User manual PIONEER S-Q250

[. . . ] As a member of the DCS Digital Cinema Speaker Series, the S-Q250 is a 4-way, selectable tri or quad-amplified screen channel loudspeaker system comprised of two main units ­ the MHV-1090 midhigh-very high-frequency system and the LF-4215 low-frequency system. [. . . ] 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 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-4215 enclosure. Cinema Loudspeaker System S-Q250 Specifications Nominal Coverage Frequency Range (-6 dB) Active Crossover Frequencies S-Q250 90° horizontal x +20 to -30° vertical 33 ­ 20 kHz 250, 1700 and 6000 Hz, 24 dB per octave LF-4215 MHV-1090 MF: 8 HF: 8 VHF: 8 Tri-amp MF:105 dB HF/VHF: 110 dB Quad-amp MF: 105 dB HF: 110 dB VHF: 110 dB Impedance Sensitivity 1 watt /1 meter, half space 4 99. 5 dB 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 Recommended Amplifier Power Recommended Processing Connectors Transducers 800 W RMS MF: 275 W RMS HF/VHF: 230 W RMS MF: 275 W RMS HF: 150 W RMS VHF: 80 W RMS 1000 W RMS MF: 800 W RMS HF/VHF: 500 W RMS maximum MF: 800 W RMS HF: 500 W RMS VHF: 300 W RMS maximum 4th order LR crossover at 250, 1700 and 6000 Hz via QSC DCM or QSControl. netTM 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 Tilt/Pan Bracket ±10° vertical tilt ±10° horizontal pan 1600 W RMS maximum Subsonic filter below 30 Hz, >18 dB per octave Two 15" (381mm) high efficiency, extended bass woofer featuring a 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. Features vandal resistant woofer mounting bolts 36" x 30" x 20. 3" (910 mm x 762 mm x 516 mm) 172 lb (78 kg) Barrier strip screw terminals accept up to #10 AWG stranded wire Enclosure Dimensions (HWD) Weight ­ Net System Weight Baffle Cut-Out 39" x 30" x 20" (990 mm x 762 mm x 508 mm) 84 lb (38. 5 kg) 256 lb (116 kg) 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. S-Q250 Top Dimensions 21. 7" 551 mm 20. 3" 515 mm 30" 762 mm 39" 990 mm 75" 1900 mm Side 4" 102 mm 36" 910 mm 18. 9" 480 mm Front Specifications subject to change without notice. QSC, the QSC logo and QSControl. net are registered trademarks of QSC Audio Products, LLC in the U. S. Patent and Trademark office and other countries. [. . . ] All other trademarks are the property of their respective owners. [. . . ]