Stasys 218

Stasys 218

High power reflex loaded double 18" subwoofer

Key Features

  • 2400 Watts AES power handling
  • Optimally damped, minimal mass cabinet
  • 2 x 4" voice coil 18" low frequency drivers
  • 18 mm birch plywood construction

  • Overview
  • Specifications
  • Image Gallery
  • Documents


The Stasys 218 is a double 18" reflex loaded low frequency enclosure build around traditional principles but designed with Stasys philosophy and attention to detail.

In order to extract the maximum performance from the design, the heart of the 218’s 18 mm birch plywood enclosure was subjected to the same resonance mapping procedures as all other Stasys low frequency models. This practice has dictated the type of materials used around the enclosure, optimised the brace positioning, and minimised destructive nodal conditions. All of this adds up to a structurally superior housing with minimum mass, the least possible amount of cabinet coloration, and vastly increased output.

Transducer selection and integration is also critical when it comes to reflex enclosure design, so exhaustive comparative testing and evaluation led to the birth of a new 18” transducer with a high excursion 4" voice coil. The sonic properties of differing cone and surround combinations were studied, as well as differing coil topographies. Flux intensities and out of band abnormalities were also manipulated until the perfect combination was achieved.

The marriage of a technologically advanced enclosure with esoteric transducer performance applied with superlative tuning techniques has resulted in a phenomenal package with state-of-the-art performance that has well and truly left tradition behind.


Frequency Response32 Hz - 200 Hz ±3 dB
Efficiency101 dB 1w/1m
Crossover Point70 Hz - 160 Hz, 24 dB/oct
Impedance4 ohms
Power Handling2400 Watts AES
Maximum Output134 dB cont, 140 dB peak
Driver Configuration2 x 18" LF
DispersionArray dependent
Connectors2 x 4-pole speakON™ NL4
Height586 mm (23.1")
Width1020 mm (40.2")
Depth775 mm (30.5")
Weight89 kg (195.8 lbs)
Enclosure18 mm birch plywood
GrillePerforated steel with foam filter

Specifications and appearance are subject to change without notice.

Image Gallery

The following high resolution images are available for download

Document Downloads

The following documents / drawings are available for download


  • High Impact Nightclub
  • Indoor / Outdoor Dance Events
  • Large Scale Touring

High Impact Nightclub

Uppermost on any club designer's agenda is the creation an unforgettable aural and visual experience for today's brand-aware club goers, and therefore a truly state-of-the art sound system is essential to deliver that promise. Void Acoustics' Incubus loudspeakers not only push the boundaries of utmost fidelity and distortion-free sound levels, but also unmistakably radical aesthetics that enhance any interior.

Indoor / Outdoor Dance Events

In recent years, large dance music events have exploded in popularity. Attracting visitors means having the biggest DJs, brightest lights and of course the best sound systems which money can buy. A Void system will ensure that the audience never loses the impulse to dance and the experience is a pure connection with the music unlike any other.

Large Scale Touring

There’s a lot more to delivering great festival and arena sound to large audiences than just audio quality – truck pack, transportation and handling, reduced system size, ease and speed of rigging, optimally configured amplifier packages and intelligent processing – these qualities are found in abundance in Void’s tour sound loudspeaker systems.