• Martin Audio Blackline+ H3T+

Martin Audio Blackline+ H3T+



(£1,870.83 +VAT)

The Blackline H3T+ is a very high performance, all-horn, three-way system in a single, wide-bandwidth package. New drivers have been developed for improved performance in all bands. The Hybrid™ low frequency section comprises a horn-loaded 15” (380mm)/4” (100mm) voice coil driver that is reflex loaded to extend the LF output to below the natural cut-off point of the horn. The new LF driver features a water resistant cone and triple roll surround for increased excursion.

Product Features

  • All-horn three-way system
  • ‘Phase-ball’ loaded mid-driver
  • Hybrid™ LF section
  • Fitted with handles and castors
  • Five year limited warranty

Product Specifications

  • Type: Three-way bi-amp/tri-amp trapezoid Hybrid™ fully horn loaded
  • Frequency response: 50Hz-18kHz ± 3dB
  • Driver: 15” (380mm)/4” (100mm) coil bass driver
  • Driver: 10” (250mm)/2.5” (63.5mm) coil mid driver
  • Driver: 1” (25mm) exit HF compression driver
  • Rated power: LF: 750W AES, 3000W peak, MF + HF: 300W AES, 1200W peak
  • Recommended amplifier: 200W-600W into 4 ohms
  • Sensitivity: LF: 104dB, MF + HF: 104dB
  • Maximum SPL: 131dB continuous, 137dB peak
  • Nominal impedance: LF: 8 ohms, MF + HF: 8 ohms
  • Dispersion: 70˚ horizontal, 40˚ vertical
  • Crossover: 200Hz active, 2kHz passive
  • Enclosure: 250 litre, multi-laminate birch ply
  • Finish: Textured black paint
  • Protective grille: Black perforated steel
  • Connectors: 2 x Neutrik NL4
  • Pin connections: LF+,- : 1+,1-,  (MF + HF) +,- : 2+,2-
  • Fittings: 12 x M10 inserts, 4 x 4” (100mm) castors, 4 x pocket handles
  • Dimensions: (W) 560mm x (H) 1066mm x (D) 780mm (911mm), (W) 22ins x (H) 42ins x (D) 30.7ins (35.9ins)
  • Weight: 77.5kg (170.5lbs)


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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