User manual QSC AUDIO SC-422 DATASHEET 06-20-08

[. . . ] Cinema Loudspeaker System SC-422 Features · 2-way, bi-amplifiedscreenchannelsystem · HF-75provides90°horizontalby+20°to-30°verticalcoverage · F-4215isconstructedofMDFandfeaturessinglewooferchambers L · Low-distortionwaveguideprovideshighlyarticulatedialogue · Shallowdepth(20")facilitatesinstallation · HXTMapprovedforprofessionalcinemaapplications T Developed specifically for the unique requirements of professional motion picture playback, the SC-422 extends QSC's commitment to the cinema market. [. . . ] Power limiter circuitry protects the driver from overpowering and a response correction filter smoothes the frequency response of the horn/ driver combination. The driver and equalization network provides for more reliable operation, ensuring the show will go on. The LF-4215 dual 15" (381mm) low-frequency enclosure is designed specifically to address the extended low-frequency response required for cinema applications. The LF-4215 covers the frequency range from 35 Hz to 1000 Hz, depending upon the high-frequency system requirements. Close Coupled Woofers (CCW), with their tight spacing between woofers, improves coupling and keeps coverage angles wide over a greater frequency range than more widely spaced designs. The SC-422 is designed for ease of installation. The HF-75 components come pre-assembled to reduce field assembly time. Three bolts are all that are required to secure the HF-75 to the top of the LF-4215 enclosure. Specifications Nominal Coverage Frequency Range Crossover Frequency SC-422 90° horizontal x +20 to -30° vertical 38 Hz ­ 16 kHz (-6 dB) 700 Hz, 24 dB per octave LF-4215 HF-75 8 107. 5 dB Impedance Sensitivity 1 watt /1 meter, half space Maximum Input Power1 8 hours of 6 db crest factor IEC 268 noise spectrum 2 hours of 6 db crest factor pink noise, 50 Hz ­ 20 kHz, AES method 4 99. 5 dB 800 W RMS 1000 W RMS 60 W RMS 80 W RMS Recommended Amplifier Power 1600 W RMS maximum Recommended Processing Connectors Subsonic filter below 30 Hz, > 18 dB per octave Barrier strip screw terminals accept up to #10 AWG stranded wire Two 15" (381mm) high efficiency, extended bass woofer featuring 4" copper voice coils Quasi B4 alignment, ported enclosure with fully flared ports, symmetrical port design, tuned to 36 Hz, constructed of MDF and heavily braced. [. . . ] Patents may apply or be pending. 1675 MacArthur Boulevard · Costa Mesa, CA 92626 · Ph: 800/854-4079 or 714/957-7100 · Fax: 714/754-6174 SC-422 Spec Sheet ­ 06/20/08 qscaudio. com [. . . ]