d&b Audiotechnik B2 Subwoofer for Sale | Dual 18″ Professional B2-SUB

The d&b Audiotechnik B2 Subwoofer for sale is a high-output professional low-frequency solution built for demanding concert touring, festivals, large venues and high-performance PA systems. Using two 18-inch long-excursion drivers in a bandpass horn-loaded enclosure, the B2-SUB delivers powerful bass extension while offering both Standard and INFRA operating modes for different system requirements.

Unlike many newer compact subwoofer designs, the B2 was developed around substantial cabinet volume and dual large-format drivers. As a result, it remains particularly relevant for professional users who operate established d&b systems and need serious low-frequency reinforcement.

Built for High-Output Low Frequencies

The B2-SUB uses two 18-inch low-frequency drivers inside a bandpass horn-loaded cabinet.

This configuration was designed to produce substantial acoustic output while maintaining controlled low-frequency reproduction. Furthermore, the enclosure can operate in two different modes, allowing engineers to adapt its frequency range to the role it needs to perform within a larger PA system.

B2-SUB Technical Overview

These specifications make the B2 considerably different from a conventional compact bass cabinet. It was developed for professional systems where low-frequency headroom and large-scale deployment matter.

Standard Mode for Powerful Bass Reinforcement

In its standard operating mode, the B2-SUB covers approximately 37 Hz to 90 Hz.

This allows the cabinet to provide powerful bass reinforcement beneath compatible mid/high loudspeaker systems. Consequently, Standard mode is useful when the B2 needs to cover a broader portion of the system’s low-frequency range.

For concert sound, large events and professional rental systems, this flexibility allows the B2 to serve as the primary subwoofer layer in an appropriately configured system.

INFRA Mode for Deeper Bass Extension

The B2 also provides an INFRA operating mode, extending its low-frequency response down to approximately 32 Hz while limiting the upper operating range to around 68 Hz.

This changes the role of the cabinet.

Rather than covering the entire conventional subwoofer range, INFRA mode allows the B2 to concentrate on the deepest part of the audio spectrum. Therefore, it can complement other subwoofer systems when additional low-frequency extension is required.

This dual-mode capability is one of the characteristics that helped make the B2 a versatile component within established d&b touring systems.

Dual 18-Inch Driver Configuration

Each B2 cabinet contains two 18-inch long-excursion low-frequency drivers.

For buyers building larger inventories, this means:

• 1 B2-SUB = 2 × 18″ drivers
• 2 B2-SUBs = 4 × 18″ drivers
• 4 B2-SUBs = 8 × 18″ drivers

Therefore, multiple B2 cabinets can provide considerable low-frequency capability when configured and processed correctly.

Up to 139 dB Maximum SPL

The B2 was designed for applications where substantial acoustic output is required.

The supplied specifications state a maximum SPL of approximately 139 dB in Standard mode and 136 dB in INFRA mode, measured at one metre under the applicable conditions.

However, maximum-output figures should always be interpreted according to the original d&b measurement methodology, amplifier configuration and operating mode.

For professional buyers, the more important consideration is how the B2 integrates into the complete d&b system rather than treating a single SPL figure as the only measure of performance.

Cardioid Subwoofer Array Applications

The B2 can also form part of appropriately designed Cardioid Subwoofer Array (CSA) configurations.

Cardioid low-frequency arrangements are useful in professional sound reinforcement because they can help manage unwanted bass energy behind the subwoofer system.

This can be particularly valuable on concert stages and at large events where uncontrolled low-frequency energy can affect performers, microphones and surrounding areas.

However, cardioid configurations depend on correct cabinet positioning, processing and system design. Therefore, users should follow the appropriate d&b documentation rather than relying on generic subwoofer-array settings.

Compatible d&b Amplification

The B2 belongs to an established generation of d&b professional loudspeaker systems and requires appropriate d&b amplification and processing.

Depending on the system generation and configuration, B2 setups have been associated with d&b amplifier platforms such as the D12, while later system environments may involve other compatible d&b amplification subject to the applicable manufacturer presets and documentation.

Before connecting a B2-SUB to D20, D80 or another amplifier platform, buyers should confirm current manufacturer compatibility and the required loudspeaker setup.

