Martin Audio SXHF218 Passive Subwoofer

The Martin Audio SXHF218 is a passive hybrid horn/reflex flown subwoofer designed for high-output professional audio installations. Featuring dual 18-inch neodymium drivers, it delivers 154dB peak SPL and 3,400W AES power. Procure.ae supplies this unit in the UAE for large-scale venues.

This subwoofer utilizes two 18-inch long-excursion neodymium drivers with 4.5-inch waterproof voice coils to achieve a frequency response of 32Hz to 150Hz ±3dB. It reaches 154dB peak SPL with a crest factor of 4 and 142dB continuous output. The nominal impedance is 4 Ohms, and it connects via three NLT4MPXX-BAG connectors for reliable signal transmission.

The enclosure is constructed from multi-laminate birch/poplar ply with a textured black finish and IP21 rating. It supports omnidirectional or cardioid dispersion when paired. Weighing 147.5kg with castors, it measures 1155mm in depth. This unit is ideal for outdoor festivals, stadiums, and theatres where deep, powerful bass is required.

Type

Passive Hybrid Horn/Reflex Flown Subwoofer

Weight

144 kg (317 lbs), 147.5 kg with castors

Key features

High Output Drivers

Features two 18-inch long-excursion neodymium drivers for powerful low-frequency reproduction.

Peak Sound Pressure

Delivers 154dB peak SPL with a crest factor of 4 for intense live sound applications.

Flexible Dispersion

Capable of omnidirectional or cardioid dispersion patterns when paired with compatible units.

Durable Enclosure

Built from multi-laminate birch/poplar ply with a hard-wearing textured black paint finish.

Professional Connections

Equipped with three NLT4MPXX-BAG connectors for secure and reliable audio input linking.

Mobility Fittings

Includes four castors, two skids, and six bar handles for easier transport and installation.

Specifications

General
Model	SXHF218
Type	Passive Hybrid Horn/Reflex Flown Subwoofer

Audio
Frequency Response	32Hz – 150Hz ±3dB, -10dB @ 27Hz
Impedance	4 Ohms
Max SPL	142dB continuous, 148dB peak, 154dB peak (crest factor 4)
Polar Pattern	Omnidirectional or Cardioid (paired)
Sensitivity	107dB

Connectivity
Connector Type	3 x NLT4MPXX-BAG

Power
Power Capacity (W)	3,400 W AES, 13,600 W peak

Physical
Dimensions	1148mm x 604mm x 1027mm (1155mm incl. castors)
Finish	Hard-wearing textured black paint (RAL 9005)
Material	Multi-laminate birch/poplar ply enclosure
Weight	144 kg (317 lbs), 147.5 kg with castors

Compliance
IP Rating	IP21

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This sheet is compiled from the product data held on procure.ae. For fully accurate and up-to-date figures, always refer to the manufacturer’s own specification sheet or datasheet for this model.

Specifications are provided by the manufacturer and may change without notice.

Pricing is quote-based. Contact Procure for current pricing and availability.

Delivery across the UAE and beyond, installation on request and manufacturer-backed warranty.