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Martin Audio SX210W 2x10" Slimline Passive Subwoofer 500W White
Martin Audio SX210W 2x10" Slimline Passive Subwoofer 500W White £767.00 inc VAT
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Martin Audio

Martin Audio SX118+ 18" Passive Subwoofer 1500W Black

Product code: 205900
Martin Audio SX118+ 18" Passive Subwoofer 1500W Black - Image 1
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    £4,157.00 inc VAT
    £3,464.17 ex VAT

    SKU: SX118+

    4 in stock (more available subject to additional lead time)

    4 available online
    More available from supplier in 1–3 weeks
    FREE delivery by ThursdayOrder by 3pm
    Click & Collect tomorrow ›Collect from us in Wembley
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    1 Year Manufacturer Warranty Included
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    About this Product

    The SX118+ is a compact, high‑performance subwoofer that extends the system’s low‑frequency operating range to 38 Hz and delivers impressive output for such a compact enclosure.

    SX118+ features a long‑excursion 18 in (460 mm) driver with a 4 in (100 mm) voice coil, a water‑resistant cone and a triple‑roll surround in a compact reflex enclosure. The driver design maximises output while minimising power compression and distortion. The four reflex ports have a large frontal area to reduce turbulent air noise at very high levels and the internal port geometry promotes laminar airflow.

    The enclosure is built from multi‑laminate birch ply, finished with a durable polyurethane coating and fitted with a stainless‑steel grille, twin grab handles, skids, M10 mounting points (with internal brackets) for installation and a threaded pole socket for pole‑mounting point‑source loudspeakers. Cabinet wheels and a transit cover are available as optional accessories.

    Compared with the SX118, the SX118+ is an all‑new design with enhanced performance and features. It is slightly larger, so it uses a new transit cover, and it includes new drivers and an improved cabinet.

    The SX118+ adds a third NL4 input connector on the front to improve cabling for subwoofers used in cardioid configurations. For outdoor use, you no longer need a WRKIT, but you must seal all three NL4 sockets. Use the correct cable connectors (NLT4FX or NLT4FX‑BAG) for connected sockets and install a Martin Audio weatherproof NL4 sealing plug in any unused socket.

    The SX118+ has two LED indicators, one on the front and one on the back, which you can illuminate via Vu‑Net software to identify each enclosure on the circuit. The rear LED is intended for use in cardioid setups.

    Full features

    • Compact, direct radiating reflex-loaded subwoofer
    • 18” (460mm) long-excursion driver, 4” (100mm) voice coil, neodymium motor, waterproof cone
    • High output capability
    • Tour-grade plywood enclosure with M10 mounting points
    • Available in black or white

    Full specifications

    • Type:  Compact, direct radiating reflex-loaded subwoofer
    • Frequency Response:  38Hz – 100Hz ±3dB, -10dB @ 31Hz
    • Driver:  18 in (460 mm) long‑excursion driver with 4 in (100 mm) aluminium voice coil, neodymium motor with T‑pole and demodulation ring, waterproof cone
    • Rated Power:  1500W AES, 6000W peak
    • Recommended Amplifier:  iK41, iK42, iK81, bridged for full output
    • Sensitivity:  99.5 dB
    • Maximum SPL:  131dB continuous, 137dB peak, 143dB peak with crest factor 4
    • Nominal Impedance:  8 ohms
    • Dispersion (-6dB):  Omni-directional or cardioid when paired
    • Enclosure:  Multi-laminate birch ply
    • Finish:  Textured black or white paint
    • Protective Grille:  Black or white perforated stainless steel
    • Environmental Testing:
      • IP rating IP21
      • MIL-STD-810H
      • ISO 4892-2 Solar Radiation
      • ISO 12944-6 Category C3 Corrosion resistance
    • LED Indicators:  Two LEDs: one front, one rear (rear LED for cardioid subs)
    • Connectors:
      • 3 x NLT4MPXX-BAG (one front, two rear)
      • IP54 weather‑resistant seal with NLT4FX, NLT4FX‑BAG or weatherproof NL4 sealing plug
    • PIN Connections (Input on Front) 1+/1-
    • PIN Connections (Input on Rear) 1+/1-
    • PIN Connections (Link on Rear):
      • 1+/1- linked to 1+/1-
      • 2+/2- linked to 2+/2-
    • Fittings:
      • Two skids on base, with mating channels on top
      • M20 top-mounted thread plate for pole mounting
      • 20 x M10 mounting points, 5 on top, 5 on bottom, 4 on left, 4 on right, 2 on back
      • 2 x bar handles, one on each side
      • 16 x M8 inserts for optional castors
    • Dimensions (incl skids):
      • (W) 650 mm x (H) 603 mm x (D) 634 mm (762 mm with castors)
      • (W) 25.6 in x (H) 23.7 in x (D) 25.0 in (30.0 in with castors)
    • Weight:  49.2 kg (109 lbs), 52.5 kg (116 lbs) with castors

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    We’re a working touring and events production company founded in 2019 by sound engineers with many years of experience. 

    We’re very selective about the products we sell. Everything we supply we use ourselves on our tours, events and productions. This means we can offer a level of buying advice and aftersales support that can’t be beaten.

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