Sub Martin Audio X215

The Martin Audio X215 Subwoofer is a dual 15-inch subwoofer designed to deliver powerful, deep, and accurate bass for professional audio systems. With its compact design, extremely high output power, and ability to operate reliably in a variety of harsh environments, the X215 is the top choice for high-end stages, auditoriums, theaters, and bars.

Introducing the Martin Audio X215 Subwoofer

Martin Audio X215 is a dual subwoofer line in the professional audio segment of Martin Audio - UK, designed for stage systems, halls, theaters and nightclubs that require strong, deep and powerful bass performance.

Featuring two 15-inch (380mm) drivers, a 4-inch (100mm) voice coil, and a direct-radiating design, this model delivers solid bass, fast response, and wide coverage.

Technical parameters of the product to consider:

• Driver Configuration: Equipped with two 15” (380mm) speakers with 4” (100mm) voice coils – This is a dual long-excursion woofer structure that allows the speaker membrane to oscillate at a large amplitude without distortion. The 4” voice coil helps dissipate heat well, withstands higher power, suitable for continuous use on stage or in bars and clubs.
• Design Type: Direct Radiating Subwoofer, which is a direct-radiating speaker instead of a bandpass or horn, helps improve sound fidelity and linearity, especially in the 50–120Hz range. This design also provides fast transient response – a tight, crisp bass range, without “background rumble”.
• Power Handling: 1500W AES / 3000W Peak, equivalent to a very high actual load capacity. When paired with a corresponding power amplifier, the Martin Audio X215 can achieve a sound pressure level (SPL) of more than 130dB, enough to cover a space of 300–500m².
• Frequency Response: 42Hz – 150Hz (±3dB): allows for clear reproduction of the sub-bass region, ensuring the “hit” force and thickness of the low range. The high crossover frequency of 150Hz makes it easy to coordinate with Martin Audio full-range speakers of the CDD, Blackline or TORUS series.
• Sensitivity: 100dB (1W/1m) – meaning that with just 1W of power, the speaker produces 100dB SPL, demonstrating very high energy conversion efficiency. This number allows the X215 to reach high volume without needing a very “powerful” amplifier.
• Cabinet Design: Multi-layer birch plywood cabinet, solidly reinforced, anti-resonance and vibration. Polyurethane paint coating helps prevent scratches, moisture and withstand outdoor stage conditions.
• Large Vent Port: The large port design reduces air turbulence, providing deep bass without wind noise when operating at high SPL levels. This is an important improvement that helps the Martin Audio X215 maintain its clean sound even when playing at full power.
• Flying Inserts: Installation-ready, suitable for halls, theaters, churches, and commercial spaces.
• Size & weight: Size 550 × 1075 × 700 mm, weight about 65kg. Optimized for both fixed and portable setup, convenient for technicians when transporting, setting up, stacking or assembling sub clusters.

Outstanding features of Martin Audio X215 Subwoofer

The Martin Audio X215 is a dual 15-inch subwoofer developed with the “Power with Precision” design philosophy. This model delivers powerful, clean bass and extremely fast response, creating a solid sound foundation for any professional PA system, stage or hall.

Below are the outstanding features that make the Martin Audio X215 Sub popular in high-end sound systems:

• Deep, powerful and well-controlled bass: Thanks to the structure of 2 15” (380mm) speakers combined with 4” voice coil, X215 can reproduce the frequency range from 42Hz – 150Hz smoothly, creating deep, compact and extremely accurate bass. This is especially important for electronic music genres, live bands, or EDM that require strong impact but still clear every detail.
• Direct-radiating design for high fidelity: Direct Radiating system prevents the signal from being compressed or distorted like horn or bandpass lines. The result is a linear, responsive sound that retains the naturalness of the bass range, suitable for both live performances and background music.
• Multi-layer plywood crate – superior durability: Using high-quality birch plywood, processed with precise CNC technology, the Martin Audio X215 cabinet is vibration-resistant, reduces resonance and increases mechanical durability. The Polyurethane coating protects the speaker from scratches and mold, helping it operate stably in harsh conditions such as outdoor stages or mobile tours.
• Large vent reduces wind noise and distortion: The Large Vent Port structure is fine-tuned by Martin Audio using Acoustic Simulation software. Thanks to that, the amount of air moving through the port is optimized, reducing air turbulence and helping the bass to be clean, deep, and not "rumbling" when opened at high power.
• High SPL Output: With a maximum SPL of over 130dB, the Martin Audio X215 can fill spaces up to hundreds of square meters while still ensuring <1% distortion. This is the perfect choice for medium to large venues, such as bars, clubs, event stages, theaters, and conference centers.
• Easy to combine and expand the system: The X215 is perfectly compatible with Martin Audio Blackline, CDD, TORUS or WPM full-range loudspeakers, and can be easily stacked or fly-mounted. When combined with the Martin Audio iKON Series amplifier or DSP Controller DX4.0, the entire system achieves optimal phase coherence and performance.
• User-friendly design for installation and movement: Weighing in at ~65kg and with an integrated metal handle, the Martin Audio X215 is ideal for mobile setups, touring, or permanent installations. Technicians can stack subs in clusters or place them in line arrays to extend the bass range while maintaining phase coherence.

