Q-SYS SC-412C Bi-Amp 2-Way 1x15-inch Cinema Loudspeaker System with HF-75C and LF-4115

Developed specifically for the unique requirements of professional motion picture playback, the SC-412C extends QSC’s commitment to the cinema market. As a member of the DCS Digital Cinema Speaker Series, the SC-412C is a 2-way, bi-amplified screen channel loudspeaker system comprised of two main units—the HF-75C high-frequency system and the LF-4115 low-frequency system.

The HF-75C high-frequency system features a 3” large format (75mm) titanium diaphragm compression driver mounted on a custom-designed high-frequency cinema horn with an adjustable pan and tilt bracket. The HF-75C includes a driver protection and equalization network. DC blocking capacitors protect against DC or low-frequency signals that could potentially 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 ensures more reliable operation, keeping the show going.

The LF-4115 15” (381mm) low-frequency enclosure is designed specifically to address the extended low-frequency response required for cinema applications. The LF-4115 covers the frequency range from 32 Hz to 1000 Hz, depending upon the high-frequency system requirements.

The SC-412C is designed for ease of installation. The HF-75C components come pre-assembled to reduce field assembly time. Three bolts are all that are required to secure the HF-75C to the top of the LF-4115 enclosure.

Features:

• Two-way, bi-amplified screen channel system
• SC-412C provides 90° horizontal by +20° to -30° vertical coverage
• Low-distortion waveguide provides highly articulate dialogue
• Shallow depth (20-inch) facilitates installation

Specifications:

• SC-412C:
  • Nominal Coverage: 90° horizontal by +20 to -30° vertical
  • Frequency Range (-6 dB): 33 Hz–16 kHz
  • Crossover Frequency: 700 Hz, 24 dB per octave
• LF-4115:
  • Impedance: 4 ohms
  • Sensitivity 1 watt/1 meter, half space: 96.5 dB
  • Maximum Input Power:
    • (100 hours of 6 dB crest factor IEC 268 noise spectrum): 400 watts continuous
    • (2 hours of 6 dB crest factor pinknoise, 50 Hz–20 kHz, AES method): 500 watts continuous
    • Recommended Amplifier Power: 800 watts continuous maximum
  • Recommended Processing: Subsonic filter below 30 Hz, > 18 dB per octave
  • Connectors: Barrier strip screw terminals accept up to #10 AWG stranded wire
  • Transducers: Two 15" (381mm) high efficiency, extended bass woofers featuring 4" copper voice coils
  • 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
  • Dimensions (HWD) inches: 30 × 18.5 × 20.3
  • Dimensions (HWD) mm: 470 x 762 x 516
  • Net Weight: 83 lb (38 kg)
  • System Weight: 123 lb (56.4 kg)
  • Baffle Cut-Out: 35.5-inch × 32-inch
• HF-75C:
  • Impedance: 8 ohms
  • Sensitivity 1 watt/1 meter, half space: 108 dB
  • Maximum Input Power:
    • (100 hours of 6 dB crest factor IEC 268 noise spectrum): 60 watts continuous
    • (2 hours of 6 dB crest factor pinknoise, 50 Hz–20 kHz, AES method): 80 watts continuous
    • Recommended Amplifier Power: 100 watts continuous maximum
  • Recommended Processing: 4th order LR crossover at 250 and 1700 Hz via QSC processor
  • Connectors: Barrier strip screw terminals accept up to #10 AWG stranded wire
  • Transducers: 10- high efficiency mid range, 1.5" (38mm) exit, 3" titanium diaphragm compression driver
  • Enclosure:
    • Tilt/Pan Bracket
    • ±10° vertical tilt
    • ±10° horizontal pan
  • Dimensions (HWD) inches: 30 × 16 × 20
  • Dimensions (HWD) mm: 406 x 762 x 508
  • Net Weight: 40 lb (18.4 kg)