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SC-423H / SC-423H-8 Cinema Loudspeaker System
High Power 3-way Screen Channel System
Developed specifically for the unique requirements of professional motion
picture playback, the SC-423 extends QSC's commitment to the cinema
market. As a member of the DCS Digital Cinema Speaker Series, the SC-423
is a three-way, selectable bi or tri-amplified screen channel loudspeaker
system comprised of two main units - the MH-1063 mid-high frequency system
and the LF-4215 low-frequency system.
The MH-1063 Mid-High system features a high output, horn loaded 10"
midrange cone driver and a 2.5" (63mm) titanium diaphragm compression
driver mounted to an adjustable pan and tilt bracket. The MH-1063 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-1063 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-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 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 LF-4215-8 is the 8 ohm version of the LF-4215.
The SC-423 is designed for ease of installation. The MH-1063 components
come pre-assembled to reduce field assembly time. Three bolts are all that
are required to secure the MH-1063 to the top of the LF-4215 enclosure.
FEATURES
- Three-way selectable, bi or tri- amplified screen channel system
- MH-1063 provides 90° horizontal by+20° to -30° vertical coverage
- LF-4215 is constructed of MDF and is heavily braced
- Low-distortion waveguides provide highly articulate dialogue
- Shallow depth (20") facilitates installation
- THX Approved
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DCS SERIES
DOCUMENTS
SC-423H Specifications (PDF 466K)
HI-RES IMAGE
SC-423H
CAD DRAWINGS
MH-1075 (DXF, zipped 271K)
LF-4215 (DXF, zipped 36K)
RELATED PRODUCTS
DCA Series 2-Channel Amplifiers
DCA Series 4-Channel Amplifiers
DCM Digital Cinema Monitor
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SPECIFICATIONS |
SC-423H |
| 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-4215 |
MH-1075 |
| Impedance |
4 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 |
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Maximum Input Power1
(8 hours of 6db crest factor IEC 268 noise spectrum)
(2 hours of 6db crest factor pinknoise, 50 Hz - 20 kHz, AES method)
Recommended Amplifier Power |
800 watts RMS
1000 watts RMS
1600 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 |
Two 15" (381mm) high efficiency, extended bass woofers featuring 4" copper voice coils
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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
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Tilt/Pan Bracket
±10° vertical tilt
±10° horizontal pan |
| Dimensions |
30" wide x 36" high x 20.3" deep
(762mm x 910mm x 516mm)
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30" wide x 39" high x 20" deep
(762mm x 990mm x 508mm) |
| Net Weight |
172 lbs (78 kg) |
85 lbs (39 kg) |
| System Weight |
257 lbs (117 kg) |
| Baffle Cut-Out |
76" x 32" |
SPECIFICATIONS |
SC-423H-8 |
| 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-4215-8 |
MH-1075 |
| Impedance |
8 ohms |
8 ohms |
Sensitivity 1 watt/1 meter,
half space |
99.5 dB at 2.83 Vrms |
Bi-amp
105 dB |
Tri-amp
MF 105 dB |
HF 107.5 dB |
|
Maximum Input Power1
(8 hours of 6db crest factor IEC 268 noise spectrum)
(2 hours of 6db crest factor pinknoise, 50 Hz - 20 kHz, AES method)
Recommended Amplifier Power |
800 watts RMS
1000 watts RMS
1600 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 |
Two 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 36" high x 20.3" deep
(762mm x 910mm x 516mm)
|
30" wide x 39" high x 20" deep
(762mm x 990mm x 508mm) |
| Net Weight |
172 lbs (78 kg) |
85 lbs (39 kg) |
| System Weight |
257 lbs (117 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.
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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