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JBL Pro Launches VTX B28 Subwoofer

Intended to complement JBL’s flagship VTX A-Series loudspeakers, the VTX B28 is a dual 18-inch subwoofer.

JBL Pro VTX B28 Subwoofer
JBL Pro VTX B28 Subwoofer

Northridge, CA (August 18, 2020)—Harman Professional Solutions has unveiled its new JBL VTX B28, a dual 18-inch subwoofer designed to complement the company’s flagship VTX sound reinforcement systems.

The VTX B28 houses a new, Integrated rigging system that allows the B28 to be suspended in omnidirectional or cardioid arrays of up to 16 enclosures. The rigging and various accessories make the B28 appropriate in both mobile and installed sound system applications. The B28 integrates with HiQNet Performance Manager and Line Array Calculator (LAC) software, and features the same industrial design as A- and B-Series loudspeakers, giving the entire system a cohesive look.

At the core of the B28 are two JBL Differential Drive 2288H-M 18-inch woofers, said to be engineered for improved linearity, efficiency and extra-long excursion. The combination of the 2288H-M drivers and the large, central, flared port are intended to aid delivering low-frequency output. FEA-optimized integral bracing aims to eliminate inter-cabinet standing waves, and simplify the structural design.

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The two-point rigging system uses integrated levers and locks, avoiding traditional quick release pins and retaining cables, and allowing the B28 to be stacked vertically or horizontally, using the independent sets of feet on the bottom and sides. Universal M20 mounts interface with supported VTX accessories for constructing complete groundstacked arrays. NL4 connectors on both the front and rear of the unit enable wiring in standard or cardioid configurations.

“The VTX B28 is our new premium subwoofer, and a perfect addition to VTX Series line array systems,” said HARMAN Professional product manager George Georgallis. “As with the B18 subwoofer, we started by taking the best aspects of the previous-generation S28 and G28 and improving performance. Then we optimized the design for a dual 18-inch system, and the result was the B28. We worked very hard to ensure the B28 could meet the most demanding applications, but also focused on configurability, a full suite of accessories, and software applications to make the B28 a solid investment and an outstanding performer for tour sound providers and rental companies.”

HARMAN Professional Solutions •