Martin Audio SXH218 2 x 18-Inch Passive Hybrid Horn/Reflex Subwoofer: Subwoofer Powerhouse for Maximum Bass Impact
The Martin Audio SXH218 subwoofer redefines low-end performance, delivering earth-shaking 148dB peak output at 1 meter. Ideal for large-scale sound reinforcement applications and premium permanent installations like nightclubs, the SXH218 excels as both a standalone solution or seamlessly integrated with WPS, WPC, and WPL arrays.

Its innovative Hybrid horn/reflex design combines the forceful punch of a bass horn with the extended low-frequency response of a reflex enclosure. This translates to significantly higher output levels compared to traditional reflex subwoofers. The SXH218 boasts a frequency response of 32Hz to 150Hz (+/- 3dB), ensuring powerful and accurate bass reproduction. Dual 18-inch (460mm) long-excursion drivers with 4.5-inch (115mm) voice coils and neodymium magnets provide the driving force behind the subwoofer's exceptional performance. Water-resistant cones and triple roll surrounds ensure reliable operation even in demanding environments.

Key Features

• Ultra-high output ground-stacked subwoofer
  
• Hybrid horn/reflex loading for maximum acoustic efficiency and low frequency extension
  
• Dual long-excursion 18” (460mm)/4.5” (115mm) voice coil neodymium drivers
  
• Forward or rear-facing operation for versatile placement options

Technical Specifications

TYPE
Hybrid horn/reflex subwoofer
FREQUENCY RESPONSE
32Hz - 150Hz ±3dB, -10dB @ 27Hz
DRIVER
2 x 18” (460mm)/4.5” (115mm) voice coil, long excursion, neodymium magnet, waterproof cone
RATED POWER
3000W AES, 12000W peak
RECOMMENDED AMPLIFIER
iKON iK42
SENSITIVITY
107dB
MAXIMUM SPL
148dB peak
NOMINAL IMPEDANCE
4Ω
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
PIN CONNECTIONS (INPUT)
Input +1/-1
PINS CONNECTIONS (LINK)
Refer to SXH218 datasheet or Input panel diagram for linking options
FITTINGS
Two skids on base, with mating channels on top
Four rear-mounted 100mm (4in) castors
6 x bar handles, 3 on each side
4 x fittings for optional transit cover
DIMENSIONS (INCL SKIDS)
(W) 1112mm x (H) 609mm x (D) 1023mm (1151mm incl. castors)
(W) 43.8in x (H) 24in x (D) 40.3in (45.3in incl. castors)
WEIGHT
116kg (256lbs), with castors 120kg (265lbs)