Detailed review of Martin Audio X215 Karaoke Sub

Bass Quality – Absolute Control

The most impressive feature of the Martin Audio X215 is its ability to reproduce deep bass down to 42Hz - a rare number in the dual karaoke sub segment. With two 15-inch (380mm) speakers and a 4-inch (100mm) voice coil, the X215 allows the speaker membrane to oscillate with a large amplitude, handling extremely strong air volume while maintaining accuracy and stability.

The Direct Radiating structure prevents the bass from being out of phase, limits the resonance phenomenon, and creates a "solid - deep - compact" bass range. When tested at a maximum SPL of over 130dB, the Martin Audio X215 still maintains a harmonic distortion lower than 1%, proving its ability to maintain sound quality at high power without breaking the sound.

In the karaoke space, the kick drum sound is reproduced neatly, the bass guitar sound is clear and the vocals are thicker thanks to the "tight" and evenly distributed bass background. Those who have listened to the X215 all agree: its bass is not only heard by the ears, but also felt by the body.

Speaker cabinet design – The standard of durability and sound quality

Martin Audio has always been famous for its ability to design touring-grade speaker cabinets, and the X215 is the clearest proof. The speaker cabinet is made from multi-layer birch plywood, precision CNC machined, helping to eliminate internal resonance and vibration. The shell is coated with scratch-resistant Polyurethane paint for extreme durability, protecting the speaker from environmental impacts, mold, dust and collision during transportation.

The Large Vent Port is optimized by FEA (Finite Element Analysis) simulation, ensuring stable air circulation, reducing "wind" noise when opening at high power. The internal aerodynamic structure helps the sound to be clean, clear, without background noise or phase distortion - an extremely important factor when setting up karaoke or a closed stage.

Every detail in the design – from the metal handles, anti-vibration rubber feet, to the flying inserts – shows the thinking of one of the world's leading professional audio manufacturers.

Performance – Powerful, stable and energy efficient

With 1500W AES power, 3000W Peak, the Martin Audio X215 easily reaches SPL over 130dB while still ensuring acoustic linearity (linear response). Sensitivity of 100dB (1W/1m) allows the X215 to produce high volume with only moderate power source - an advantage when combined with the iKON iK42/iK81 amplifier or other dedicated DSP amplifier lines.

Thanks to the fast heat dissipation of the 4” voice coil, the X215 can operate continuously for hours without losing quality. The mechanical and electronic protection system integrated inside the speaker keeps the device safe and stable when operating at high loads.

In fact, when running in a configuration of 2 Martin Audio X215 subs + 2 full-range Martin Audio TORUS T1215, the entire system produces deep, powerful bass with even coverage — perfect for spaces of 300–500m², such as VIP karaoke rooms, bar clubs, or large halls.

Matching Ability – Flexible and Precise Coherence

Martin Audio X215 is designed for maximum compatibility with speakers and amplifiers of the same brand. Thanks to the use of phase alignment and DSP calibration technology integrated in the iKON amplifier, the X215 is always in absolute phase with the full-range speakers, ensuring a seamless bass - mid - treble range, without "lag" or "out of phase".

The NL4 SpeakON connectors allow for quick and secure setup, supporting both parallel and bridge modes, suitable for any configuration.
The speakers can be stacked to increase bass pressure at ground level, or fly mounted thanks to the sturdy insert system.

This makes the Martin Audio X215 Speaker not only suitable for fixed karaoke, but also ideal for touring, mobile stages or professional hall installations.

Real Experience – When Bass Becomes Emotion

When tested at Phuc Truong Audio, Martin Audio X215 clearly shows the "quality" of Martin Audio: deep, powerful, fast and very clean bass. With acoustic music, the contrabass is smooth, full and without background noise; and when playing EDM or Pop Dance, the bass range is decisive, energetic, creating an extremely "pleasant to the ear" feeling.

