Martin Audio Blackline X118 Compact Subwoofer

Compact, Direct-radiator Subwoofer - 1 x 18” (460mm) Driver with 3” (75mm) Voice Coil - Large Ports for Reduced Air Noise

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What's in the box:

  • Martin Audio's Blackline X118 (MAU-X118B)
  • Screw-free Perforated Steel Grille
  • 5-year Limited Warranty

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Signature Sound for Portable and Installation

The Martin Audio Blackline X118 compact direct-radiator subwoofer extends the low-frequency impact of the BlacklineX Series full-range loudspeakers to an operating range of 42Hz. This professional loudspeaker features a long-excursion 18” (460mm)/3” (75 mm) voice coil driver in a compact enclosure that has four reflex ports to reduce turbulent air noise at very high levels. Constructed of durable plywood and finished with a textured paint coating, the X118 is designed with rubber feet, two side handles, top indexing recesses, and integrated M10 insets to be used singly, stacked or flown. These comprehensive design features enable integration of the Martin Audio Blackline X118B to suit various performance needs, and when used with BlacklineX Series full-range systems, crossover and EQ functions can be performed by the DX0.5.


  • Compact, Direct-radiator Subwoofer
  • 1 x 18” (460mm) Driver with 3” (75mm) Voice Coil
  • Large Ports for Reduced Air Noise
  • 8Ω Nominal Impedance
  • Screw-free Perforated Steel Grille

Specifications for the Martin Audio Blackline X118

{ "TYPE" : "Compact, direct radiating subwoofer", "FREQUENCY RESPONSE (Measured on-axis in open (4pi) space at 2 metres, then referred to 1 metre.)" : "42Hz-150Hz ± 3dB, -10dB @ 38Hz", "DRIVER" : "18” (460mm)/3” (75mm) voice coil, long excursion, ferrite magnet", "RATED POWER (AES Standard ANSI S4.26-1984.)" : "500W AES, 2000W peak", "SENSITIVITY (Measured in open (4pi) space at 2 metres with 2.83V input, using band limited pink noise, then referred to 1 metre.)" : "104dB", "MAXIMUM SPL (Calculated at 1 metre.)" : "131dB continuous, 137dB peak (half space)", "NOMINAL IMPEDANCE" : "8Ω", "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" : "33kg (72.7lbs)" }

Research Materials for Martin Audio's Blackline X118 (MAU-X118B)

We've added technical materials to help with your buying decision. Even if you're technically inclined, you may want to consider talking to our sales techs to make sure this item is the right fit for your particular use. 800.562.6006

Blackline X118 (MAU-X118B) Brochure

Blackline X118 (MAU-X118B) User Guide

Blackline X118 (MAU-X118B) Drawing

Blackline Series Brochure

Blackline Series User Guide

Martin Audio House of Worship Case Studies

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