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QSC Audio HF-63X2 User Manual

Sc-322x, Cinema loudspeaker system

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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.

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" (381 mm) low-frequency enclosure is
designed specifically to address the extended low-
frequency response required for cinema applications.

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.

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.

SC-322X

Cinema Loudspeaker System

Specifications

SC-322X

Nominal Coverage

90° horizontal x +15 to -35° vertical

Frequency Range

32 Hz – 16 kHz (-6 dB)

Impedance

Sensitivity 1 watt /1 meter,

97.5 dB

half space

Maximum Input Power

1

2 hours of 6 db crest factor

300 W RMS

pink noise, 50 Hz – 20 kHz,

AES method

Recommended Amplifier Power 600 W RMS maximum

Recommended Processing

Subsonic filter below 30 Hz, > 18 dB per octave

LF-3215

HF-63X2

Connectors

Barrier strip screw terminals

Barrier strip screw terminals

accept up to #10 AWG

accept up to #10 AWG

stranded wire

stranded wire

Transducers

Two 15" (381mm) high efficiency,

1.5" (38mm) exit, 2.5" titanium

extended bass woofer featuring

diaphragm compression driver

3" copper voice coils

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)

36" x 30" x 20.3"

16" x 30" x 20"

(910 mm x 762 mm x 516 mm)

(406 mm x 762 mm x 508 mm)

Weight – Net

172 lb (78 kg)

40 lb (18.4 kg)

System Weight

212 lb (96.4 kg)

Baffle Cut-Out

53" 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.

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