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Martin Audio MLA prevents sound escape at Japan Jam 2023

Japan Jam 2023, an event held over Japan’s Golden Week holidays, set out to honour the best rock music performed by domestic musicians. Artists are drawn from alternative, indie, metal and other rock music genres, and this year the festival saw a record number of participants.

Chiba City Soga Sports Park, where Japan Jam takes place, is surrounded by heavily populated residential and commercial areas. And so with the lifting of COVID restrictions, and requirement for a higher SPL to be reinstated, emphasis needed to be placed on noise control to prevent sound from escaping into the adjoining neighbourhood.

Promoters - the music journal “Rockin’On” - are responsible for both this event and the popular Rock in Japan festival. Mindful of the solution deployed at last year’s Rock In Japan, they once again turned to MSI Japan’s Martin Audio MLA. With ten years’ experience working with MLA, the PA set-up was designed by MSI Japan’s engineering team.

Each of the two main stages supported hangs of eight MLA enclosures. In addition, seven MLA delay towers were installed at four locations each, for a total of eight different positions. Normally, delay towers are installed on both wings of the audience area, but this time it was installed only on one side to minimise leakage outside the main sound field.

“We had to control sound escape outside the venue to an unprecedented level”, confirms MSI Japan chairman Shuzo Fujii, who was in charge of the Japan Jam system. “Inside the audience field the audio experience was completely different to outside the perimeter.”

This year, MLA played an active role on three stages: Sky Stage, Sunset Stage and Buzz Stage, although due to inclement weather the Sunset Stage had to be cancelled on the final day.

(Photos: Martin Audio)

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