Martin Audio H3 for Sale | 3-Way Fully Horn-Loaded Loudspeaker

The Martin Audio H3 for sale is a professional three-way, bi-amped loudspeaker from Martin Audio’s Blackline range, designed for high-output sound reinforcement in clubs, live venues, touring systems and fixed installations. Its fully horn-loaded Hybrid design combines a 15-inch low-frequency driver, 10-inch mid-frequency driver and 1-inch exit compression driver, delivering high sensitivity and controlled projection from a single enclosure. Martin Audio’s archived specifications rate the original H3 for a 50 Hz–18 kHz ±3 dB frequency response, 70° × 40° dispersion and up to 136 dB peak SPL.

The H3 is now a legacy Martin Audio model, which gives this listing a different buyer profile from current-production loudspeakers. It can be particularly relevant to venues and professional audio companies that already operate Blackline H3 systems and need additional matching cabinets, replacements or components for an established setup. Martin Audio continues to list the H3 in its official archived-products section.

Martin Audio H3 Technical Specifications

The original manufacturer documentation provides the following specifications for the H3.

This combination of high sensitivity, horn loading and controlled dispersion positions the H3 primarily as a serious professional sound-reinforcement cabinet rather than a conventional portable PA speaker.

Fully Horn-Loaded Three-Way Architecture

A major characteristic of the Martin Audio H3 for sale is its three-way Hybrid horn-loaded architecture.

The cabinet divides reproduction between three driver sections. A 15-inch transducer handles low frequencies, while a dedicated 10-inch driver reproduces the midrange. A 1-inch exit compression driver then handles the high-frequency section.

According to Martin Audio’s original documentation, the midrange driver uses the company’s phase-ball loading arrangement, while the HF compression driver operates through a constant-directivity horn.

This dedicated-driver approach allows each section to concentrate on a specific part of the audio spectrum.

15-Inch Low-Frequency Section

The H3 incorporates a 15-inch low-frequency driver using a horn/reflex-loaded arrangement.

Martin Audio rated the original LF section at:

500 W AES
2000 W peak

The manufacturer specified a recommended amplifier range of approximately 400–1000 W into 4 ohms for the LF section.

For larger music systems, dedicated subwoofers can still be added where greater low-frequency extension and output are required.

Dedicated 10-Inch Midrange Driver

Instead of asking the 15-inch driver to reproduce a large portion of the vocal and midrange spectrum, the H3 incorporates a separate 10-inch horn-loaded midrange driver.

This dedicated mid section is an important part of the H3’s architecture.

For applications involving live music, club systems and high-output sound reinforcement, a dedicated midrange section can be particularly valuable because much of the information responsible for vocal presence and musical definition lies within this region.

70° × 40° Controlled Coverage

Martin Audio specifies nominal dispersion of:

70° horizontal × 40° vertical

This relatively controlled coverage is useful when sound needs to be projected toward a defined audience area rather than spread broadly in every direction.

In professional venue design, controlled dispersion can help system engineers reduce unnecessary energy toward walls, ceilings and other reflective surfaces.

However, correct cabinet positioning remains important to achieve appropriate audience coverage.

Up to 136 dB Peak SPL

The original H3 specification lists maximum output at approximately:

130 dB continuous
136 dB peak

These figures reflect the cabinet’s high-output professional design.

Consequently, the H3 is better suited to professional sound-reinforcement applications than casual playback environments.

Bi-Amp Professional Configuration

Another important detail is that the original H3 operates as a bi-amped system.

The crossover between the LF and mid/high sections is handled actively, while the mid and high-frequency sections use an internal passive crossover. Martin Audio’s archived H3 datasheet specifies a 200 Hz active crossover and a 2 kHz passive crossover.

Therefore, buyers should not treat the H3 as a simple full-range passive cabinet that can be connected without considering the required system processing.

Appropriate amplification and processing are essential.

Martin Audio H3 for Club Sound

Club installations are one of the natural applications for the H3.

A professional club system needs strong projection, controlled coverage and sufficient output to operate effectively in demanding environments.

The H3’s combination of:

Horn-loaded LF
Dedicated horn-loaded midrange
Compression-driver HF
70° × 40° coverage

makes it particularly relevant to traditional high-output club and live-music system designs.

Suitable for Live Music Venues

The Martin Audio H3 for sale can also appeal to live venues looking for established professional sound equipment.

