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Aug 01, 2023

Alcons’ modular subwoofer is a flexible flier

Alcons’ modular subwoofer is a flexible flier The QB363 mkII is a modular column

Alcons’ modular subwoofer is a flexible flier

The QB363 mkII is a modular column bass system from Alcons Audio. It can be used as a low-frequency extension (LFE) system to the company's Q-series line-source column systems as well as an arrayable LFE system with any Alcons system.

Designed as a subwoofer to expand the manufacturer's QRP40 into a full-range stack system, Alcons says the QB363 mkII is also a more economical solution for taller bass arrays. It can be stacked or flown in multiples, making it suitable as as building block to form bass arrays, for obtaining low-frequency projection and throw control in acoustically challenging spaces or in long-throw applications. The controlled (cylindrical) projection of the Q-series can be extended to lower frequencies by enlarging the LFE array length.

The system's 12-inch transducers feature a large, dual 3.5-inch voice-coil Neodymium motor to enable an extended excursion while maintaining a high sensitivity. Meanwhile, its tightly spaced, direct-radiating Neodymium drivers breathe through large, symmetrically positioned bass-reflex vents, increasing overall output while reducing port compression. The ports are part of the cabinet's integral structure, for increased rigidity under a minimal system weight.

It has 5.3Ω system impedance for efficient amplifier channel loading when assembled in multiples; an array of six 12-inch woofers can be driven by one Sentinel channel.

The QB363 mkII is powered and controlled by the ALC amplified loudspeaker controller and offers QB363-specific drive processing. The integrated factory presets in the ALC drive processor offer gain, phase, array length and filtering matching with all Alcons pro-ribbon sound systems.