Formerly the Energy Australia Stadium, Ausgrid Stadium has completed the redevelopment of its Western Grandstand with a new audio system, designed and implemented by The PA People.
The new system uses JBL’s Application Engineered (AE) loudspeakers as well as JBL Control 29AV-1 and Control 25AV loudspeakers. All speakers are driven by Crown CTS amplifiers fitted with the latest Crown IQ PIPUSP4/CN DSP card. Overlay processing and control is via BSS London Blu systems.
The loudspeakers for the stand includes weatherised treatment (WRX) for the AE models, which are arranged as six clusters of spaced elements mounted close to the leading edge of the roof, and fill speakers to cover areas shadowed from the main clusters. Each of the six clusters uses a JBL AM5212 and AM4315 loudspeaker to cover the grandstand upper seating and one JBL AM4315 loudspeaker to cover the grandstand lower seating.
Both loudspeaker models feature rotatable horns that allowed them to be installed horizontally. Careful selection of the horn coverage pattern and orientation allows the grandstand upper seating to be serviced by a single enclosure while maintaining SPL variation of within the target ±3dB. Servicing the grandstand upper seating with a single enclosure has the advantage of virtually eliminating interference effects such as comb filtering which occurs when arraying loudspeakers to cover a common zone.
The JBL AM4315 is operated as a passive three-way and is driven from a dedicated channel of Crown CTS2000 amplification which also provides more than 6dB of headroom. The multi-band Progressive Transition mid-high frequency waveguide provides increased sensitivity in the critical midrange vocal region between 500Hz and 2.8kHz. The JBL AM4315 also has extended bandwidth and a well-controlled coverage pattern.
Open arena viewing areas are covered by using the long-throw JBL PD5212/95-WRX weatherized loudspeaker. JBL Precision Directivity (PD) loudspeakers are well regarded by professional sound operators for their excellent pattern control down to 250Hz.
A total of 72 JBL Control 25AV speakers and 24 JBL Control 29AV-1 speakers are used for coverage to the grandstand infill areas.
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More: www.crownaudio.com
