LEA Amps Power Nonthaburi Gymnasium Stadium

In order to promote a varied program of activities, the Nonthaburi Provincial Administrative Organisation demanded the best audiovisual and lighting systems for the available budget. As well as supporting the artistic, cultural, and educational communities, the AV would need to support futsal competitions up to the ASEAN league level. Staff members attended multiple events and demonstrations across Thailand to evaluate audio systems. After receiving several design tender applications, the voting committee awarded Fuzion Far East (FFE) the contract to supply and install the AV technology, which included several LEA Connect Series amplifiers.

“A well-designed sound system should ensure fans feel part of the action by delivering intelligible announcements and music to every seat,” said FFE project manager Sansak Seedokbuab. “By laying out approximately 3,000 seats onto the futsal playing area, the stadium can also promote multipurpose musical events from the stage.”

Following acoustic measurement analysis and software simulations, FFE specified L-R Nexo GEO M loudspeaker arrays for the main PA, each combining six M1210 12-inch elements offering 10° vertical dispersion, with two M1220 downfills providing wider coverage. The lower frequencies are supplemented by four-perside MSUB18 subwoofers suspended as adjacent L-R arrays.

During major futsal competitions, a preset focuses the main L-R Nexo GEO M12 arrays toward the audience. For smaller events, a distributed network of Nexo ePS10 10-inch enclosures covers the main seated areas. All 20 cabinets are suspended from an overhead framework grid and were primarily specified for speech intelligibility and minimal reverberation.

FFE’s team decided to use LEA Connect Series 1504 amplifiers to power the main and distributed loudspeaker systems. Located in a rack installed on an overhead catwalk between the main audience sections, the IoT-enabled 4-channel 1504 provides 1500 watts per channel into 2, 4, and 8 ohms, and 70Vrms and 100Vrms. It also supports Hi-Z (70V or 100V) and Lo-Z selectable by channel and features Smart Power Bridge technology.

In addition to enhancing the fan experience, ease of use and futureproofing were the underlying design parameters for Seedokbuab and his team. “In offline mode, the technicians can manage and control all the audio and lighting parameters via LEA’s WebUI,” he explained. “The LEA Professional amplifiers can also be managed and configured from a PC or a wireless touchscreen when connected over the amplifier’s Wi-Fi access point or the stadium’s existing Wi-Fi network. The amplifier parameters and status, including heat and inputs, can be checked, and the amplifiers can be turned on remotely over Wi-Fi when online or accessed through our network in offline mode,” added Seedokbuab.