With a total capacity of 20,059, Bluetongue Stadium has played host to many major events. These include International Rugby Union, National Rugby League and National A-League Football matches, branching out to boxing, motorcross and open-air rock concerts as well as a multitude of local sporting and community events.
The construction of Bluetongue Stadium was completed in February 2000, bringing to Gosford a premier multifunctional facility overlooking the beautiful Brisbane Waters. The speaker system installed at that time had been adversely affected by the salt air.
"Some of the speakers weren't working because their components had been corroded," explained Chris Fanning, director of Newcastle-based A1 Audio & Lighting who was asked to design and install a new audio system. "More importantly, the speaker brackets were so corroded the speakers were close to falling down from the roof."
Fanning recommended the Electro Voice Zx5PI 15" two way weather resistant passive PA speakers, along with NetMax DSP control, as the appropriate solution and consequently the west and east grandstands feature 11 EV Zx5PI speakers each covering the upper and lower seating. EV MH640p horns are placed on the north end of each grandstand to service the end zone.
"The EV system delivers all the performance at a cost-effective price," he said. "Dispersion was a major factor when deciding on the Zx5PI as they have the suitable dispersion to fit the existing speaker locations that we had to work with. Rather than change the existing speaker locations it was easier for us to reutilize the existing points. The Zx5PI speakers definitely have the output to cover the areas. It's the same with the end zones where the medium throw horns cover the area well."
Fanning specified a NetMax DSP control for the stadium which is consequently easily divided into eight zones. "We've got limiting on the system through the NetMax as well as different presets," continued Fanning. "So when the games start with the crowd not at capacity, we have the system limited at a certain level but as the stadium fills up the show-caller or operator can simply change the limit settings with a preset. That way the operators don't have to think too much about it."
The installation is being done in stages and in the near future 30 EV Zx1i speakers are planned to cover the balcony areas.
Fanning was aided in the design of the system by Bryan Davidson, Bosch's Senior Engineer for permanent installations, and gratefully acknowledges his input.
(Jim Evans)
