Martin Audio SX218 2 x 18-Inch Passive Direct Radiating Subwoofer

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.

Applications
Touring sound reinforcement for small and medium-size venues
Fixed installations in concert halls, theatres, ballrooms and HoW
Sports stadium, arena installations & corporate AV events
Outdoor restaurant, bar and hotel entertainment areas
Concourses and Theme Parks

Key Features

• Dual-driver, direct radiating subwoofer
• 2 x 18” (460mm)/4” (100mm) voice coil, long excursion, ferrite magnet, waterproof cone
• Very high output capability
• Tour-grade plywood enclosure with flying inserts

Technical Specifications

TYPE
Dual-driver, direct radiating subwoofer
FREQUENCY RESPONSE
35Hz - 150Hz ±3dB, -10dB @ 30Hz
DRIVER
2 x 18” (460mm)/4” (100mm) voice coil, long excursion, ferrite magnet, waterproof cone
RATED POWER
2000W AES, 8000W peak
SENSITIVITY
105dB
MAXIMUM SPL
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-
PINS 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