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L-Acoustics Debuts New SB28 Subwoofer Enclosure

At the 123rd AES Convention this week in New York City’s Javits Center (AES stand 1036/demo room 2D04), L-Acoustics will show its new SB28 enclosure, designed as the successor to the company’s SB218 subwoofer. The new model promises more powerful low-frequency impact and improved bass articulation for tours, installations and corporate productions using KUDO, V-DOSC, dV-DOSC and ARCS systems.

The 4-ohm SB28 contains two front-loaded, 18-inch direct radiating transducers integrated into a bass-reflex tuned enclosure capable of operating down to 25 Hz. These specially designed LF transducers are said to provide an exceptional cone excursion capability combined with low thermal compression at the highest operating levels. The enclosure’s bass-reflex vents feature a progressive profile, allowing for truly laminar airflow. The combination of the SB28’s modern components with the new vents promises an improved +5dB SPL output compared to the previous standards.

Control and amplification of the SB28 is managed by L-Acoustics’ new LA8 amplified controller platform. The LA8’s DSP filtering encompasses advanced crossover functions, system EQ, and L-Drive thermal and over-excursion protection of the transducers.

The amplified controller offers a choice of two drive modes for the SB28: standard and cardioid. Each mode features a highpass filter at 60 Hz when using the SB28 as a companion to KUDO, V-DOSC, dV-DOSC, ARCS and KIVA systems, as well as an additional 100Hz highpass filter option when used with dV-DOSC or ARCS systems.

Made of high-grade Baltic birch plywood, the cabinet also features industry standard aeroquip rails for column rigging, a single 4-pin Neutrik Speakon connector on the rear panel, integral side handles for portability, and a durable black epoxy perforated steel grille covered with an acoustically transparent ‘Airnet’ cloth.

Measuring 21.7×51.2×27.6 inches (HxWxD) and weighing 205 pounds, the new SB28 and its related amplified controller, the LA8, are expected to both begin shipping this month.

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