Martin Audio SX118
Direct Radiating
Compact 18" Subwoofer
Description
SX118 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 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.
By adding the input board cover accessory, SX118 is fully weather resistant and suitable for permanent outdoor usage.
SX118 Features
- 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
Resources & Downloads
Data sheets, manuals and resources for the SX118
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Quick Specs
- TYPE
- Compact, direct radiating subwoofer
- FREQUENCY RESPONSE
- 47Hz – 150Hz ±3dB, -10dB @ 41Hz
- DRIVER
- 18” (460mm)/4” (100mm) voice coil, long excursion, ferrite magnet, waterproof cone
- RATED POWER
- 1000W AES, 4000W peak
- SYSTEM AMPLIFIER
- iK42, iK81
Technical Specifications
- TYPE
- Compact, direct radiating subwoofer
- FREQUENCY RESPONSE
- 47Hz – 150Hz ±3dB, -10dB @ 41Hz
- DRIVER
- 18” (460mm)/4” (100mm) voice coil, long excursion, ferrite magnet, waterproof cone
- RATED POWER
- 1000W AES, 4000W peak
- SYSTEM AMPLIFIER
- iK42, iK81
- SENSITIVITY
- 102dB
- MAXIMUM SPL
- 138dB peak
- NOMINAL IMPEDANCE
- 8Ω
- DISPERSION (-6dB)
- Omnidirectional/or Cardioid (paired)
- ENCLOSURE
- Multi-laminate birch/poplar ply
- FINISH
- Durable Polyurea Coating
- PROTECTIVE GRILLE
- Black perforated Zintec
- CONNECTORS
- 2 x NL4 type
- PIN CONNECTIONS (INPUT)
- LF: +1, -1 Link through: +2, -2
- PINS CONNECTIONS (LINK)
- LF: +1, -1 Link through: +2, -2
- FITTINGS
- Two skids on base, with mating channels on top, M20 top-mounted thread plate for pole mounting, 16 x M10 mounting points2 x bar handles, 1 on each side, 4 x fittings for optional transit cover, 16 x M8 inserts for optional castors
- DIMENSIONS (INCL SKIDS)
- (W) 600mm x (H) 509mm x (D) 632mm (760mm including castors), (W) 24in x (H) 20.36in x (D) 25.26in (30.38in including castors)
- WEIGHT
- 43.5kg (96lbs) w/o castors 47kg (104lbs) with castors
- ACCESSORIES
- 16 x M8 inserts for optional castors, Input Board Cover, Transit Cover
SX118 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 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.
By adding the input board cover accessory, SX118 is fully weather resistant and suitable for permanent outdoor usage.
- 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
| TYPE | Compact, direct radiating subwoofer |
| FREQUENCY RESPONSE | 47Hz – 150Hz ±3dB, -10dB @ 41Hz |
| DRIVER | 18” (460mm)/4” (100mm) voice coil, long excursion, ferrite magnet, waterproof cone |
| RATED POWER | 1000W AES, 4000W peak |
| SYSTEM AMPLIFIER | iK42, iK81 |
| SENSITIVITY | 102dB |
| MAXIMUM SPL | 138dB peak |
| NOMINAL IMPEDANCE | 8Ω |
| DISPERSION (-6dB) | Omnidirectional/or Cardioid (paired) |
| ENCLOSURE | Multi-laminate birch/poplar ply |
| FINISH | Durable Polyurea Coating |
| PROTECTIVE GRILLE | Black perforated Zintec |
| CONNECTORS | 2 x NL4 type |
| PIN CONNECTIONS (INPUT) | LF: +1, -1 Link through: +2, -2 |
| PINS CONNECTIONS (LINK) | LF: +1, -1 Link through: +2, -2 |
| FITTINGS | Two skids on base, with mating channels on top, M20 top-mounted thread plate for pole mounting, 16 x M10 mounting points2 x bar handles, 1 on each side, 4 x fittings for optional transit cover, 16 x M8 inserts for optional castors |
| DIMENSIONS (INCL SKIDS) | (W) 600mm x (H) 509mm x (D) 632mm (760mm including castors), (W) 24in x (H) 20.36in x (D) 25.26in (30.38in including castors) |
| WEIGHT | 43.5kg (96lbs) w/o castors 47kg (104lbs) with castors |
| ACCESSORIES | 16 x M8 inserts for optional castors, Input Board Cover, Transit Cover |
About Penguin Media Solutions
Penguin Media Solutions is a professional audio, video, and lighting design, installation, and maintenance company based in Brighton, UK. As an authorised Martin Audio dealer, we provide high-performance AV systems for commercial venues, hospitality, and event spaces across Brighton, London, and South-East England.
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