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# 1939 Eidophor

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COSTA MESA, CA—Oct 7, 2009

QSC Audio Introduces Flyable 4-Way Tri-Amped Speaker System for Dome and Large Format Cinemas

DCS SC-424-8F Loudspeaker Expands Popular Digital Cinema Products Line
QSC Audio is proud to announce the new purpose-designed DCS SC-424-8F flyable, four-way, tri-amplified speaker system for Dome and Large Format cinemas that require suspended mounting of screen channels, or point source surround channels.  Making another significant breakthrough in the D-Cinema market, the DCS SC-424-8F joins QSC Audio’s popular cinema product lines and follows the success of their award-winning DCP 300 Digital Cinema Processor.

Both the Mid/High and LF enclosures are built with common dimensions to facilitate easy installation in vertical or horizontal arrays and are constructed of heavily braced, 15mm concert tour-grade plywood.  In addition, 16 M10 attachment points-per-enclosure are provided for safe and easy suspension.
The DCS SC-424-8F also features a unique coax HF/VHF diaphragm, which has less mass than traditional diaphragms, resulting in exceptional dynamic range, extended high frequency response and lower distortion.

States Francois Godfrey, QSC Director of Sales, Cinema, “This system has been developed specifically for the unique requirements of Multi-Purpose, Large Format and Dome motion picture playback.  The two main units comprise the MHV-1090F mid-high / very-high-frequency system, and the LF-4215-8F low-frequency system aimed purposely at applications where a point-source surround channel or screen channel must be suspended or flown rather than mounted on a platform or floor. ”

The MHV-1090F mid-high / very-high-frequency system features a high output, horn loaded 10" midrange cone driver and a coaxial neodymium high-frequency / very high-frequency compression driver. The MHV-1090F includes a driver protection network and a passive crossover for tri-amp operation.  A high power 10" cone driver allows operation as low as 250 Hz and up to 1800 Hz to ensure that most of the dialogue range is reproduced by a single element, for unmatched intelligibility.

The coaxial neodymium high-frequency / very-high-frequency compression driver provides a dramatic improvement in dynamic response, clarity and transparency, while the annular diaphragms eliminate the break up of conventional dome drivers that cause a harsh, metallic sound.

The LF-4215-8F dual 15  (381 mm) low-frequency enclosure is designed for safe and easy suspension via M10 fly points.  The heavily braced, tour grade construction cabinet provides great strength while keeping weight to a minimum.

The SC-424-8F is designed for ease of installation. The MHV-1090F and LF-4215-8F components come pre-assembled to reduce field assembly time, and both enclosures have the same dimensions to allow stacked or side-by-side arrays. Each enclosure is fitted with 16 x M10 fly points for safe and secure suspension via installer-provided mounting hardware.

Also available is the companion DCS SC-424-8 system, which provides identical acoustical performance in a standard, non-suspended version.

Outboard digital processing, such as the QSC DCP 300, DCM 30D or Basis is required to provide the active crossover between the low, mid, and high-very high frequency drivers.  Separate amplifiers are required for the low, mid and high-very high frequency channels.  The QSC DCA 1644 4-channel amplifier is the ideal choice for the SC-424-8F.   Channels 1 and 2 in bridge mode deliver over 800w to the LF enclosure and channels 3 and 4 provide 250w to each of the highly efficient Mid and High frequency horns.

QSC provides a full range of complementary loudspeaker products to meet all of your Large Format cinema speaker needs.  From 18  and 21  subwoofers for earthshaking bass to the smallest ceiling speakers for your lobby PA, QSC is the one place to go for loudspeakers, amplifiers, DSP and network remote control.  One brand, one call - it couldn’t be easier to get great sound.
QSC Contacts: Danny Pickett, 
Director, Global Cinema Sales
Cinema Marketing Manager, 
About QSC Audio Products, LLC: QSC is the world’s leading manufacturer of professional power amplifiers, loudspeaker systems, and advanced audio products tailored for the cinema, contracting, live sound and music industries.  QSC is the leader of complete cinema audio technology under one brand. After nearly four decades, QSC Audio Products, LLC, has become a globally recognized leader in professional audio. This prominence is the result of the company's mission to establish new standards of reliability and performance through the development of breakthrough technologies. QSC's products meet the demanding requirements of audio professionals in concert, installation, portable entertainment and cinema applications. QSC Audio Products, LLC Directory page QSC Audio Products, LLC Web Site
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