• Martin Audio Blackline+ S15+

Martin Audio Blackline+ S15+



(£801 +VAT)

The compact Blackline S15+ sub-bass system has been designed to be used with Blackline F12+ or F15+ full-range systems to extend and increase the total low frequency output power. The S15+ provides good bass punch from a new, long-excursion, 15” (380mm)/4” (100mm) voice coil driver with a water resistant cone and triple roll surround.

Product Features

  • Compact vented sub-bass
  • Direct radiating 15” (380mm) driver
  • High temperature 4” (100mm) voice coil
  • Top hat fitting for pole mounting F12+/F15+
  • Five year limited warranty

Product Specifications

  • Type: Compact, vented sub-bass system
  • Frequency response: 45Hz-120Hz ± 3dB, -10dB @ 40Hz
  • Drivers: 15” (380mm)/4” (100mm) voice coil LF driver
  • Rated power: 750W AES, 3000W peak
  • Recommended amplifier: 600W-1500W into 4 ohms
  • Sensitivity: 101dB (half space)
  • Maximum SPL: 129.5dB continuous, 135.5dB peak (half space)
  • Nominal impedance: 8 ohms
  • Crossover: 120Hz active/passive low pass filter
  • Enclosure: 100 litre, multi-laminate birch ply
  • Finish: Textured black paint
  • Protective grille: Black perforated steel
  • Connectors: 2 x Neutrik NL4
  • Pin connections: LF+,- : 1+,1- and 2+,2-
  • Fittings: 1 x mounting pole socket, 2 x pocket handles
  • Dimensions: (W) 470mm x (H) 690mm x (D) 496mm, (W) 18.5ins x (H) 27.2ins x (D) 19.5ins
  • Weight: 38.5kg (84.5lbs)


We offer next day delivery as standard on all items subject to stock availability

Many of the products on offer are in stock and available for next day delivery. Some of our specialist product lines are shipped directly from the manufacturer and in this situation we can not guarantee next day delivery. These products are manufactured in batches and if ordered at the right time, you will receive next day delivery but may be up to six weeks if ordering at the beginning of a batch. These products are available to order and you will be advised of a delivery date. Please call us for more information or to check stock availability. +44(0)1908 615 365


Returns policy

In accordance with The Customer Protection (Distance Selling) Regulations 2000 (updated June 2014), Audishop.London provides customers with the right to cancel an order within 14 days of the date of delivery. You must notify Audioshop.London of your intention to do so in writing within this period. Email notification can be sent to returns@audioshop.london Goods must be returned at your cost and liability, unused and as new, complete with all accessories, cables, manuals and software in undamaged original packaging. Goods must be protected for transit by a double box or cardboard outer. Proof of purchase in the form of the Audioshop.London packing slip or invoice must be provided with the goods. If an entire order is returned we will refund the value of a standard on-line delivery charge.



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