Martin Audio Blackline Q15 Speaker

Martin Audio Blackline Q15 is a two-way passive speaker designed for professional stage, hall, and bar club sound systems that require high volume, precise frequency range, and high durability.

With optimal design from Martin Audio (UK) - a famous brand of performance speakers, Q15 brings impressive sound performance,

Introducing the Martin Audio Blackline Q15 Speaker

Martin Audio Blackline Q15 is a 2-way speaker model using a 15-inch LF driver combined with a 1.4-inch HF compression driver for powerful and balanced full-range sound reproduction. This is a passive speaker line suitable for PA systems, club sound, live performance and small array configurations.

Technical parameters of the product to consider:

• Speaker configuration: 2-way passive system including 1 15-inch bass speaker and 1 1.4-inch treble speaker delivers a full range of sound, balanced between bass - mid - treble.
• LF Driver: 15” (380mm) bass driver, 4” (100mm) voice coil, ferrite motor system, reproduces strong bass, good control when operating at high power.
• HF Driver: 1.4” (35mm) compression driver with 3” (75mm) diaphragm, helps the treble to be bright, detailed, and not harsh when reaching the 17kHz range.
• Operating power: 800W AES / 3200W peak, allowing the speaker to withstand high loads and operate stably during large performances.
• Maximum sound pressure level (SPL): 127dB continuous / 133dB peak / 139dB crest factor 4, ensuring powerful yet clear sound.
• Sensitivity: 98 dB @ 1W/1m, helping the speaker reach high intensity even with a medium-power amplifier.
• Frequency response range: 51Hz – 17kHz (±3dB), extended to 41Hz (-10dB), fully reproduces the sound range from deep bass to high treble.
• Crossover: Crossover frequency 1.5kHz, internal passive crossover circuit helps smooth and balanced sound between ranges.
• Dispersion: 70°–90° horizontal × 50° vertical, horn can be rotated to optimize the emission direction depending on the space.
• Nominal impedance: 8 Ohms, compatible with most popular power amplifiers.
• Speaker cabinet: Multi-angled birch plywood coated with black textured paint, both durable and aesthetic.
• Protective grille: Perforated steel grille combined with scrim fabric Dustproof, moistureproof, optimal driver protection.
• Connection ports: 2 × Neutrik NL4 SpeakON (1+/1– in / 1+/1– link), convenient for connecting and expanding the system.
• Mounting options: 18-point M8 inserts + 6-point M8 wall-mount + pole-mount socket, flexible for any sound configuration.
• Overall dimensions: 420 × 695 × 400 mm (W × H × D) - neat, easy to install.
• Weight: 33.8 kg, optimized for moving or hanging arrays.
• Compatible devices: DX0.4, DX0.6, DX4.0, VIA amplifier, iKON amplifier-processor, ensuring system synchronization.
• Included accessories: Genuine User Manual.

Outstanding features of Martin Audio Blackline Q15 full-range speaker

Martin Audio Blackline Q15 is a two-way passive loudspeaker developed by Martin Audio (UK) specifically for professional performance sound systems.

Designed for even coverage, high fidelity sound, and high performance, the Q15 is an ideal choice for stages, auditoriums, bars, lounges, and mobile PA systems. The outstanding features of the Martin Audio Blackline Q15 include:

