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DCS Series
DCS SC-433 THX Approved

SC-433 Cinema Loudspeaker System


Developed specifically for the unique requirements of professional motion picture playback, the SC-433 extends QSC's commitment to the cinema market. As a member of the DCS Digital Cinema Speaker Series, the SC-433 is a three-way, selectable bi or tri-amplified screen channel loudspeaker system comprised of two main units - the MH-1075 high-frequency system and the LF-4315 low-frequency system.

The MH-1075 Mid-High system features a high output, horn loaded 10" midrange cone driver and a 3" (75mm) titanium diaphragm compression driver mounted to an adjustable pan and tilt bracket. The MH-1075 includes a driver protection network and a passive crossover for bi-amp operation. Power limiter circuitry protects the high-frequency driver from overpowering. The MH-1075 provides extended frequency coverage for the critical midrange band. 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 LF-4315 triple 15" (381mm) low-frequency enclosure is designed specifically to address the extended low-frequency response required for cinema applications. The LF-4315 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-433 is designed for ease of installation. The MH-1075 components come pre-assembled to reduce field assembly time. Three bolts are all that are required to secure the MH-1075 to the top of the LF-4315 enclosure.

FEATURES

  • Three-way selectable, bi or tri- amplified screen channel system
  • MH-1075 provides 90° horizontal by +20° to -30° vertical coverage
  • LF-4315 is constructed of MDF and features single woofer chambers
  • Low-distortion waveguides provide highly articulate dialogue
  • Shallow depth (20") facilitates installation
  • THX Approved



DCS SERIES


DOCUMENTS

SC-433 Specifications (PDF 501K)
SC-433 User Manual (PDF 2.7MB)

HI-RES IMAGES

SC-433

CAD DRAWINGS

SC-433 (DXF, zipped 285K)
MH-1075 (DXF, zipped 271K)
LF-3115 (DXF, zipped 31K)

RELATED PRODUCTS

DCA Series 2-Channel Amplifiers
DCA Series 4-Channel Amplifiers
DCM Digital Cinema Monitor


RoHS Compliant
RoHS Compliant


SPECIFICATIONS SC-433
Nominal Coverage 90° horizontal by +20 to -30° vertical
Frequency Range (-6 dB) 32 Hz -16 kHz
Crossover Frequency
 250 & 1700 Hz, 24 dB per octave
LF-4315 MH-1075
Impedance 5.5 ohms 8 ohms
Sensitivity 1 watt/1 meter, half space 99.5 dB
Bi-amp
105 dB		 Tri-amp
MF 105 dB
HF 107.5 dB
Maximum Input Power1 
(8 hours of 6 dB crest factor IEC 268 noise spectrum)

(2 hours of 6 dB crest factor pinknoise, 50 Hz - 20 kHz, AES method)
Recommended Amplifier Power
1200 watts RMS


1500 watts RMS

2400 watts RMS maximum
250 W RMS
passive
mid-high2 		275 W RMS 80 W RMS
350 watts RMS

800 watts RMS maximum
Recommended Processing Subsonic filter below 30 Hz, >18 dB per octave 4th order LR crossover at 250 & 1700 Hz via QSC DCM or QSControl.net
Connectors Barrier strip screw terminals accept up to #10 AWG stranded wire
 Barrier strip screw terminals accept up to #10 AWG stranded wire
Transducers Three 15" (381mm) high efficiency, extended bass woofers featuring 4" copper voice coils
 10" high efficiency mid range, 1.5"; (38mm) exit, 3" titanium diaphragm compression driver
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 30" wide x 53" high x 20.3" deep
(762mm x 1344mm x 516mm)
 30" wide x 39" high x 20" deep
(762mm x 990mm x 508mm)
Net Weight 260 lbs (118 kg) 85 lbs (39 kg)
System Weight 345 lbs (157 kg)
Baffle Cut-Out 93" 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.
2 Maximum input power tested in accordance with IEC 268-5 recommendations, 200 Hz - 2 kHz band limiting, 6 dB signal crest factor.

Specifications subject to change without notice.


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