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Corona: Martin Audio supports return of Japan Jam 2021

Japan Jam 2021 took place at Soga Sports Park in Chiba over the country’s big May public holiday weekend. The annual event, which has already taken place three times at this venue, had to be cancelled last year due to the COVID-19 pandemic - therefore, this was the first event in two years, and it was held under strict infection control conditions.

Last time around, more than 30,000 people participated daily in the festival; however, this year the number was limited to 10,000 per day, and the event was devoid of alcohol. The audience needed to obey the rules such as wearing masks and were able to enjoy the live performance in 1 m square frames arranged in front of the stage.

As in previous years, Martin Audio MLA was adopted as the main speaker, with ten MLA elements (including an MLD Downfill) and three stacks of subwoofers, nine per side in total, on main stage, with the middle sub rear-facing for the cardioid pattern. In addition, four WPM were equipped as front fill/outfill.

Many precautions were taken to avoid infection. “The microphones that would normally have been reused, were completely replaced”, says Bunshiro Hote of sound rental company MSI Japan Tokyo. “As a result, we used five lines (including spares) to operate only the announcements. We introduced a UV irradiation desiccator for some mics that needed to be used by multiple people, while the console was sanitised every time the sound engineer changed. All microphones (vocal mics for the artistes and talkback mics for the engineers) were regulated.”

“Regarding COVID, Tokyo was in a state of emergency and as a neighbouring prefecture, Chiba also needed to prevent the spread of infection. It made us more nervous and considerate of noise complaints than usual”, continues Hote, who was also in charge of the system design. “When we did the sound check, we played the CD at 100 dBA at FOH, and prepared three delay settings of 60 m, 70 m, and 80 m from the stage for the main MLA area, and assessed to what degree it could be heard at the monitoring point outside the venue. As a result, we chose the 70 m pattern as the standard in the three-stage MLA area, and since the Lotus Stage was the nearest to the street, we started this at 60 m.”

(Photos: Rockin’on Group official)

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