B Series – Bass Enclosures

The B Series from Alcons Audio is a versatile range of subwoofers. Common features include the availability of touring or installation models, as well as the use of premium transducers, airflow-optimised cabinets and prewiring for Signal Integrity Sensing™ throughout. These subwoofers provide a superb foundation for applications requiring visceral impact in addition to the traditional benefits of the Pro-Ribbon driver.


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The BF151 mkII is the smallest subwoofer in the Alcons range, offering a single premium front-facing 15″ driver in a ported enclosure.

Despite the modest dimensions, the BF151 mkII gives a strong performance, and when combined with the Alcons VR8 and a Sentinel 3, provides a truly stunning experience from an ultra-compact system.

The woofer is a specially-designed 4-ohm variant, allowing for efficient amplifier loading, and there is a second NL4 connector on the front panel, allowing for convenient and tidy cardioid configurations to be constructed from multiple units.

The BF151mkII is prewired for Alcons’ Signal Integrity Sensing™, allowing for exceptional control and protection even when driven to extreme levels.


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The BF181mkII places a single premium 18″ transducer inside a cabinet featuring Alcons’ proprietary X-Venting™ ports for maximum output with minimal port-compression effects.

Though the BF181 mkII can be used in a variety of applications, it makes an ideal partner for the Alcons VR12, which makes for an extremely powerful and compact  portable or installed system in combination with an Alcons Sentinel Amplified System Controller. Factory presets allow for simple selection of alternative voicings such as “punch” or “sub,” depending on the required effect.

The woofer is a specially-designed 4-ohm variant, allowing for efficient amplifier loading, and there is a second NL4 connector on the front panel, allowing for convenient and tidy cardioid configurations to be constructed from multiple units.

The BF181 mkII is prewired for Alcons’ Signal Integrity Sensing™, allowing for exceptional control and protection even when driven to extreme levels.


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The BF302 mkII packs a phenomenal punch from a relatively compact cabinet, with dual 15″ premium woofers in a slimline ported enclosure.

Each 4″ voice-coil woofer is mounted inside its own individually-vented chamber with large bass reflex ports for excellent breathing capability, and the cabinet features extensive internal bracing to increase rigidity.

There is a second NL4 connector on the front panel, allowing for convenient and tidy cardioid configurations to be constructed from multiple units.

The BF302 mkII is prewired for Alcons’ Signal Integrity Sensing™, allowing for exceptional control and protection even when driven to extreme levels.


BF362mkII-317x500

The BF362 mkII is the largest front-firing subwoofer in the Alcons range, offering dual premium 18″, long-excursion 4″ voice coil woofers in a ported enclosure.

Each woofer is mounted inside its own individually-vented chamber, exiting into the X-Venting™ bass reflex ports for excellent breathing capability, and the cabinet features extensive internal bracing to increase rigidity.

Factory presets within the Sentinel Amplified System Controller allow for simple selection of alternative voicings such as “punch” or “sub,” depending on the required effect, as well as preset phase / filter / gain configurations to facilitate simple integration with other Alcons systems.

There is a second NL4 connector on the front panel, allowing for convenient and tidy cardioid configurations to be constructed from multiple units.

The BF362 mkII is prewired for Alcons’ Signal Integrity Sensing™, allowing for exceptional control and protection even when driven to extreme levels.


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Few subwoofers can stand comparison with the BQ211.

This double-tuned, quarter-wave loaded high-impact subwoofer contains a single carbon-coned 21″ neodymium transducer for high pressure loading, and the 5.3″ voice coil is force-ventilated for lower power compression and prolonged high performance, yet the overall system footprint is remarkably compact for such a powerful system.

There is a second NL4 connector on the front panel, allowing for convenient and tidy cardioid configurations to be constructed from multiple units.

The BQ211 is prewired for Alcons’ Signal Integrity Sensing™, allowing for exceptional control and protection even when driven to extreme levels.


BC332-490x500

The innovative BC332 utilises a front-firing 18″ woofer along with a 15″ rear-radiating woofer combined with large vents for improved breathing and low port compression to deliver a single-box cardioid solution within a compact enclosure.

Processing is handled within the Sentinel Amplified Loudspeaker Controller to provide different settings for attenuation either to the rear or to the side of the subwoofer, as well as optimising the acoustic response of the subwoofer.

The 4 ohm impedance maximises power transfer from the amplifier and the BC332 is prewired for Alcons’ Signal Integrity Sensing™, allowing for exceptional control and protection even when driven to extreme levels.


BC543-500x307

The cardioid BC543 is a truly mighty subwoofer, featuring triple 18″ carbon cones with 5.3″ voice-coils and large X-Venting™ bass reflex ports for low power compression and extreme output.

Processing is handled within the Sentinel Amplified Loudspeaker Controller to provide different settings for attenuation either to the rear or to the side of the subwoofer, as well as optimising the acoustic response of the subwoofer.

The BC543 is prewired for Alcons’ Signal Integrity Sensing™, allowing for exceptional control and protection even when driven to extreme levels.