• Exclusive Differential Dispersion horn technology: The Martin Audio Blackline Q15's horn design allows for variable horizontal coverage from 70° to 90° and vertical coverage of 50°, allowing sound to be evenly distributed from the front to the back of the auditorium. This intelligent acoustic solution reduces hotspots and dead zones, providing a consistent audio experience in every position.
• Powerful, responsive bass thanks to 15” ferrite driver with 4” voice coil: Bass speakers with ferrite motors provide high heat resistance, good linear control, and reproduce deep, stable bass when operating at high power — especially useful for stage sound and live performances.
• Clear, natural treble thanks to 1.4” compression driver with 3” diaphragm: The treble is manufactured according to compression driver standards with a 3” diaphragm, allowing for detailed reproduction of high-frequency sound without harshness, suitable for acoustic instruments, vocals and electronic music.
• Multi-angle enclosure design: The speaker body is made of multi-layer birch plywood, covered with scratch-resistant textured black paint, which not only increases aesthetics but also allows the speaker to be installed at many different angles such as hanging vertically, lying down or standing, meeting a variety of performance spaces.
• Flexible installation capabilities: With 18 M8 mounting points, 6 wall mounting points, and a pole mount, the Q15 can be array-mounted, wall-mounted, or placed on a tripod. This makes it easy for technicians to configure the sound system to suit every space, from small rooms to large halls.
• Perfectly compatible with Martin Audio iKON & VIA amplifiers: When combined with the VIA5002 or iKON iK42 amplifier, the Martin Audio Blackline Q15 is automatically DSP optimized (EQ, limiter, delay) via the DX0.6 or DX4.0 processor, providing stable performance and the highest sound quality.
• Outstanding durability and high stability: The Q15 is manufactured according to Martin Audio UK Quality Control standards, capable of continuous operation in harsh environments, with perforated grille + moisture-proof scrim fabric, helping the speaker operate durably in outdoor conditions.
• True sound, even coverage, no distortion: Thanks to a sensitivity of 98 dB and a maximum SPL of 133 dB, the Martin Audio Blackline Q15 ensures clear, detailed sound across all frequency ranges, even at high power levels — a feat that is difficult to achieve in speakers in the same segment.

Detailed review of Martin Audio Blackline Q15 Full Speaker

Impressive audio performance and frequency range

The Martin Audio Blackline Q15 delivers powerful audio performance that is unmatched in the 15-inch full-range speaker segment. A frequency response of 55Hz – 18kHz (±3dB) allows the speaker to fully reproduce both bass and treble ranges with natural balance.

The 15-inch bass driver with 3-inch (75mm) voice coil increases power handling and oscillation control, reproducing deep, solid, and unobtrusive bass. Meanwhile, the 1-inch HF compression driver handles the delicate high range with low total distortion (THD < 0.5%).

Maximum SPL reaches 130dB, allowing the Martin Audio Blackline Q15 to cover stages or spaces over 150m² while maintaining impressive detail and dynamic range.

High-fidelity, detailed sound quality

The sound quality of the Martin Audio Blackline Q15 is characterized by the “British Sound” – balanced, clear and deep. The midrange is accurately reproduced, clearly expressing the nuances of vocals and acoustic instruments such as guitar, violin or piano.

The high range thanks to the PETP diaphragm of the compression driver produces a bright, smooth, and non-harsh sound even when operating at high SPL. When listening at high volume levels, the speaker still maintains a good signal-to-noise ratio and does not exhibit nonlinear distortion.

With a flat frequency response, the Martin Audio Blackline Q15 speaker delivers the authentic feeling of listening to live sound on stage.

Exclusive Differential Dispersion horn technology

A highlight of the Martin Audio Blackline Q15 is the Differential Dispersion Horn technology – a Martin Audio specialty. The horn has a sound coverage angle of 80°–100° horizontal × 50° vertical, creating a uniform acoustic field both near and far from the speaker.

This design allows listeners in all positions to receive the same volume and quality, minimizing “dead spots”. The horn can also be rotated to customize the sound coverage direction according to vertical or horizontal mounting configuration, very convenient in PA systems, stage monitors or fixed installations. This is the technology that helps Martin Audio Blackline Q15 excel in dispersion control compared to speakers of the same capacity.

Speaker cabinet design and high mechanical strength

The Martin Audio Q15 speaker cabinet is made of 18mm thick birch plywood, a high-density material that reduces internal resonance and enhances strength. The polyurethane textured black paint coating not only creates a professional aesthetic but is also scratch-resistant and moisture-resistant - suitable for hot and humid climates like Vietnam.

The perforated steel grille and scrim fabric protect the driver from dust and moisture without affecting the frequency response. The multi-angle cabinet allows for flexible vertical, horizontal, or hanging arrangements, and supports M8 accessories, pole mounts, and eyebolt suspension. The total weight is approximately 25 kg, making it sturdy enough but still easy for the technical team to handle during mobile installations.

Optimal mixing and control

Martin Audio Blackline Q15 has a nominal impedance of 8Ω and a sensitivity of about 98dB, making it easy to pair with 400-800W/channel power amplifiers. When combined with Martin Audio iKON, VIA amplifiers or DX4.0 processors, the system achieves accurate phase-frequency alignment, reduces latency and increases linearity across the entire range.

