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Blackline3 SeriesLive Sound

Only available in China

Blackline3 B18

Compact Subwoofer

Blackline B18 Subwoofer
Where to Buy or Rent

The B18 is a compact, high performance subwoofer for use with the FX12 or FX15. It extends the low frequency operating range of the combined system to 40Hz and provides exceptional low frequency impact. It features a long-excursion 18” (460mm)/4” (100 mm) voice coil driver with a water-resistant cone and triple roll surround in a compact reflex enclosure.


  • Compact, direct-radiator subwoofer
  • Long-excursion 18” (460mm) driver with 4” (100mm) voice coil
  • Water resistant cone
  • Birch-ply enclosure construction
  • Large ports for reduced air noise
  • Perforated steel grille


  • Small-medium live music clubs
  • Music bars
  • Nightclubs
  • Premium KTV

The design of the 18” driver maximises output while minimising power compression and distortion, and the four reflex ports have a large frontal area to reduce turbulent air noise at very high levels.

The B18 enclosure is constructed from multi-laminate birch ply and finished in textured black paint. A perforated steel grille protects the driver and is pre-curved to withstand physical damage.

When used with a Blackline 3 FX12 or FX15 coaxial system, crossover and EQ functions can be performed by the Martin Audio DX1.5 and DX2 system controllers, or by an MA Series amplifier with onboard DSP option.

Blackline3 Brochure [Eng] Blackline3 Brochure [Chinese] Datasheet
TYPE Compact, direct radiating subwoofer
-10dB @ 35Hz
DRIVER18” (460mm)/4” (100mm) voice coil, long excursion, ferrite magnet, waterproof cone
RATED POWER (2) 1000W AES, 4000W peak
MAXIMUM SPL (9) 132dB continuous, 138dB peak (half space)
DISPERSION (-6dB) (5) Omnidirectional
CROSSOVER 80-120Hz active
ENCLOSURE 160 litre, birch ply
FINISH Black paint
PROTECTIVE GRILLE Black perforated steel
CONNECTORS 2 x Neutrik® NL4
  • Input: 1+, 1-
  • Link through: 2+,2-
  • (W) 530mm x (H) 662mm x (D) 640mm
  • (W) 20.9ins x (H) 26.1ins x (D) 25.2ins
WEIGHT 42kg (93lbs)
Martin Audio B18 Tech Drawing

Technical Drawings for Blackline3 B18.

All information is Copyright. Martin Audio Ltd.


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Available in this Series

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Copyright Martin Audio Ltd.
Subject to change without notice.
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