Martin Audio W8LMDI

Install Line Array Systems

Martin Audio Install line array systems combine innovative horn-loading techniques with line array technology to produce extremely powerful systems with maximum dynamic impact.

By combining proven and patentable driver-loading techniques with no-compromise vertically-coupled waveguides and true constant directivity horns, the Martin Audio line arrays achieve levels of efficiency and coverage consistency not usually found in this popular format.

All Martin Audio line array systems employ dedicated, horn-loaded cone-driven mid-range sections for highly intelligible voice projection. Toroidal phase plugs optimise the acoustically correct horn designs to provide the precise pattern control and very low distortion that is simply unobtainable from traditional compression driver designs.

This series, offering the same performance as the touring line array systems, has been designed with custom flyware tailored to the needs of fixed installations. Hinging at the front rather than the rear, the rigging system minimises gaps between the acoustic elements which would otherwise interfere with the continuous column effect. The inter-cabinet splay angles are easily selected by sliding links at the rear of the enclosure.

Martin Audio line arrays – in a class of their own.


Martin Audio W8LMDI

* 3-way bi-amp 2x8" downfill for above W8LM

* Three-way, mini vertically arrayable enclosure

The W8LMDI is a mini, very wide-dispersion vertically arrayable enclosure. It can be used individually and in small quantities for short to medium throw applications (up to 30 metres) as well as a downfill element for W8LMI systems.

Constant directivity horns are used for high and mid frequencies, ensuring consistent on and off axis performance. The high frequency horn generates the correct Wavefront curvature to provide optimum inter-cabinet summation and to seamlessly integrate with W8LMI arrays. Our revolutionary HiBlade™ device, patent pending, projects the ultra-high frequencies right out to the extremes of the 120° horizontal dispersion pattern. Conventional constant directivity horns are unable to match this performance without making significant compromises to other aspects of the design.


Stand alone vertically arrayable enclosure

Line array downfill element

Consistent 120° (-6dB) horizontal mid and HF pattern control

20° (-6dB) Vertical dispersion

Tripod mountable singularly or in pairs

Amplitude shading switch

Passive or Bi-Amp format

Compatible with WMX, WLX, WSX, WS2A & WS218X


Short to medium throw arrays of 1 to 4 cabinets

Vertically arrayed downfill for W8LMI systems

Theatre sound reinforcement

Fixed installations


Technical Specification

TYPE Three-way, mini vertically arrayable enclosure


DRIVERS: LF + MF Section 8” (200mm)/2” (50mm) voice coil, reflex-loaded direct radiator

8” (200mm)/2” (50mm) voice coil, neodymium driver, front horn loaded, rear reflex loaded

DRIVERS: HF Section 2 x 1” (25mm) exit HF compression drivers, horn loaded

RATED POWER (2) LF + MF: 400W AES, 1600W peak

HF: 75W AES, 300W peak

FR: 400W AES, 1600W peak


HF: 104dB

FR: 98dB rising to 103dB at HF


(calculated @ 1m) LF + MF: 124dB continuous, 130dB peak

HF: 123dB continuous, 129dB peak

FR: 123dB continuous, 129dB peak


HF: 12 ohms

FR: 12 ohms

DISPERSION (-6dB) 120º horizontal (down to 750Hz),

140º horizontal (down to 650Hz) @ -10dB

20º vertical

CROSSOVER 300Hz passive, 2.2kHz active or passive Shading control switch – rear mounted

ENCLOSURE Vertical trapezoid with 10º wall angle, multi- laminate birch ply construction

FINISH Textured paint

PROTECTIVE GRILLE Perforated steel

CONNECTORS 2 x Neutrik NL4

FITTINGS Proprietary rigging system

4 x M8 inserts for externally mounted top hat fitting

DIMENSIONS (W) 620mm x (H) 284mm x (D) 400mm

(W) 24.4ins x (H) 11.2ins x (D) 15.75ins


(inc rigging hardware) 30kg (66lbs)