SX SeriesInstalled SoundLive Sound


15" Passive Cardioid Flown Subwoofer

SXCF115 Compact, Cardioid Flown Subwoofer
Where to Buy or Rent

Designed for touring sound and installations, the SXCF115 is a compact, high performance cardioid subwoofer which be flown as part of a WPM or TORUS 8 array, or ground-stacked separately.


  • 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


  • Live sound reinforcement
  • Fixed installations including live event venues and nightclubs
  • Theatre sound
  • Corporate AV events
  • Acoustically-challenging rooms

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.

User guide Brochure Datasheet
TYPECompact, 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
Architectural Specs
Martin Audio SXCF115

The loudspeaker shall be a compact cardioid subwoofer consisting of a 15” reflex-loaded transducer radiating to the front of the enclosure and a 12” reflex-loaded transducer radiating to the rear. The transducers shall be driven independently by separate channels of a dedicated controller amplifier.

Power handling of the 15” transducer shall be 1000W AES, 4000W peak and power handling of the 12” transducer shall be 800W AES, 3200W peak. Rated impedance of each transducer shall be 8 ohms. The on-axis frequency response shall be 44Hz- 150kHz +/- 3dB and the loudspeaker shall produce a maximum SPL of 137dB peak calculated at 1 metre.

The loudspeaker enclosure shall be constructed from multi- laminate birch ply with a textured 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 support for flyware. The rear connector panel shall be fitted with two NL4 type connectors.

Dimensions including skids, excluding castors (W x H x D) shall be 500mm x 552mm x 810mm (19.69in x 21.71in x 31.90in). Dimensions including skids and optional castors (W x H x D) shall be 500mm x 552mm x 938mm (19.69in x 21.71in x 36.94in). Weight excluding castors shall be 61.5Kg (136lbs). Weight including optional castors shall be 65Kg (143lbs).

The loudspeaker shall be the Martin Audio SXCF115.

WPMSXGRIDT / WPMSXGRIDT-W.Touring Flying Frame for WPM andSXCF115, Available in black or white
WPMSXGRIDT / WPMSXGRIDT-W.Touring Flying Frame for WPM andSXCF115, Available in black or white


Touring Flying Frame for WPM and
SXCF115, Available in black or white

WHEELKIT.Pack of four4 x Wheels
WHEELKIT.Pack of four4 x Wheels


Pack of four
4 x Wheels

ASF20071.Wind-uptelescopic pole
ASF20071.Wind-uptelescopic pole


telescopic pole

WRKIT.Weatherised KitOption
WRKIT.Weatherised KitOption


Weatherised Kit

HTKCT06.M10 Eye Bolt10mm
HTKCT06.M10 Eye Bolt10mm


M10 Eye Bolt

Available in this Series

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Subject to change without notice.
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