QSC Audio Speaker System HF 63X2 User Guide

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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