I Agree

We use cookies to deliver our services. By using our website, you agree to the use of cookies as described in our Cookie Policy.

Wavefront PrecisionInstalled SoundLive Sound


Compact, Direct Radiating Subwoofer

Wavefront Precision SX118 Subwoofer
Where to Buy or Rent

The SX118 is a compact, high performance subwoofer that extends the low frequency operating range of the system to 47Hz and provides exceptional low frequency output for such a compact enclosure.


  • Compact, direct radiating subwoofer
  • 18” (460mm)/4” (100mm) voice coil, long excursion, ferrite magnet, waterproof cone
  • High output capability
  • Tour-grade plywood enclosure with flying inserts


  • Live sound reinforcement
  • Theatre sound
  • Corporate AV events

An ideal partner for the WPM, it features a long-excursion 18” (460mm)/4” (100 mm) voice coil driver with a water-resistant cone and triple roll surround in a compact reflex enclosure.

The design of the 18” driver maximises output while minimising power compression and distortion, and the four reflex ports have a large frontal area to reduce turbulent air noise at very high levels. The enclosure is constructed from multi-laminate birch ply, finished with a durable textured coating and equipped with a steel grille, twin grab handles, skids, flying inserts for installation and a threaded pole socket for pole-mounting up to 4 WPM enclosures as a simple plug-and-play system.

Brochure Datasheet Settings [v4.1]
TYPECompact, direct radiating subwoofer
FREQUENCY RESPONSE (1) 47Hz – 150Hz ±3dB,
-10dB @ 41Hz
DRIVER 18” (460mm)/4” (100mm) voice coil, long excursion, ferrite magnet, waterproof cone
RATED POWER (2)1000W AES, 4000W peak
MAXIMUM SPL (9) 138dB peak
DISPERSION (-6dB) Omnidirectional/or Cardioid (paired)
ENCLOSURE Multi-laminate birch/poplar ply
FINISH Black textured paint
PROTECTIVE GRILLE Black perforated steel
PIN CONNECTIONS (INPUT) LF: +1, -1 Link through: +2, -2
PINS CONNECTIONS (LINK) LF: +1, -1 Link through: +2, -2
  • Two skids on base, with mating channels on top
  • Four rear-mounted 100mm (4in) castors
  • M20 top-mounted thread plate for pole mounting
  • 16 x M10 mounting points
  • 2 x bar handles, 1 on each side
  • 4 x fittings for optional transit cover
  • (W) 600mm x (H) 509mm x (D) 632mm
    (760mm including castors)
  • (W) 23.62in x (H) 20.04in x (D) 24.86in
    (29.90in including castors)
WEIGHT 47kg (104lbs)
Architectural Specs
Wavefront Precision SX118

The loudspeaker shall be a compact subwoofer consisting of an 18” reflex-loaded, long-excursion, low frequency transducer. The on-axis frequency response shall be 47Hz-150kHz +/- 3dB and the loudspeaker shall produce a maximum SPL of 138dB peak calculated at 1 metre.

Power handling shall be 1000W AES, 4000W peak. Rated impedance shall be 8 ohms. The rear connector panel shall be fitted with two NL4 type connectors and the loudspeaker shall be operated in conjunction with a dedicated controller amplifier.

The loudspeaker enclosure shall be constructed from multi-laminate plywood with a textured black coating. The drivers shall be protected by a perforated steel grille and the enclosure shall be fitted with a threaded pole-mount plate, bar handles, skids and flying inserts.

Dimensions including skids, excluding castors (W x H x D) shall be 600mm x 509mm x 632mm (23.6in x 20in x 24.9in). Dimensions including skids and castors (W x H x D) shall be 600mm x 509mm x 760mm (23.6in x 20in x 29.9in). Weight shall be 47kg (104lbs).

The loudspeaker shall be the Martin Audio SX118.

Martin Audio Wavefront Precision SX118 Tech Drawing

Technical Drawings for Wavefront Precision SX118.
All information is Copyright. Martin Audio Ltd.


Available in this Series

How Can We Help?

If you have an audio project, whether that’s a Live Event or an Installation, and would like some expert advice or interested in a demo, please register your details

Get Project Advice
Return to Site

All material © 2017.
Copyright Martin Audio Ltd.
Subject to change without notice.
Martin Audio Ltd. Reg. No. 4824341

Martin Audio and the Martin Audio Logo are trademarks of Martin Audio Ltd and are registered in the United Kingdom, United States and other countries.