The Q-SYS SC-423C is a high-performance, 3-way screen channel loudspeaker system designed specifically for professional cinema applications. As part of the DCS Digital Cinema Speaker Series, it offers selectable bi- or tri-amplification modes to suit various audio configurations. The system comprises two main components: the MH-1075C mid-high frequency system and the LF-4215 low-frequency enclosure. This combination delivers exceptional audio clarity and coverage, ensuring an immersive cinematic experience.

The Key Features of the Q-SYS SC-423C:

• Three-Way Selectable Amplification: Offers flexibility with bi- or tri-amplified operation to match specific audio system requirements.
• Optimized Coverage: The MH-1075C provides 90° horizontal and +20° to -30° vertical coverage, ensuring consistent sound distribution across the audience area.
• Robust Low-Frequency Performance: The LF-4215 enclosure houses two 15-inch high-efficiency woofers with 4-inch copper voice coils, delivering deep and impactful bass.
• Articulate Dialogue Reproduction: Low-distortion waveguides in the mid-high system ensure clear and precise dialogue, enhancing the overall viewing experience.
• Space-Efficient Design: With a shallow depth of 20 inches, the SC-423C facilitates easy installation in various theater configurations.

The Detailed Specifications for the Q-SYS SC-423C:

Frequency Range: 32 Hz to 16 kHz (-6 dB)

Nominal Coverage: 90° horizontal x +20° to -30° vertical

Crossover Frequencies: 250 Hz and 1700 Hz, 24 dB per octave

Impedance:

• LF-4215: 4 ohms
• MH-1075C: 8 ohms

Sensitivity (1 watt/1 meter, half space):

• LF-4215: 99.5 dB
• MH-1075C (Bi-amp): 105 dB
• MH-1075C (Tri-amp MF): 105 dB
• MH-1075C (Tri-amp HF): 107.5 dB

Maximum Input Power:

• LF-4215: 800 watts continuous
• MH-1075C (Passive Mid-High): 350 watts continuous
• MH-1075C (MF): 275 watts continuous
• MH-1075C (HF): 75 watts continuous

Recommended Amplifier Power:

• LF-4215: 1600 watts continuous maximum
• MH-1075C: 800 watts continuous maximum

Transducers:

• LF-4215: Two 15-inch high-efficiency, extended bass woofers with 4-inch copper voice coils
• MH-1075C: 10-inch high-efficiency mid-range driver and a 1.5-inch exit, 3-inch titanium diaphragm compression driver

Enclosure:

• LF-4215: Quasi B4 alignment, ported enclosure with fully flared ports, constructed of MDF and heavily braced; features vandal-resistant woofer mounting bolts
• MH-1075C: Includes a tilt/pan bracket with ±10° vertical tilt and ±10° horizontal pan adjustments

Dimensions:

• LF-4215 (HWD): 30 x 36 x 20.3 inches (762 x 914 x 516 mm)
• MH-1075C (HWD): 30 x 39 x 20 inches (762 x 991 x 508 mm)

Weight:

• LF-4215: 172 lb (78 kg)
• MH-1075C: 85 lb (39 kg)
• Total System Weight: 257 lb (117 kg)

Connectors: Barrier strip screw terminals accepting up to #10 AWG stranded wire

Recommended Processing: Subsonic filter below 30 Hz, >18 dB per octave; 4th order Linkwitz-Riley crossover at 250 Hz and 1700 Hz via QSC processing