QSC Audio SC-413H - Manual

Developed specifically for the unique requirements
of professional motion picture playback, the SC-413H
extends QSC’s commitment to the cinema market. As
a member of the DCS Digital Cinema Speaker Series,
the SC-413H is a 3-way, selectable bi or tri-amplified
screen channel loudspeaker system comprised of two
main units—the MH-1075 mid-high frequency system
and the LF-4115 low-frequency system.
The MH-1075 mid-high system features a high
output, horn loaded 10" midrange cone driver and a
3" (63 mm) 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-4115 single 15" (381 mm) low-frequency
enclosure is designed specifically to address the
extended low-frequency response required for cinema
applications. The LF-4115 covers the frequency range
from 35 Hz to 250 Hz.
The SC-413H 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-4115 enclosure.
SC-413H
Cinema Loudspeaker System
Specifications SC-413H
Nominal Coverage 90° horizontal x +20 to -30° vertical
Frequency Range 33 – 16 kHz (-6 dB)
Crossover Frequency 250 and 1700 Hz, 24 dB per octave
LF-4115 MH-1075
Impedance 4Ω 8Ω
Sensitivity 1 watt /1 meter, 93.5 dB Bi-amp Tri-amp
half space 105 dB MF 105 dB HF 107.5 dB
Maximum Input Power 1
8 hours of 6 db crest factor 400 W RMS 250 W RMS 2 275 W RMS 80 W RMS
IEC 268 noise spectrum
2 hours of 6 db crest factor 500 W RMS 350 W RMS
pink noise, 50 Hz – 20 kHz,
AES method
Recommended Amplifier Power 800 W RMS maximum 800 W RMS maximum
Recommended Processing Subsonic filter below 30 Hz, 4th order LR crossover at 200 and 1700
> 18 dB per octave Hz via QSC DCM or QSControl.net™
Connectors Barrier strip screw terminals Barrier strip screw terminals
accept up to #10 AWG accept up to #10 AWG stranded wire
stranded wire
Transducers One 15" (381mm) high efficiency, 10" high efficiency mid range,
extended bass woofer featuring a 1.5" (38mm) exit, 3" titanium
4" copper voice coil
diaphragm compression driver
Enclosure Quasi B4 alignment, ported Tilt/Pan Bracket
enclosure with fully flared ports, ±10° vertical tilt
symmetrical port design, tuned to ±10° horizontal pan
36 Hz, constructed of MDF and
heavily braced. Features vandal
resistant woofer mounting bolts
Dimensions (HWD) 18.5" x 30" x 20.3" 39" x 30" x 20"
(470 mm x 762 mm x 516 mm) (990 mm x 762 mm x 508 mm)
Weight – Net 83 lb (38 kg) 85 lb (39 kg)
System Weight 168 lb (77 kg)
Baffle Cut-Out 58.75" 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.
Features
• 3-way selectable, bi or tri-amplified screen channel system
• MH-1075 provides increased high-frequency output
• LF-4115 is constructed of MDF and is heavily braced
• Low-distortion waveguides provide highly articulate dialogue
• Shallow depth (20") facilitates installation
passive
mid-high