Possible applications include:

• Live music venues
• Clubs
• Concert spaces
• Event halls
• Professional PA systems
• Fixed installations
• Rental inventories
• Existing Blackline systems

Its physical size and approximately 77.5 kg weight mean it is a substantial professional cabinet rather than a lightweight portable speaker.

Rugged Birch Plywood Construction

Professional loudspeakers must withstand environments very different from domestic audio equipment.

The H3 enclosure uses multi-laminate birch plywood, finished with textured black paint and protected by a perforated steel grille.

The original cabinet also includes multiple M10 inserts and castors.

These details reflect its intended use in professional deployment rather than home listening.

A Useful Option for Existing H3 Owners

Existing Martin Audio H3 users may represent particularly strong purchase intent for this product.

Because the H3 is now an archived model, owners of established systems may search specifically for matching cabinets.

Additional H3 units could potentially serve as:

• Replacement cabinets
• System expansion inventory
• Backup equipment
• Matching stock for existing installations
• Additional rental inventory

For these buyers, model compatibility may matter more than purchasing a newer but completely different loudspeaker platform.

H3 vs H3+ – Know the Difference

It is important not to confuse the original Martin Audio H3 with the later H3+.

Although the models share a similar overall concept, their published specifications differ.

For example, Martin Audio rated the original H3 LF section at 500 W AES, whereas the later H3+ specification lists 750 W AES and higher maximum SPL.

Therefore, your WooCommerce product title and specifications should clearly identify the cabinet as H3 unless your physical inventory is actually H3+.

Professional Amplification and Processing

Correct system configuration is especially important with legacy professional loudspeakers.

The amplifier, crossover configuration, limiters and system processing should match the H3 requirements rather than using generic settings.

Martin Audio currently maintains archived loudspeaker parameter resources specifically for legacy products.

That official technical information is a better reference for system setup than settings copied from unrelated loudspeakers.

Condition and Available Quantity

You haven’t yet supplied the quantity, price or condition of your available Martin Audio H3 cabinets.

Therefore, I would not claim that they are new, excellent condition, original components or perfectly working until those details are confirmed.

For the product page, you can currently use:

Condition: Contact us / To be confirmed
Quantity: Inquire for current stock
Price: Contact for price

Then replace these once you have the actual inventory information.

Buy Martin Audio H3 for Sale in Europe

Euro Electronic Space offers the Martin Audio H3 for sale for professional audio buyers looking for established Blackline equipment for venues, club systems, rental inventory and existing Martin Audio installations.

With its three-way fully horn-loaded architecture, 15-inch LF section, dedicated 10-inch midrange driver, 70° × 40° dispersion and up to 136 dB peak output, the H3 remains an interesting option for buyers specifically seeking this established Martin Audio platform.

Shipping can be arranged to supported destinations throughout Germany, the Netherlands, France, Italy and other European markets.

Frequently Asked Questions

What type of speaker is the Martin Audio H3?

The H3 is a three-way, bi-amped, fully horn-loaded professional loudspeaker from Martin Audio’s Blackline range.

What drivers are inside the H3?

It uses a 15-inch LF driver, 10-inch midrange driver and 1-inch exit HF compression driver.

What is the frequency response?

Martin Audio specifies approximately 50 Hz–18 kHz ±3 dB.

What is the H3 dispersion?

The nominal coverage is 70° horizontal × 40° vertical.

How loud is the Martin Audio H3?

The original manufacturer specification lists approximately 130 dB continuous and 136 dB peak SPL.

Is the Martin Audio H3 discontinued?

The H3 is currently listed by Martin Audio among its archived legacy products.

Is the H3 the same as the H3+?

No. They are related but different models wBuilt for buyers who still value classic high-output horn-loaded PA design, the Martin Audio H3 for sale is a three-way bi-amped Blackline loudspeaker featuring 15″ LF, 10″ mid and 1″ HF sections. With 70° × 40° controlled coverage, 50 Hz–18 kHz response and up to 136 dB peak SPL, it is well suited to professional clubs, live venues and existing H3 systemsith different published specifications.

Does the H3 require system processing?

Yes. It is a professional bi-amp design, so appropriate amplification, crossover and system settings are important.

How much does the H3 weigh?

The manufacturer’s archived specification lists approximately 77.5 kg per cabinet