Name: Blackline Q15
Rating: 4.7 (23 reviews)

Blackline Q15 is a significant upgrade over its predecessor, delivering enhanced performance and wider coverage, and features a die-cast aluminium chassis for improved thermal conductivity and more efficient motor cooling.

A passive two-way system, Q15 is designed for professional portable applications and installations that demand the ultimate in sonic performance from a single enclosure.

Features

Passive two-way system
Symmetrical multi-angle plywood enclosure
Peak SPL of 133dB (139dB with crest factor 4)
User-rotatable Differential Dispersion horn
Dispersion: 70°– 90° horizontal × 50° vertical
Vertical and horizontal orientation
Screw-tight, cloth-backed perforated steel grille
Integrated ergonomic handle made from recycled ABS
Pole-mount cover maintains clean lines
8Ω nominal impedance
Two NL4 connectors
Flexible mounting options via M8 inserts

Applications

Portable sound reinforcement
Live music clubs
Bars and restaurants
Nightclubs
Unobtrusive stage monitoring
Corporate AV events and conferences
Weddings and parties
Main PA infill
Secondary stages at festivals
Houses of worship, leisure centres and retail outlets

Capable of delivering a peak SPL of 133dB (139dB with crest factor 4), Blackline Q15 features a powerful 15” (380mm) LF driver with a 4” (102mm) voice coil and a 1.4” (35mm) exit HF compression driver with a 3” (75mm) dome. Its Differential Dispersion horn ensures wide and consistent coverage and can be easily rotated for horizontal or vertical orientation, depending on deployment requirements.

Q15 is built from robust plywood and finished in durable black paint. It has a screw-tight steel grille, M8 inserts for wall bracket, yoke or eyebolt suspension, and a pole-mount socket with a removable cover to maintain clean lines for installation applications.

This full-range, passive two-way system is recommended to be used with a processor and amplifier, or a combined amplifier-processor unit, such as a DX processor and VIA amplifier, or an iKON combined amplifier and processor.

Links

User guide Datasheet BlacklineQ Brochure

Specification

Type	Passive two-way loudspeaker
Frequency response [1]	51 Hz – 17 kHz ± 3 dB, –10 db @ 41 Hz
Driver (LF)	15” (380 mm) with 4” (100 mm) voice coil, ferrite motor system
Driver (HF)	1.4" (35 mm) exit compression driver with 3" (75 mm) voice coil
Rated power [2]	800 W AES, 3200 W peak
Required electronics	Processor and amplifier, or a combined amplifier-processor unit
Recommended electronics	DX0.4, DX0.6 or DX4.0 system processor and VIA amplifier, or iKON amplifier-processor
Sensitivity [3]	98 dB
MAXIMUM SPL	127 dB continuous, 133 dB peak, 139 dB peak with crest factor 4
Nominal impedance	8 ohm
Dispersion [4]	Dispersion: 70°–90° (horizontal) × 50° (vertical)
	User-rotatable Differential Dispersion horn
Crossover	1.5 kHz passive
Enclosure	Symmetrical multi-angle plywood
Finish	Black textured paint
Protective grille	Black perforated steel grille with scrim cloth backing
Connectors	2 x NL4 connectors
Pin connections (input)	1+/1–
Pin connections (link)	1+/1– to 1+/1–
Fittings	18 x M8 inserts, 6 x M8 inserts for wall bracket
	2 x pocket handles made from recycled ABS
	Pole-mount socket with removable cover
Dimensions	(W) 420 mm x (H) 695 mm x (D) 400 mm
	(W) 16.5 in x (H) 27.4 in x (D) 15.8 in
Weight	33.8 kg (74.6 lbs)

Architectural Specs

Martin Audio Blackline Q15

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.

Technical Drawings & 3D Models