When California Speedway became Auto Club Speedway in 2008, the new owners began a long-term project of making improvements to the venue's infrastructure. Two years later, the Speedway's sound system was upgraded, bringing in 104 of Biamp's Community R.5HPT three-way loudspeaker systems.
A request from the track's directors to move the speakers from the wheel fence was a great opportunity to redesign the system. The new system places 104 R.5HPT boxes on posts at the foot of the stands, providing coverage to the main seating area. Several of the M4 units have been repurposed to reinforce coverage at the outer seating zones.
By using the R.5s and focusing them closer to the stands, we're able to achieve much more uniform coverage and greater intelligibility. People are hearing the announcements and getting information on what's going on. We set out to create a better system here, and I think we've succeeded."