The loudspeaker shall be a passive, two-way system. Its transducers shall consist of a reflex-loaded 15” (380 mm) low-frequency driver with a 4” (102 mm) voice coil and a 1.4” (35 mm) exit high-frequency compression driver with a 3” (75 mm) dome, mounted on a user-rotatable Differential Dispersion horn to enable vertical or horizontal orientation of the enclosure.
Horizontal dispersion shall taper from 70° to 90° along the vertical axis to optimise near and far field coverage. Vertical dispersion shall be 50° total (+20° / –30°). The on-axis frequency response shall be 51 Hz to 17 kHz (±3 dB), with low-frequency extension down to 41 Hz (–10 dB). The loudspeaker shall produce a peak SPL of 133 dB (139 dB with crest factor 4) at 1 metre. Nominal impedance shall be 8 ohms. The loudspeaker shall require external amplification and processing. For optimal performance, it shall be used in conjunction with a dedicated electronic controller such as a Martin Audio DX series processor, paired with a VIA series amplifier, or with an iKON series combined amplifier and processor.
The rear connector panel shall be fitted with two NL4 connectors. The enclosure shall be constructed from multi-angle plywood and finished in black textured paint. It shall be fitted with a pole-mount socket with a removable cover and M8 threaded inserts to accommodate wall brackets, yokes or eyebolt suspension. The drivers shall be protected by a screw-fixed, perforated steel grille with a cloth backing. An integrated ergonomic handle made from recycled ABS shall be included. The loudspeaker shall also feature a die-cast aluminium chassis for improved thermal conductivity and more efficient motor cooling.
Dimensions (W x H x D) shall be 420 mm x 695 mm x 400 mm (16.5 in x 27.4 in x 15.8 in). Weight shall be 33.8 kg (74.6 lbs).
The loudspeaker shall be the Martin Audio Blackline Q15.