Martin Audio SXC118 (SXC118B) compact cardiod subwoofer

4000W peak output - Black Durable Polyurea Coating Finish - 138dB peak SPL

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  • Martin Audio SXC118
  • 5-year Limited Warranty

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Increased impact and low frequency performance

Martin Audio SXC118 (MAU-SXC118B) compact cardiod subwoofer provides excellent low-frequency output in a compact enclosure, extending the system response down to 47Hz. Featuring a long-excursion 18" driver, this subwoofer maximizes output while reducing compression and distortion even when used at very high levels. The cabinet is built with high-quality birch laminate and finished with a durable polyurea coating. With twin grab handles, a Zinctec grille, interlocking skids (prevent movement when stacked), a threaded plate in the top for pole-mounting, and flying inserts, Martin Audio has built this sub to be versatile, rugged, and easy to use. The product is supplied as standard without cabinet wheels, but they are available as an accessory. Designed for touring and fixed installations, an input board cover accessory (not included) makes the unit fully weather resistant and suitable for permanent outdoor usage.


  • Compact, direct radiating subwoofer
  • 18” (460㎜)/4” (100㎜) voice coil, long excursion, ferrite magnet, waterproof cone
  • High output capability
  • Tour-grade plywood enclosure with flying inserts
  • Rear facing 14” (356㎜)/3.5” (88㎜) voice coil driver

Martin Audio was founded in 1971 by engineering maestro Dave Martin. Renowned for integrity in design, technical excellence and the longevity of its products, Martin Audio takes system creation into a further dimension. Their mission is for every member of the audience to enjoy an exceptional sonic experience faithfully reproducing the artist's performance.

Specifications for the Martin Audio SXC118

{ "TYPE": "Compact, cardioid subwoofer", "FREQUENCY RESPONSE (Measured on-axis in half (2pi) space at 2 metres, then referred to 1 metre.)": " 43Hz – 150Hz ±3dB, -10dB @ 34Hz ", "DRIVERS": "18” (460mm)/4” (100mm) voice coil, long excursion, ferrite magnet, waterproof cone14” (356mm)/3.5” (88mm) voice coil, long excursion, neodymium magnet, waterproof cone", "RATED POWER (AES Standard ANSI S4.26-1984.)": "18”: 1000W AES, 4000W peak14”: 800W AES, 3200W peak", "SENSITIVITY (Measured in half (2pi) space at 2 metres with 2.83V input, using band limited pink noise, then referred to 1 metre.)": " 104dB ", "MAXIMUM SPL (Calculated at 1 metre.)": " 140dB peak ", "NOMINAL IMPEDANCE": "18”: 8Ω14”: 8Ω", "DISPERSION": " Cardioid ", " ENCLOSURE ": " Multi-laminate birch and poplar ply ", " FINISH ": " Textured black paint ", " PROTECTIVE GRILLE ": " Black HEX perforated steel ", " CONNECTORS ": " 2 x NL4 ", " PIN CONNECTIONS ": " 18”: +1, -1; 14”: +2, -2 ", " PINS CONNECTIONS ": " 18”: +1, -1; 14”: +2, -2 ", " FITTINGS ": "Two skids on base, with mating channels on topM20 top-mounted thread plate for pole mountingTwo bar handles on each sideFour fittings for optional transit cover16 x M10 Mounting Points16 x M8 inserts for optional castorsTwo bar handles on each side", " DIMENSIONS ": " (W) 635mm x (H) 603mm x (D) 824mm (952mm incl castors) (W) 25in x (H) 23.7in x (D) 32.4in (37.5in incl castors) ", " WEIGHT ": " 69kg (152lbs) 73kg (161lbs) incl castors " }

Research Materials for Martin Audio SXC118 (MAU-SXC118B)

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SXC118 (MAU-SXC118B) Specifications

SXC118 (MAU-SXC118B) Drawing

Martin SX Series Subwoofer Brochure

Martin SX Series Subwoofer User Guide

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