the Casa Grande Ruins, one of America's oldest prehistoric and cultural reserves
USA - Less than an hour south of downtown Phoenix lies the Casa Grande Ruins, one of America's oldest prehistoric and cultural preserves. Built by the native peoples who farmed the Gila Valley in the early 13th century, the ruins include the remains of several ancient Hohokam structures, as well as elaborate irrigation systems. The largest of these structures is a massive four-story edifice whose adobe walls have withstood the harsh desert climate for more than 700 years.

Designated a national monument in 1918, the grounds are protected and preserved by the National Parks Service. In the late 1930s the Civilian Conservation Corps built a handful of administrative buildings adjacent to the ruins, using local soils for adobe block construction.

Little has changed since 1940, until now. Designed and built by Phoenix firm Nagaki Design Build Associates, the newly expanded Visitors Center recently opened the doors on a new rammed-earth theater. Those touring the ruins can now begin their journey by immersing themselves in a powerful video presentation that teaches them about the history of the ruins, and of the tribes who built them.

The centre includes a modestly sized multi-purpose theatre, outfitted with state-of-the-art HD video and full surround sound. Designed and installed by Muncie, Indiana-based No Limits AV, the audio system utilizes five Renkus-Heinz CF-Series loudspeakers. Three CFX81 two-way 8-inch speakers cover system's left, right, and center channels, while the surrounds are handled by a pair of CFX61 two-way 6 1/2 -inch speakers.

"We've done a number of projects in our National Parks, and we've used Renkus-Heinz loudspeakers on several," explains Brent Gardiner, No Limits AV's lead technician. "This particular theatre was similar in size and scope to another theatrewe'd recently completed. We liked the way the Renkus-Heinz speakers performed, with good sound and good intelligibility. We liked the way they looked, and we liked the ease with which they installed. So it made sense to use it again on this project."

The theatre is also used for live presentations, including local historians and visiting professors, covering such topics as Native American artwork, desert flora and fauna, Southwestern archaeology, and other related subjects. The system is set up to easily accommodate input from a laptop computer or other presentation source.

(Jim Evans)


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