In a karaoke system, the X215 helps vocals sound thicker and warmer, creating a background for vocals to stand out without overpowering the midrange. When combined with full-range TORUS or Blackline speakers, the stereo image is expanded, creating a seamless listening - singing - feeling experience like being at a real live show.

In particular, Phuc Truong's technician commented: "X215 does not need too much EQ - just cut slightly below 40Hz and boost around 60-80Hz, the bass is tight, clear and extremely powerful".

Applications of Martin Audio X215 Karaoke Sub

The Martin Audio X215 Sub is a 15-inch dual subwoofer designed to meet two factors at the same time: professional stage performance and high-end karaoke space acoustics. Thanks to its powerful, clean, deep and stable bass, the Martin Audio X215 easily adapts to many different sound environments - from VIP karaoke, bar clubs to halls, theaters, outdoor events.

With its extremely high output capability (SPL >130dB) and sensitivity of 100dB, the X215 can cover a space of 300 – 500m² while maintaining clear and balanced bass detail, making it a versatile solution for any professional PA system. Typical applications of the Martin Audio X215:

• High-end karaoke system (KTV – Lounge).
• Bar, club and entertainment lounge.
• Hall, theater, performance center.
• Touring stage & outdoor events.
• Religious space - church.
• Commercial fixed installation sound system.

Where to buy genuine, reliable Martin Audio X215 Subwoofer?

Phuc Truong Audio is the official distributor and installer of Martin Audio in Vietnam, specializing in providing high-end stage, karaoke, hall and bar club audio equipment. With over 10 years of experience in the professional audio industry, Phuc Truong Audio has become a trusted address for thousands of customers nationwide when choosing genuine products such as Martin Audio X215 Subwoofer.

At Phuc Truong Audio, customers can experience real sound right at the professional showroom, and receive detailed advice from our team of technicians on configuration, capacity, space and purpose of use to achieve the best sound effect.

Reasons to buy Martin Audio X215 Subwoofer at Phuc Truong Audio:

• 100% genuine goods, imported directly from Martin Audio - UK, with full CO, CQ and manufacturer's standard warranty stamp.
• Expert consultation & coordination: A team of sound engineers with many years of experience in practical setup at karaoke, bar clubs, halls, and outdoor stages.
• Considerate after-sales service: Genuine warranty, lifetime technical support, on-site sound maintenance and calibration.
• Attractive incentive policy: Free installation and delivery within the city. Support 0% installment payment, or exchange old for new for customers upgrading the system. Special discount when buying combo with full-range speakers Martin Audio TORUS, Blackline, CDD or iKON Series amplifier.
• Professional and dedicated technical team: Support testing, measuring response, adjusting EQ, delay and phase in real space to ensure standard sound.

Frequently Asked Questions about Martin Audio X215 Subwoofer

1. What is the actual power of the Martin Audio X215 Subwoofer?

Martin Audio Speakers The X215 is equipped with two 15-inch (380mm) speakers with a 4-inch (100mm) voice coil, delivering 1500W AES and 3000W Peak. With a sensitivity of 100dB (1W/1m) and a maximum SPL of more than 130dB, the X215 can cover a space of 300-500m² with powerful, deep bass and clean sound. This is the ideal professional dual subwoofer line for stage sound system, bar room, hall sound and theater.

2. Can the Martin Audio X215 Subwoofer be used for home karaoke?

Absolutely possible, however the X215 is best suited for large karaoke rooms or VIP rooms. Thanks to the 42Hz – 150Hz frequency range, the speaker provides thick, deep and solid bass, making the vocals warmer, thicker and more emotional. If used for family karaoke system small, you just need to reduce the gain and adjust the EQ to avoid too much sound pressure.

3. What devices should Martin Audio X215 be paired with for best results?

To maximize performance, you should combine the Martin Audio X215 Sub with devices in the same ecosystem such as the Martin Audio iKON iK42 or iK81 amplifier, digital reverb or DSP Controller Martin DX4.0, DX0.5, or high-end digital reverbs such as Eudac KM-600 / KTREASURE D9. When combined with other lines TORUS T1215 full-range speaker, Blackline X12 or CDD Series, the system achieves perfect phase coherence, delivering seamless sound imaging and seamless bass.

4. Is the Sub X215 suitable for permanent installation?

Yes, because Martin Subwoofer The X215 is designed for both permanent installation and portable setups. The birch plywood enclosure is coated with polyurethane paint to protect against moisture and scratches, while the flying inserts support easy mounting in halls, theaters, bars or churches. In addition, the large air port structure helps reduce air turbulence, ensuring stable bass when operating continuously.