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L-Acoustics A Series delivers speech intelligibility at Bletchley Park’s new Fellowship Auditorium

Bletchley Park, a World War II codebreaking heritage site and museum, has further enriched its visitor experience with the opening of the Fellowship Auditorium. This purpose-built venue, unveiled in October 2023, is the latest addition to the Milton Keynes site.

The auditorium features 250 seats and is part of a broader development that includes the Diesel House reception area and the Radley Room social space, as well as a new Learning Centre. The auditorium’s 180-degree radial seating arrangement presented unique acoustic challenges that required expert attention. L-Acoustics Certified Provider Adlib won the tender to supply the complete audio solution for the space.

“The unique configuration of the space, with seats arranged in a 180-degree arc around the stage, meant that crystal-clear speech reproduction was essential”, says Tim Robinson, System Designer at Adlib. “As primarily a lecture venue, every seat needed perfect intelligibility.” L-Acoustics Soundvision played a crucial role in the system design process, enabling Adlib to model and verify proposed solutions while providing visualisation tools that helped other trades understand the final implementation.

The project presented unique design considerations where the primary objective was to ensure sound would come from directly in front of every listener, rather than being biased towards one ear or another. This led to an innovative approach using a monaural system with a single source.

The installation comprises six horizontally arrayed L-Acoustics A10i Wide constant curvature enclosures providing the requisite 180 degrees of coverage, complemented by two KS21i compact subwoofers. The system is powered by LA4X and LA2Xi amplified controllers. The horizontal array configuration, facilitated by A10i-Lift rigging elements and various linking plates, ensures even coverage throughout the space.

(Photos: L-Acoustics)

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