DCS Series

Digital Cinema Speakers

SC-312 Cinema 2-way Screen Channel System

Developed specifically for the unique requirements of professional motion picture playback, the SC-312 extends QSC's commitment to the cinema market. As a member of the DCS Digital Cinema Speaker Series, the SC-312 is a two-way, bi-amplified screen channel loudspeaker system comprised of two main units - the HF-63 high-frequency system and the LF-3115 low-frequency system.

The HF-63 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-63 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-3115 15" (381mm) low-frequency enclosure is designed specifically to address the extended low-frequency response required for cinema applications. The LF-3115 covers the frequency range from 35 Hz to 1000 Hz, depending upon the high-frequency system requirements.

The SC-312 is designed for ease of installation. The HF-63 components come pre-assembled to reduce field assembly time. Three bolts are all that are required to secure the HF-63 to the top of the LF-3115 enclosure.

FEATURES

• Two-way, bi-amplified screen channel system
• SC-312 provides 90° horizontal by +20° to -30° vertical coverage
• Low-distortion waveguide provides highly articulate dialogue
• Shallow depth (20") facilitates installation

SPECIFICATIONS	SC-312
Nominal Coverage	90° horizontal by +20 to -30° vertical
Frequency Range (-6 dB)	33 Hz -16 kHz
Crossover Frequency	1000 Hz, 24 dB per octave
	LF-3115	HF-63
Impedance	8 ohms	8 ohms
Sensitivity 1 watt/1 meter, half space	95.5 dB	107.5 dB
Maximum Input Power 1 (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	300 watts RMS 400 watts RMS 600 watts RMS maximum	40 watts RMS 60 watts RMS 100 watts RMS maximum
Recommended Processing	Subsonic filter below 30 Hz, >18 dB per octave	4th order LR crossover at 1000 Hz
Connectors	Barrier strip screw terminals accept up to #10 AWG stranded wire	Barrier strip screw terminals accept up to #10 AWG stranded wire
Transducers	One 15" (381mm) high efficiency, extended bass woofer featuring a 3" copper voice coil	1.5" (38mm) exit, 2.5" 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 18.5" high x 20.3" deep (762mm x 470mm x 516mm)	30" wide x 16" high x 20" deep (762mm x 406mm x 508mm)
Net Weight	83 lbs/38 kg	40 lbs/18.4 kg
System Weight	123 lbs/56.4 kg
Baffle Cut-Out	35.5" 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.

Specifications subject to change without notice.