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£2,100.00 Inc VAT

18″ Ultra Compact Subwoofer

  • Compact, direct-radiator subwoofer
  • 1 x 18” (460mm) driver with 4” (100mm) voice coil
  • Water resistant cone
  • Large ports for reduced air noise
  • Perforated steel grille
  • Black or white standard colour options
  • Optional flying points
Martin Audio

Categories: , SKU: SP/SUB/MAR35

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.

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 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 polyurea coating and equipped with a Zintec grille, twin grab handles, skids, flying inserts for installation and a threaded pole socket for pole-mounting point source loudspeakers or up to 4 WPM enclosures as a simple plug-and-play system.

The product is supplied as standard without cabinet wheels, but they are available as an accessory.

Finished in black (RAL9005) or white (RAL9016) textured paint as standard

TYPE Compact, 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 Durable Polyurea Coating
PROTECTIVE GRILLE Black perforated Zintec
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
  • 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
  • 16 x M8 inserts for optional castors
  • (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 43.5kg (96lbs) w/o castors 47kg (104lbs) with castors


Martin Audio

Martin Audio


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