With integrated whole-house audio systems becoming more popular than ever, Klipsch designed the CDT5800C to meet the markets demand for a high-performance in-ceiling loudspeaker that easily challenges the inherent limitations of fixed locations. The CDT-5800-C features a 1-inch titanium tweeter mated to a swiveling 100-degree Tractrix Horn. This swiveling horn design dramatically increases efficiency by enabling the speaker to produce more output using less energy.
I purchased the CDT-5800 from http://www.sounddistributors.com/ and Eric Winston was great to deal with. He responded instantly to any question and was very helpful through out.
The speakers themselves are fantastic and are worth the price.
