Martin Audio X118B 18 Inch Passive Blackline Portable Subwoofer Loudspeaker The Blackline X118 is a compact, high performance subwoofer for use with BlacklineX Series full-range loudspeakers. It extends the low frequency operating range of the combined system to 42Hz and provides exceptional low frequency impact. It can be used singly, stacked or flown via integral M10 insets and features a long-excursion 18? (460mm)/4? (100 mm) voice coil driver in a compact reflex enclosure. Its four reflex ports have a large frontal area to reduce turbulent air noise at very high levels. The X118 enclosure is constructed from plywood and finished in black textured paint. An impact-resistant perforated steel grille protects the driver, and the enclosure has a 35mm pole-mount fitting in the top surface and two side handles for ease of handling. Rubber feet on the base of the enclosure resist movement and align with recesses in the top surface for stable stacking. When used with BlacklineX Series full-range systems, crossover and EQ functions can be performed by the DX0.5 system controller or by an iKON amplifier. Features: Compact, direct-radiator subwoofer 1 x 18? (460mm) driver with 4? (100mm) voice coil Large ports for reduced air noise Perforated steel grille 35mm pole-mount socket 8? nominal impedance M10 flying inserts Applications: Portable sound reinforcement Live music clubs Bars and restaurants Nightclubs Corporate AV events and conferences Weddings and parties Secondary stages at festivals HoW, leisure centers and retail outlets Specification: TYPE: Compact, direct radiating subwoofer FREQUENCY RESPONSE (5): 42Hz-150Hz 3dB, -10dB @ 36Hz DRIVER: 18? (460mm)/4? (100mm) voice coil, long excursion, ferrite magnet RATED POWER (2): 800W AES, 3200W peak SENSITIVITY (8): 101dB MAXIMUM SPL (9): 130dB continuous, 136dB peak (half space) NOMINAL IMPEDANCE: 8? DISPERSION (-6DB): Omnidirectional CROSSOVER: 80-120Hz active ENCLOSURE: Birch/poplar ply FINISH: Black textured paint PROTECTIVE GRILLE: Black perforated steel CONNECTORS: 3 x NL4 type PIN CONNECTIONS (INPUT): 1+/1- PIN CONNECTIONS (LINK): A: 1+/- to 1+/-, B: 2+/- to 1+/- FITTINGS: 16 x M10 inserts, pole-mount socket, 2 x bar handles, provision for castors DIMENSIONS: (W) 530mm x (H) 669mm x (D) 640mm (W) 20.9ins x (H) 26.3ins x (D) 25.2ins WEIGHT: 42kg (92.6lbs) Echotone Music LLC is an experienced E-commerce Audio Visual Equipment dealer since 1998. We take pride in selling Pro Audio gear for musicians, sound engineers, production companies and broadcast applications. Shipping -Pro packed shipped USPS, UPS or Freight Service. Contact us pay for 2 day air upgrade on any unit. We are working hard to get your product ( built if needed), processed shipped. Processing times vary, 2-30 days Returns/Refunds- If there is truly a manufacturing defect a return tag will be provided. Otherwise customer pays for return shipping. Returned items must be sealed/unopened to qualify for a full refund. Refunds are for the Item cost only. Gear returned with out all its original packaging, accessories or shows signs of wear, is subject to an additional service fee. This item is now used and it would be unfair to resell to another customer as new. What products can not be returned? - Clearance items, Custom Builds, Road Cases, DT12 items, items identified as non-returnable, discontinued items, used or NOS items, electronic software downloads, demo gear, computers, vacuum tubes, earbuds, harmonicas raw-frame speakers, turntable cartridges, fog fluid