QSC SC-324 Specification Sheet

of professional motion picture playback, the SC-324 extends QSC’s commitment to the cinema market. As a member of the DCS Digital Cinema Speaker Series, the SC-324 is a four-way, selectable tri or quad-amplified screen channel loudspeaker system comprised of two main units - the MHV-1090 mid- high-very high-frequency system and the LF-3215 low-frequency system. The MHV-1090 mid-high-very high system features a high output, horn loaded 10" midrange cone driver and a coaxial neodymium high-frequency/very high-frequency compression driver . The MHV-1090 includes a driver protection network and a passive crossover for tri-amp operation. The protection circuitry prevents low-frequency signals from damaging the high-frequency and very high-frequency driver. A high power 10" cone driver allows operation as low as 250 Hz and the advanced phase plug coupling permits a crossover point of up to 1800 Hz to the high-frequency horn. This ensures that most of the dialog 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. The annular high-frequency diaphragm covers the frequency range between 1800 and 7000 Hz with a smooth, linear response. The large diaphragm excursion of +/-0.8 mm results in high output and increased power handling. The very high- frequency driver covers the frequency range from 7000 to 22,000 Hz and eliminates the dome break up of conventional drivers that can cause resonance and harsh, metallic sound. The LF-3215 dual 15" (381mm) low-frequency enclosure is designed specifically to address the extended low-frequency response required for cinema applications. The LF-3215 covers the frequency range from 35 Hz to 250 Hz. 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-324 is designed for ease of installation. The MHV-1090 components come pre-assembled to reduce field assembly time. Three bolts are all that are required to secure the MHV-1090 to the top of the LF-3215 enclosure. SC-324 Cinema Loudspeaker System Features • Four-way selectable, tri or quad- amplified screen channel system • Unique HF/VHF diaphragm has less mass than traditional diaphragms resulting in exceptional dynamic range, extended high-frequency response and lower distortion • LF-3215 is constructed of MDF and features single woofer chambers • Low-distortion waveguides provide highly articulate dialogue • Shallow depth (20") facilitates installation • THX™ approved for professional cinema applications NEW! Specifications SC-324 Nominal Coverage 90° horizontal x +20 to -30° vertical Frequency Range (-6 dB) 33 - 20 kHz Active Crossover Frequencies 250, 1700 and 6000 Hz, 24 dB per octave LF-3215 MHV-1090 Impedance 4Ω MF: 8Ω HF: 8Ω VHF: 8Ω Sensitivity 1 watt /1 meter, half space 98.5 dB Tri-amp MF:105 dB HF/VHF: 110 dB Quad-amp MF: 105 dB HF: 110 dB VHF: 110 dB Maximum Input Power1 8 hours of 6 db crest factor IEC 268 noise spectrum 600 W RMS MF: 275 W RMS HF/VHF: 230 W RMS MF: 275 W RMS HF: 150 W RMS VHF: 80 W RMS 2 hours of 6 db crest factor pink noise, 50 Hz - 20 kHz, AES method 800 W RMS MF: 800 W RMS HF/VHF: 500 W RMS maximum Recommended Amplifier Power 1200 W RMS maximum MF: 800 W RMS HF: 500 W RMS VHF: 300 W RMS maximum Recommended Processing Subsonic filter below 30 Hz, >18 dB per octave 4th order LR crossover at 250, 1700 and 6000 Hz via QSC DCM or QSControl.net Connectors Barrier strip screw terminals accept up to #10 AWG stranded wire Transducers Two 15" (381mm) high efficiency, extended bass woofer featuring a 3" copper voice coils MF: 10" high-effeciency, horn-loaded cone with pahse plug HF/VHF: coaxial neodymium compression driver with 3.5" (90 mm) HF diaphram and 1.75" (44 mm) VHF diaphram Enclosure Quasi B4 alignment, ported enclosure with fully flared ports, symmetrical port design, tuned to 36 Hz, constructed of MDF and heavily braced. Features vandal resistant woofer mounting bolts Tilt/Pan Bracket ±10° vertical tilt ±10° horizontal pan Dimensions (HWD) 36" x 30" x 20.3" (910 mm x 762 mm x 516 mm) 39" x 30" x 20" (990 mm x 762 mm x 508 mm) Weight - Net 172 lbs (78 kg) 84 lbs (38.5 kg) System Weight 256 lbs (116 kg) Baffle Cut-Out 76" x 32" 1) Maximum input power tested in accordance with IEC 268-5 recommendations, 50 Hz - 20 kHz band limiting, 6 dB signal crest factor. THX is a trademark of THX Ltd.

1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: 714/754-6174 SC-324 Spec Sheet - 04/23/07 Top Side 21.7" 551 mm 20.3" 515 mm 30" 762 mm Front 75" 1900 mm 18.9" 480 mm 39" 990 mm 36" 910 mm 4" 102 mm