That approach protects both the loudspeaker and amplifier while ensuring the system operates as intended.

Heavy-Duty Touring Construction

At approximately 102 kg, the B2-SUB is a substantial professional cabinet.

Its enclosure uses marine plywood with a hardwearing protective finish intended for professional use. A rigid metal grille with acoustic foam protects the front of the cabinet.

In addition, eight integrated handles help crews position and move the enclosure.

Cabinet Dimensions

Height: 580 mm
Width: 1160 mm
Depth: 920 mm
Weight: approximately 102 kg

Because of its size and weight, appropriate handling and transport procedures are important when moving the B2 between warehouses, trucks and venues.

Integrated Wheels for Easier Transportation

Four heavy-duty wheels are fitted to the rear of the cabinet.

This practical detail matters because the B2 weighs more than 100 kg. Consequently, crews can roll the enclosure during normal transportation rather than relying entirely on manual lifting.

For touring and rental businesses, integrated mobility can significantly improve day-to-day handling of a larger B2 inventory.

Designed Primarily for Ground Deployment

The B2 is designed primarily for ground-stacked low-frequency applications.

This makes it suitable for deployment beneath or alongside appropriately configured professional loudspeaker systems.

Depending on the production, multiple cabinets may also be arranged to achieve the required output and low-frequency directivity.

Final placement should be determined by experienced system technicians using appropriate prediction and measurement techniques.

A Proven Choice for Large-Scale Sound

The B2-SUB is particularly suited to applications where low-frequency output is a major part of the system design.

Typical professional uses include:

• Concert touring
• Outdoor music festivals
• Arenas
• Large performance venues
• Professional PA rental
• High-output FOH systems
• Electronic music events
• Touring productions
• Large event-production systems
• Bass extension for established d&b systems

Its combination of dual 18-inch drivers and selectable operating modes makes it especially useful for companies maintaining compatible previous-generation d&b inventories.

For Existing d&b System Owners

For buyers already operating B2-compatible d&b equipment, additional cabinets can provide a practical way to expand low-frequency inventory without changing the entire PA platform.

Furthermore, experienced d&b users may already have the required amplification, processing, cabling and system knowledge.

For new buyers, however, it is important to remember that purchasing the cabinet alone does not create a complete PA system. Appropriate amplification, processing, cabling and professional system configuration remain necessary.

Established d&b Technology

The B2 belongs to an earlier generation of d&b professional subwoofer technology rather than the manufacturer’s newest SL-Series or current subwoofer platforms.

That distinction should be clear when evaluating the product.

Its value lies primarily in its established professional design, substantial low-frequency capability and usefulness within compatible d&b inventories.

Therefore, buyers should consider cabinet condition, driver originality, service history and amplifier compatibility when evaluating individual B2-SUB units.

Shipping Across Europe

Euro Electronic Space can arrange delivery of the d&b B2-SUB to supported destinations across Europe, including Germany, the Netherlands, France and Italy.

Because each cabinet weighs approximately 102 kg and has substantial dimensions, freight requirements will depend on the number of units ordered and the destination.

For larger quantities, buyers should request a freight quotation based on the complete shipment.

Questions About the d&b B2-SUB

How many drivers are inside a B2-SUB?

Each B2 contains two 18-inch long-excursion low-frequency drivers.

How low does the d&b B2 play?

The supplied specifications state approximately 37 Hz in Standard mode and 32 Hz in INFRA mode.

What is INFRA mode used for?

INFRA mode concentrates the B2 on deeper low-frequency reproduction, with a stated operating range of approximately 32–68 Hz.

How much does a B2-SUB weigh?

The cabinet weighs approximately 102 kg.

Does the B2 have wheels?

Yes. Four heavy-duty rear wheels help with transportation.

Can B2 subwoofers be used in cardioid configurations?

They can form part of properly designed CSA configurations. However, cabinet placement and processing must follow the appropriate professional system design.

Is this a current d&b subwoofer model?

No. B2 is an established previous-generation d&b product. Buyers should therefore confirm amplifier compatibility and available manufacturer support for their intended configuration.

Can the B2-SUB be shipped within Europe?

Yes. Freight can be arranged to supported European destinations, including Germany, France, the Netherlands and Italy.