Martin Audio SX218

The SX218 delivers very high output levels and superb transient performance with minimal distortion.

With an operating range of 35Hz-150Hz ± 3dB, it houses dual 18” long-excursion (460mm)/4” (100mm) voice coil drivers with water-resistant cones and triple roll surrounds. Each driver is rated to handle 1000 watts AES and has a magnet structure which is suspension engineered for maximum linear excursion.

The enclosure is constructed from multi-laminate birch ply and finished with a durable polyurea coating. Eight reflex ports provide a large frontal area to reduce turbulent air noise, and a perforated steel grille protects the drivers from damage. SX218 features a M20 pole mount insert for added versatility in deployment.

The product is supplied as standard without cabinet wheels, but they are available as an accessory.

By adding the input board cover accessory, SX218 is fully weather resistant and suitable for permanent outdoor usage.

Specifications

Type	Dual-driver, direct radiating subwoofer
Frequency Response (1)	35Hz – 150Hz ±3dB, -10dB @ 30Hz
Driver	2 x 18” (460mm)/4” (100mm) voice coil, long excursion, ferrite magnet, waterproof cone
Rated Power (2)	2000W AES, 8000W peak
Sensitivity (10)	105dB
Maximum SPL (9)	144dB
Nominal Impedance	2 x 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)	LF1: 1+, 1- LF2: 2+, 2-
Pin Connections (Link)	LF1: 1+, 1- LF2: 2+, 2-
Fittings	Two skids on base, with mating channels on top 24 x M10 mounting points 4 x bar handles, 2 on each side 4 x fittings for optional transit cover M20 Pole mount insert 16 x M8 inserts for optional castors
Dimensions (incl. Skids)	(W) 1093mm x (H) 537mm x (D) 792mm (920mm including castors) (W) 43in x (H) 21.1in x (D) 31.2in (36.2in including castors)
Weight	98.5kg (217lbs) w/o castors 102kg (225lbs) with castors