Martin Audio SX Series 15" Passive Cardioid Flown Subwoofer (White) - SXCF115-W

Martin Audio SKU: SXCF115-W
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Sale price$4,900.00


SXCF115 features a 15” (380mm) forward facing driver and a 12” (300mm) rear facing driver, each driven independently by separate amplifier channels and DSP. Each driver has its own chamber with optimised bass reflex porting. This arrangement produces a cardioid dispersion pattern which maximises the front radiation and reduces unwanted radiation behind the subwoofer.

The recommended iK42 amplifier optimises the DSP parameters for front and rear drivers to maximise the rear rejection — from 21dB at 43Hz to 28dB at 75Hz. This keeps low frequencies away from stages and walls as well as reducing reverberant energy in the room — greatly improving the low frequency response accuracy and impact of the whole system.

In front of the enclosure, the output from the two drivers is additive, delivering 137dB peak, an extra 2dB of output when compared with a conventional 1 x 15” subwoofer.

The SXCF115 integrates perfectly with WPM flown line arrays and TORUS 8 constant curvature arrays, as well an accompaniment for Martin Audio point source systems where low frequency pattern control is required. It can be used singly, stacked or flown, supported by accessories.

The enclosure is constructed from birch ply and finished with a hard-wearing textured paint. It is equipped with four grab handles and foam-backed perforated steel grilles protect the front and rear drivers. Interlocking skids prevent movement when stacked and a threaded plate in the top surface facilitates pole-mounting.

The addition of the input cover accessory makes the SXCF115 weather resistant and suitable for outdoor usage.


  • Live sound reinforcement
  • Fixed installations including live event venues and nightclubs
  • Theatre sound
  • Corporate AV events
  • Acoustically-challenging rooms
  • Compact, cardioid subwoofer
  • Front facing 15” (380mm)/4” (100mm) voice coil driver
  • Rear facing 12” (300mm)/4” (100mm) voice coil driver
  • Cardioid dispersion pattern
  • 28dB rear rejection at 75Hz
  • High output capability
  • Tour-grade plywood enclosure
TYPE Compact, cardioid subwoofer
FREQUENCY RESPONSE (1) 44Hz – 150Hz ±3dB, -10dB @ 36Hz
  • 15” (380mm)/4” (100mm) voice coil, long excursion, ferrite magnet, waterproof cone
  • 12” (300mm)/4” (100mm) voice coil, long excursion, neodymium magnet, waterproof cone
  • 15”: 1000W AES, 4000W peak
  • 12”: 800W AES, 3200W peak
MAXIMUM SPL (9) 137dB peak
  • 15”: 8 ohms
  • 12”: 8 ohms
DISPERSION (-6dB) Cardioid
ENCLOSURE Multi-laminate birch ply
FINISH Textured black paint
PROTECTIVE GRILLE Black HEX perforated steel
PIN CONNECTIONS (INPUT) 15”: +1, -1; 12”: +2, -2
PINS CONNECTIONS (LINK) 15”: +1, -1; 12”: +2, -2
  • Two skids on base, with mating channels on top
  • M20 top-mounted thread plate for pole mounting
  • Two bar handles on each side
  • 16 x M8 inserts for optional castors
  • (W) 500mm x (H) 552mm x (D) 810mm (938mm incl castors)
  • (W) 19.69in x (H) 21.71in x (D) 31.90in (36.94in incl castors)
  • 61.5Kg (136lbs), 65Kg (143lbs) incl castors



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