SC-322X
Cinema Loudspeaker System
Features
• Passive, 2-way, screen channel system
• HF-63X2 provides 90° horizontal by +15° to -35° vertical coverage
• LF-3215 is constructed of MDF and features single woofer chambers
• Low-distortion waveguide provides highly articulate dialogue
• Shallow depth (20") facilitates installation
Developed specifically for the unique requirements
of professional motion picture playback, the SC-322X
extends QSC’s commitment to the cinema market.
As a member of the DCS Digital Cinema Speaker
Series, the SC-322X is a passive, 2-way screen channel
loudspeaker system comprised of two main units—the
HF-63X2 high-frequency system and the LF-3215 low-
frequency system.
Specifications
Nominal Coverage
Frequency Range
Impedance
SC-322X
90° horizontal x +15 to -35° vertical
32 Hz – 16 kHz (-6 dB)
4Ω
Sensitivity 1 watt/1 meter,
half space
97.5 dB
Maximum Input Power1
The HF-63X2 high-frequency system features a 2.5"
(63mm) titanium diaphragm compression driver
mounted on a custom designed high-frequency
cinema horn with an adjustable pan and tilt bracket.
The HF-63X2 includes a driver protection and
equalization network. DC blocking capacitors protect
against DC or low-frequency signals that would
likely destroy an unprotected driver. Power limiter
circuitry protects the driver from overpowering and
a response correction filter smoothes the frequency
response of the horn/driver combination. The driver
and equalization network provides for more reliable
operation, ensuring the show will go on. The LF-3215
dual 15" (381mm) low-frequency enclosure is
designed specifically to address the extended low-
frequency response required for cinema applications.
2 hours of 6 db crest factor
pink noise, 50 Hz – 20 kHz,
AES method
300 W RMS
Recommended Amplifier Power 600 W RMS maximum
Recommended Processing
Connectors
Subsonic filter below 30 Hz, > 18 dB per octave
LF-3215
HF-63X2
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 woofer featuring
3" copper voice coils
1.5" (38mm) exit, 2.5" titanium
diaphragm compression driver
Enclosure
Quasi B4 alignment, ported
Tilt/Pan Bracket
10° vertical tilt
10° horizontal pan
enclosure with fully flared ports,
symmetrical port design, tuned to
36 Hz, constructed of MDF and
heavily braced. Features vandal
resistant woofer mounting bolts
The LF-3215 covers the frequency range from 35 Hz to
1000 Hz, depending upon the high-frequency system
requirements. 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.
Dimensions (HWD)
36" x 30" x 20.3"
(910 mm x 762 mm x 516 mm)
16" x 30" x 20"
(406 mm x 762 mm x 508 mm)
Weight – Net
System Weight
Baffle Cut-Out
172 lb (78 kg)
212 lb (96.4 kg)
53" x 32"
40 lb (18.4 kg)
The SC-322X is designed for ease of installation.
The HF-63X2 components come pre-assembled to
reduce field assembly time. Three bolts are all that
are required to secure the HF-63X2 to the top of the
LF-3215 enclosure.
1) Maximum input power tested in accordance with IEC 268-5 recommendations, 50 Hz – 20 kHz band limiting, 6 dB signal crest factor.
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