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NEXO brings jazz to former aircraft hangar

NEXO brings jazz to former aircraft hangar

NEXO brings jazz to former aircraft hangar


Since the first Java Jazz Festival more than 15 years ago, the event has become a solid fixture in Indonesia. Having taken a Covid-enforced hiatus over the past couple of years but returned to Jakarta International Expo Kemayoran over the weekend on 27–29 May, with bands and musicians performing across nine stages.

GRAB Hall, a former aircraft hangar, was one of the more challenging acoustic environments at the festival, where local rental company, DSS Sound Systems, deployed a NEXO GEO M12 line array, with support from the technical team at Yamaha Music Indonesia Distributor (YMID).

“With no acoustic treatment on the concrete walls or domed ceiling, the room generates a lot of unwelcome resonance at certain frequencies, making it very difficult to achieve both clarity and impact from the sound system,” reported Ryan Indra Kusumah from YMID. “But the NEXO system was able to overcome the challenges and performed brilliantly.”

With Yamaha Rivage PM7 and CL5 consoles mixing FOH and monitors, the full system comprised of two hangs of nine GEO M12s, with 12 MSUB18 and four RS18 subs, and four PS15s as front fills. Amplification and processing came from five NEXO NXAMP powered controllers.

“Using a NEXO system of this scale in a hall measuring 38m x 35m obviously gave us plenty of headroom, but our first consideration was to achieve even coverage and frequency directivity control to tame the acoustic problems evident in such a challenging environment” commented Norman Hajadi, the system engineer appointed to oversee the system.

“We deployed the subs in cardioid configuration after modelling the system and venue in NEXO NS-1 simulation software,” reported Gabriel from YMID’s on-site technical team. “The result was spot on and, with only minor adjustment, worked perfectly to minimise low end bleed onto the stage, while distributing low-end energy evenly throughout the venue.”

“Kudos to the NEXO NS-1 simulation that so accurately predicted the coverage of the system within the hall” added YMID tech team member, Edmonds. “Following the system we designed in NS-1, we flew the speakers and were ready to go. With slap back avoided, we could direct SPL precisely where we needed it.”

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