Martin Audio H3+ for Sale | High-Output 3-Way Horn-Loaded Loudspeaker

The Martin Audio H3+ for sale is a high-output three-way professional loudspeaker developed for applications where strong projection, controlled coverage and high sensitivity matter. As part of Martin Audio’s established Blackline heritage, the H3+ combines a 15-inch low-frequency driver, dedicated 10-inch mid-frequency section and 1-inch exit high-frequency compression driver in a horn-loaded system. It is particularly suited to professional clubs, live venues, high-energy music systems and fixed installations.

Unlike compact point-source cabinets designed mainly around portability, the H3+ is a substantial professional enclosure built around output and projection. Therefore, buyers searching specifically for this model are often looking to expand an existing H3+ installation, replace matching cabinets or build a traditional high-output horn-loaded PA system.

Martin Audio H3+ Loudspeaker Overview

The H3+ uses a three-way configuration that separates low, mid and high-frequency reproduction across dedicated driver sections.

This architecture gives the Martin Audio H3+ for sale a very different character from smaller two-way cabinets.

Three-Way Horn-Loaded Performance

The H3+ divides the audio spectrum between three dedicated transducer sections.

Instead of requiring one driver to reproduce an extremely wide frequency range, the system assigns different frequencies to the LF, mid and HF sections.

This configuration is particularly useful in high-output professional sound reinforcement.

The 15-inch driver handles the low-frequency section, while the dedicated 10-inch midrange driver concentrates on frequencies where musical definition and vocal presence are especially important. Finally, the compression-driver section provides high-frequency projection.

As a result, the H3+ is designed around efficiency, clarity and controlled output.

Powerful 15-Inch LF Section

A major improvement associated with the H3+ is its higher-capacity low-frequency section.

The cabinet uses a 15-inch LF driver rated at approximately 750 W AES.

For buyers comparing the H3+ with the original H3, this distinction matters. The original H3 used a lower-rated LF section, while the H3+ increased the low-frequency power handling.

Consequently, your H3+ product page should not simply duplicate the specifications or description from your H3 listing.

Dedicated 10-Inch Midrange Driver

The Martin Audio H3+ for sale also incorporates a dedicated 10-inch midrange transducer.

This is an important part of its three-way architecture.

In live music and club systems, the midrange carries a significant amount of the information responsible for vocals, instruments and overall musical presence.

By assigning this range to a dedicated driver, the H3+ can maintain strong projection while allowing the LF and HF sections to concentrate on their respective frequency ranges.

High-Frequency Compression Driver

High frequencies are handled by a professional compression-driver and horn arrangement.

Horn loading helps concentrate acoustic energy toward the intended listening area.

This approach is particularly useful in venues where a conventional wide-dispersion cabinet might send too much energy toward walls or other reflective surfaces.

For professional installations, controlled projection can contribute to more predictable audience coverage.

70° × 40° Controlled Dispersion

The H3+ provides nominal coverage of approximately:

70° horizontal × 40° vertical

This relatively focused dispersion makes the loudspeaker particularly interesting for venue installations.

Rather than attempting extremely wide coverage from one cabinet, system designers can position H3+ loudspeakers according to the audience geometry.

The result can be more deliberate sound distribution across the listening area.

High SPL for Demanding Venues

The H3+ was developed for professional systems where substantial acoustic output is required.

Maximum output can reach approximately 138 dB peak, depending on system configuration and measurement conditions.

That makes this cabinet relevant to environments such as:

• High-energy clubs
• Live music venues
• Concert halls
• Event spaces
• Entertainment venues
• Professional fixed PA
• Large music systems

However, maximum SPL should never be the only factor when designing a professional sound system. Coverage, processing, room acoustics and correct amplifier matching remain equally important.

Martin Audio H3+ for Club Sound Systems

Club sound is one of the strongest applications for the Martin Audio H3+ for sale.

Horn-loaded systems have long been popular in high-energy music environments because they can provide strong projection and substantial acoustic output.

The H3+ combines this approach with dedicated low, mid and high-frequency sections.

Therefore, it can be particularly relevant to professional installations where the system needs to reproduce music at substantial levels while maintaining definition across the audience area.

Built for Live Music Venues

Live music presents different demands from background or distributed audio.

A professional venue system must reproduce vocals, drums, guitars, electronic instruments and other sources while maintaining sufficient headroom.

The three-way architecture of the H3+ makes it well suited to these demanding applications.

Furthermore, dedicated subwoofers can complement the H3+ where greater low-frequency extension is required.

Martin Audio H3+ for Fixed Installations

The H3+ is particularly well suited to permanent installations where cabinet placement can be optimized for the room.

Possible applications include:

Nightclubs requiring high-output music reproduction.

Live venues that need strong projection and headroom.

Entertainment spaces operating professional sound systems.

Theatres and performance venues requiring controlled audience coverage.

Existing Blackline installations that need additional matching H3+ cabinets.

Because the cabinet is substantial, professional mounting and system planning are important.

