EAW’s CSC Series Screen Channel Systems A Technical Overview
System Overview The CSC Series three-way screen channel loudspeaker systems from EAW address many issues raised by the changing design trends of modern cinemas. The features and benefits of this product design are manifested in two models at the present time: the CSC923 (and its biamplified version, CSC923X), and the CSC723 (and its biamplified version, CSC723X). The CSC923 is intended for screen channel use in very large cinemas exceeding 90 feet (27.4 meters) in length from screen to last row.
Since the vertical coverage pattern tilts downward, we recommend little or no downward horn aiming. Instead the system is aimed by elevation; the HF horn should be elevated to a height where it is directly in line with the last row of seats. This has been found to provide the best coverage front to back, and significantly simplifies setup and installation by removing the “guesswork” traditionally associated with horn-aiming behind the screen.
Unfortunately, optimization in one area usually results in trade-offs elsewhere. For example, spatial performance (pattern control) can be optimized by very large horns, but the resulting enclosure’s utility will be severely degraded. The goal of the CSC Series was to optimize performance attributes in all areas without compromising others.
Traditional Mid Cone with Phase Plug, Side View Cutaway problem at the source. The cone transducer’s tempoVA4 Phase Plug uses Radial Slots to Maintain Source Directivity ral smear is corrected by precisely aligning the cone/ dustcap/surround geometry to maintain temporal unity. The distance to the dustcap is slightly longer to Dustcap compensate for differences in material density. Radial Slots Surround The phase plug, whose geometry is matched to Cone the cone, then serves to leave this unity intact.
One Main Street, Whitinsville, MA USA 01588 • (508) 234-6158 • FAX (508) 234-8251 • Email info@eaw.com • Web http://www.eaw.com EAW products are continually improved. All specifications are therefore subject to change without notice.
