Califone ® International Inc. (800)722-0500 califone.com PI30 | January 2008 Case Study: Dysart Unified School District Surprise & El Mirage, Arizona Working with T roxell Communications, DUSD purchased speakers from Califone International, Inc., to accompany 450 projection systems. The PI30 ‘array’ speakers from Califone are now being used in one high school (about 1 00 classrooms) and the rest are dispersed among K-

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