Bi-Amp System Configuration

The H3+ is designed around a professional bi-amplified configuration.

This means buyers should not approach it like a basic passive speaker that can simply be connected to any amplifier without considering processing.

Appropriate amplification and loudspeaker management are required.

The system processor should provide the correct crossover, EQ, limiter and other settings needed for the H3+.

Correct configuration is especially important when working with older professional loudspeaker platforms.

Matching Amplification Matters

The amplifier needs to suit the requirements of both the LF and mid/high sections.

Therefore, professional users should consider:

• Amplifier output
• Loudspeaker impedance
• Crossover settings
• Limiter thresholds
• Gain structure
• System processor configuration
• Cable requirements

Using an amplifier simply because it has a high wattage rating is not enough.

The complete system must be configured around the loudspeaker manufacturer’s requirements.

H3+ with Professional Subwoofers

Although the H3+ contains a 15-inch LF section, large club and concert systems may still benefit from dedicated subwoofers.

In such a configuration, the H3+ can concentrate more heavily on the main musical range while appropriately configured subwoofers reproduce the deepest bass.

This approach can be especially useful for electronic music, live concerts and high-output entertainment systems.

The crossover between the H3+ and subwoofer system should be configured through appropriate professional processing.

Rugged Professional Construction

Professional loudspeakers need to survive environments that are far more demanding than home audio systems.

The H3+ uses a substantial plywood enclosure designed for professional operation.

Its construction reflects the needs of venues, touring companies and installation businesses rather than casual portable use.

Consequently, transportation, installation and positioning should be handled appropriately for a professional cabinet of this class.

H3+ vs Original Martin Audio H3

The H3+ and original H3 should have separate product pages because they are not identical models.

One important difference is the LF power handling.

Therefore, customers specifically searching for an H3+ should land on a page dedicated to the correct model rather than an H3 page with the model name changed.

An Important Option for Existing H3+ Owners

Because the H3+ is an established professional platform, existing owners can represent particularly valuable search traffic.

Someone searching specifically for Martin Audio H3+ for sale may already operate this model.

They could be searching for:

• Additional matching cabinets
• Replacement loudspeakers
• Backup inventory
• Expansion of an existing venue system
• Matching units for a rental inventory
• Components for an established Blackline setup

This is why using the exact model name throughout the page is important for transactional SEO.

Legacy Professional Martin Audio Equipment

The H3+ belongs to an earlier generation of Martin Audio professional loudspeaker systems.

That does not automatically make it irrelevant.

In fact, established venues and rental companies may deliberately search for discontinued professional equipment because changing an entire existing system can be far more expensive than sourcing compatible additional units.

Therefore, the product page should target buyers looking specifically for H3+ equipment, rather than presenting the cabinet as though it were a current-generation Martin Audio model.

Condition and Available Quantity

You haven’t provided the condition, available quantity or selling price of these H3+ cabinets.

Therefore, I would not automatically copy claims such as perfectly working, all original components, excellent condition or like new from your other listings.

Until confirmed, use:

Condition: Contact for details
Available Quantity: Contact for current stock
Price: Contact for price

Once you provide those details, they can be incorporated naturally into the product description.

Buy Martin Audio H3+ for Sale in Europe

Euro Electronic Space offers the Martin Audio H3+ for sale in Europe for professional audio companies, clubs, venues, installers and rental businesses looking for established high-output Martin Audio equipment.

Its combination of a 15-inch LF driver, dedicated 10-inch midrange section, compression-driver HF, approximately 70° × 40° coverage and high-output horn-loaded design makes it particularly relevant to professional music systems where projection and controlled coverage are priorities.

Shipping is available to supported destinations throughout Germany, the Netherlands, France, Italy and other European countries.

Frequently Asked Questions

What is the Martin Audio H3+?

The H3+ is a professional three-way horn-loaded loudspeaker designed for high-output sound reinforcement.

What drivers does the H3+ use?

The system combines a 15-inch LF driver, 10-inch midrange driver and 1-inch exit HF compression driver.

What is the coverage of the Martin Audio H3+?

Nominal dispersion is approximately 70° horizontal × 40° vertical.

How much power can the H3+ LF section handle?

The H3+ LF section is rated at approximately 750 W AES.

How loud is the H3+?

Maximum output can reach approximately 138 dB peak, depending on system configuration and measurement conditions.

Is the H3+ good for club sound?

Yes. Its horn-loaded architecture, controlled dispersion and high output make club and high-energy music systems particularly relevant applications.

Can I use the H3+ with subwoofers?

Yes. Dedicated professional subwoofers can be integrated to provide greater low-frequency extension when correctly processed and amplified.

Is the H3+ the same as the H3?

No. They are related models, but their specifications differ. In particular, the H3+ has a higher-rated LF section.

Does the H3+ require processing?

Yes. Appropriate professional amplification, crossover settings, EQ and limiting should be used according to the correct system configuration.

Can you ship the Martin Audio H3+ across Europe?

Yes, shipping can be arranged to supported European destinations