
The Martin Audio SX118+ is a compact, direct-radiating subwoofer designed for high-output audio reinforcement. Featuring an 18-inch driver and 6000W peak power handling, it delivers up to 137dB peak SPL with omni-directional or cardioid dispersion options. Procure.ae supplies this professional audio equipment across the UAE for venues and installations.
This subwoofer utilizes an 18-inch (460 mm) driver with a 4-inch aluminium voice coil to achieve 99.5 dB sensitivity. It handles 1500W AES power, reaching a maximum SPL of 137dB peak within a frequency response range of 38Hz to 100Hz ±3dB. The enclosure is constructed from multi-laminate birch ply with protective stainless steel grilles and IP21 rating for durability in various environments.
The SX118+ supports omni-directional or cardioid dispersion when paired, making it suitable for touring sound reinforcement and fixed installations in concert halls. It features three NLT4MPXX-BAG connectors for reliable signal linking and includes mounting points with two base skids for transport. Recommended amplifiers include the iK41, iK42, and iK81 models to ensure optimal performance.
| Model | SX118+ |
| Type | Compact direct radiating reflex-loaded subwoofer |
| Frequency Response | 38Hz – 100Hz ±3dB, -10dB @ 31Hz |
| Impedance | 8 ohms |
| Max SPL | 131dB continuous, 137dB peak |
| Polar Pattern | Omni-directional or cardioid when paired |
| Sensitivity | 99.5 dB |
| Speaker Size | 18 in (460 mm) |
| Connector Type | 3 x NLT4MPXX-BAG (one front, two rear) |
| Power Capacity (W) | 1500W AES, 6000W peak |
| Dimensions | 650 mm W x 603 mm H x 635 mm D |
| Finish | Textured black or white paint |
| Material | Multi-laminate birch ply enclosure, aluminium voice coil |
| Weight | 49.2 kg (109 lbs) |
| IP Rating | IP21 |
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.
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