SC-312X

Cinema Loudspeaker System

Features

Passive, two-way, screen channel system

SC-312X provides 90° horizontal by +15° to -35° vertical coverage

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-312X extends QSC’s commitment to the cinema market. As a member of the DCS Digital Cinema Speaker Series, the SC-312X is a passive, two-way, screen channel loudspeaker system comprised of two main units—the HF-63X1 high frequency system and the LF-3115 low- frequency system.

The HF-63X1 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-63X1 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-312X is designed for ease of installation. The HF-63X1 components come pre-assembled to reduce field assembly time. Three bolts are all that are required to secure the HF-63X1 to the top of the LF-3115 enclosure.

Specifications

SC-312X

 

 

 

 

Nominal Coverage

90° horizontal x +15 to -35° vertical

 

 

 

 

Frequency Range

33 Hz - 16 kHz (-6 dB)

 

 

 

 

Impedance

8Ω

 

 

 

 

Sensitivity 1 watt /1 meter,

95 dB

 

half space

 

 

 

 

 

Maximum Input Power1

 

 

2 hours of 6 db crest factor

150 W RMS

 

pinknoise, 50 Hz - 20 kHz,

 

 

AES method

 

 

Recommended Amplifier Power

300 W RMS maximum

 

 

 

Recommended Processing

Subsonic filter below 30 Hz, > 18 dB per octave

 

 

 

 

LF-3115

HF-63X1

 

 

 

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,

1.5" (38mm) exit, 2.5" titanium

 

extended bass woofer featuring a

diaphragm compression driver

 

3" copper voice coil

 

 

 

 

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"

16" x 30" x 20"

 

(470 mm x 762 mm x 516 mm)

(406 mm x 762 mm x 508 mm)

 

 

 

Weight - Net

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.

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QSC Audio SC-312X specifications Features, Specifications

SC-312X specifications

The QSC Audio SC-312X is an advanced two-way loudspeaker designed to meet the demands of various audio applications, from live sound reinforcement to installations in sports venues, auditoriums, and houses of worship. This versatile loudspeaker is known for its exceptional sound quality, durability, and user-friendly features that make it a popular choice among audio professionals.

One of the standout features of the SC-312X is its powerful coaxial design. Utilizing a 12-inch low-frequency driver and a 1.4-inch exit high-frequency driver integrated into a single point source, this configuration allows for a more uniform dispersion of sound across a wide listening area. This results in improved clarity and reduced phase cancellations, ensuring that the audio is consistent regardless of the listener's position in relation to the speaker.

The SC-312X incorporates QSC's advanced DMT (Directivity Matched Transition) technology, which is designed to provide a smooth frequency response across the entire coverage pattern. This technology enables the loudspeaker to maintain a consistent tonal balance both on and off-axis, making it ideal for applications where audience coverage is critical.

In terms of construction, the SC-312X is built to withstand the rigors of professional use. Its cabinet is made from rugged plywood, finished with a durable coating that helps protect against wear and tear. Additionally, the front grille is made from perforated steel, providing extra protection for the drivers while allowing for optimal sound output.

Another important characteristic of the SC-312X is its versatility in rigging and mounting options. The loudspeaker comes equipped with integral fly points, which simplifies the process of suspension in various configurations. It also features a stand-mountable design, making it suitable for both permanent installations and portable setups.

The speaker’s power handling capability is impressive, accommodating a wide range of amplifiers and making it suitable for large venue applications. The SC-312X delivers a powerful output without sacrificing audio fidelity, ensuring that every nuance of the performance is captured and conveyed to the audience.

In summary, the QSC Audio SC-312X is an exceptional loudspeaker that combines innovative technology with robust construction to deliver unparalleled performance in any professional audio setting. Its coaxial design, advanced DMT technology, rugged build quality, and flexible mounting options make it a reliable choice for audio engineers and sound professionals looking to achieve the highest standards in sound reproduction.