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Blackline H3

+

Three-way bi-amp trapezoid Hybrid™ 
fully horn loaded

features

All-horn three-way system

‘Phase-ball’ loaded mid-driver

Hybrid™ LF section

Fitted with handles and castors

Five year limited warranty

applications

Larger club performance

Large scale installs

Century Point, Halifax Road, Cressex Business Park,
High Wycombe, Buckinghamshire HP12 3SL, England.   
Telephone: +44 (0)1494 535312   Facsimile: +44 (0)1494 438669
E-mail: [email protected]
All information is Copyright © 2007 Martin Audio Ltd.

The Blackline H3+ 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.

The mid-horn of the H3+ has a unique ‘phase-ball’ loading device
which maintains the constant directivity characteristics of the horn
at the upper end of its range. It is driven by a new 10” (250mm)
midrange driver with an aluminium demodulating ring for
improved high-mid clarity and reduced distortion when driven
hard. The 70˚ x 40˚ HF section of the H3+ features a
neodymium 1” (25mm) exit compression driver with a Kapton
diaphragm for high sensitivity and extended HF performance. The
internal mid/high passive crossover allows this three-way system
to be driven in a bi-amp configuration.

A Martin Audio M3+ or DX1 Electronic Controller is available to
provide H3+ crossover and limiter facilities.

www.martin-audio.com

overall dimensions

technical specifications

TYPE

Three-way bi-amp trapezoid Hybrid™ fully horn loaded

FREQUENCY RESPONSE (5) 50Hz-18kHz ± 3dB
DRIVERS

15” (380mm)/4” (100mm) voice coil bass driver
10” (250mm)/2.5” (63.5mm) voice coil mid driver
1” (25mm) exit HF compression driver

RATED POWER (2)

LF: 750W AES, 3000W peak
MF + HF: 300W AES, 1200W peak

RECOMMENDED AMPLIFIER LF: 400-1500W into 4 ohms

MF + HF: 400-800W into 4 ohms

SENSITIVITY (6)

LF: 104dB, MF + HF: 104dB

MAXIMUM SPL (7)

131dB continuous, 137dB peak

NOMINAL IMPEDANCE

LF: 8 ohms, MF + HF: 8 ohms

DISPERSION (-6dB)

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 (inc wheels)

(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)

professional

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