The DX processor provides genuine EQ presets and limiters, ensuring driver safety and sound reproduction in the spirit of “Martin Audio voicing”. Connected by Neutrik NL4 speakON, an international industry standard, for stable signal transmission even when operating at high power for long periods of time.

Applications of Martin Audio Blackline Q15 Full Range Speakers

Martin Audio Blackline Q15 is a 2-way full-range speaker line dedicated to stage sound systems, auditoriums and high-end entertainment spaces.

With its powerful output (400W AES / 1600W peak), high sensitivity of 98dB, and wide coverage of 80°–100° × 50°, the Q15 delivers powerful, consistent, and faithful audio performance — suitable for both fixed and portable systems. Here are some typical real-world applications of the Q15:

• Stage and hall sound system.
• Bar, lounge, beer club and high-end entertainment space.
• High-end karaoke system - professional singing room.
• Conference, event and shopping center systems.
• Mobile and outdoor performance systems.
• Stage monitor system.

Where to buy Martin Audio Blackline Q15 Speakers at good price and reliable?

Phuc Truong Audio is the official distributor of Martin Audio in Vietnam, specializing in providing high-end full-range speakers, subwoofers, amplifiers and processors for professional sound systems.

With over 10 years of experience in the sound and lighting industry, Phuc Truong Audio has affirmed its position as a leading reliable supplier of audio equipment for thousands of karaoke, hall, stage, bar club, and coffee lounge projects nationwide.

Why should you buy Martin Audio Blackline Q15 at Phuc Truong Audio?

• Genuine products – clear origin: All Martin Audio equipment is imported officially, with full CO - CQ, warranty stamp and authentic serial code.
• Competitive price – full technical support: Phuc Truong Audio always has the best price policy in the market, with a team of experienced technicians to support installation, calibration, and sound testing on-site.
• Real experience at showroom: Customers can directly listen to Martin Audio Blackline Q15, Q8, SX Series and many other speaker lines to choose the most suitable configuration.
• Dedicated after-sales service and warranty: Products are warranted for 12-24 months, support for quick exchange or repair, committed to service "good sound - durable use - dedicated support".
• Nationwide delivery - flexible payment: Support home delivery, on-site testing, payment by bank transfer, credit card, or 0% installment depending on needs.

Frequently Asked Questions about Martin Audio Blackline Q15 Full Range Speakers

1. What is the Martin Audio Blackline Q15 full-range speaker?

Martin Audio Speakers Blackline Q15 is a two-way full-range speaker (2-Way Passive Loudspeaker) of the famous Blackline Series of Martin Audio UK. The product uses a 15-inch bass combined with a 1-inch compression driver, capable of reproducing the entire frequency range from 55Hz - 18kHz with powerful, realistic and evenly distributed sound. Thanks to the birch plywood shell design and Differential Dispersion Horn technology, Q15 is suitable for stages, halls, bars, lounges and high-end karaoke.

2. How is the Q15 speaker different from the Q8 or Q12 in the same Blackline series?

Compare to Martin Audio Q8 (8 inch) and Q12 (12 inch), Q15 is larger in size, more powerful (400W AES / 1600W peak) and higher sensitivity. If Q8 is suitable for small rooms, Q12 for karaoke systems or mid-range spaces, Martin Audio Blackline Q15 is aimed at stages, halls and bars - where high volume, deep bass and wide coverage are required. All three models share Martin Audio's "Compact Yet Powerful" design philosophy, for a consistent sound experience.

3. Does the Martin Audio Q15 speaker need a subwoofer?

Although the Martin Audio Blackline Q15 can play the full range of sound from 55Hz, for deeper and more powerful bass, it is recommended to combine more Martin Audio SX118 subwoofer, SX218 or PI118.
When combined, the system extends the frequency range down to around 35–40Hz, creating a tighter, fuller, and smoother bass — perfect for high-end karaoke, DJs, or stage performances.

4. Can the Q15 speaker be used as a stage monitor?

Absolutely. Thanks to its multi-angle cabinet design and 90° rotatable Differential Dispersion horn, the Martin Audio Blackline Q15 can be tilted as monitor speaker Wedge for singers or instrumentalists. Clear midrange, accurate highs, and low feedback make the Q15 an ideal choice for live acoustic stages, bands, or outdoor events.