Hz to 125Hz

Crossover Point: 125Hz

Low-Frequency Section

Acoustic Design: Asymmetrical Bandpass

Woofer Size / Voice Coil Diameter / Design: 18" / 4" / Inside Outside

Diaphragm Material: Epoxy Reinforced Cellulose

Magnet Type: Neodymium

Low-Frequency Amplifier Specification

Type: High efficiency, Low frequency, Current-enhancing switch mode

Rated Continuous Power: 1000W

Distortion: <0.05%

Signal Input

Input Channels: 2

Input Sensitivity: 1.0V RMS

Input Impedance: 20 kΩ

Signal Output

Signal Output Channels: Mid/High, Through


Input Level Control: -6 - +6dB

Phase: 0° / 180°

RMS Limiter: YES

Indicators: Power ON/Thermal, Limiter

Power Requirements

Power Connector: Neutrik PowerCon®

Operating Voltage Range: 100 to 120V@60Hz | 205 to 240V@50Hz | 225 to 260V@50Hz

Recommended Amperage: 10A 115V | 5A 230V | 5A 250V


Cabinet Material: Baltic birch

Handles: 2

Pole Mount: M20

Color: "Orange peeled" Matt Black or any RAL

Physical Dimensions

Height: 612 mm (24.1")

Width: 700 mm (27.56")

Depth: 750 mm (29.52")

Weight: 65 kg (143.3lbs)

Product code

  • KVV 987 223 - EX1.8 250V

  • KVV 987 007 - EX1.8 230V

  • KVV 987 008 - EX1.8 115V

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