Martin Audio Blackline X115 (X115B) Compact Subwoofer

Compact, Direct-radiator Subwoofer - 1 x 15” (380mm) 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 X115 (MAU-X115B)
  • Screw-free Perforated Steel Grille
  • 5-year Limited Warranty

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Signature Sound for Portable and Installation

The Martin Audio Blackline X115 is a compact direct-radiator subwoofer designed to augment the low frequency performance of BlacklineX Series full-range systems. The enclosure of the X115 is constructed of durable plywood and finished with textured paint coating. This bass reflex enclosure of this loudspeaker with a long excursion 15" (380mm)/3" (75mm) voice coil driver can be used singly, stacked, or flown with integrated M10 inserts. Four large ports in the Martin Audio Blackline X115 contribute to a reduction in air noise at high output levels. The X115 has rubber feet to resist movement and align with top recesses to permit stable stacking.


  • Compact, direct-radiator subwoofer
  • 1 x 15” (380mm) driver with 3” (75mm) voice coil
  • Large ports for reduced air noise
  • Screw-free perforated steel grille
  • 35mm pole-mount socket

Specifications for the Martin Audio Blackline X115

{ "TYPE" : "Compact, direct radiating subwoofer", "FREQUENCY RESPONSE (Measured on-axis in open (4pi) space at 2 metres, then referred to 1 metre.)" : "45Hz-150Hz ± 3dB, -10dB @ 40Hz", "DRIVER" : "15” (380mm)/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.)" : "102dB", "MAXIMUM SPL (Calculated at 1 metre.)" : "129dB continuous, 135dB 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) 465mm x (H) 590mm x (D) 565mm", "(W) 18.3ins x (H) 23.2ins x (D) 22.2ins" ], "WEIGHT" : "27kg (59.5lbs)" }

Research Materials for Martin Audio's Blackline X115 (MAU-X115B)

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 X115 (MAU-X115B) Brochure

Blackline X115 (MAU-X115B) User Guide

Blackline X115 (MAU-X115B) Drawing

Blackline Series Brochure

Blackline Series User Guide

Martin Audio House of Worship Case Studies

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