QSC SC-443C – Bi/Tri-Amp 3-Way 4x15-Inch Cinema Screen Channel Loudspeaker

Product Overview

The QSC SC-443C is a high-power three-way, selectable bi- or tri-amplified screen channel loudspeaker from the DCS Digital Cinema Series for professional motion-picture playback. It comprises the MH-1075 mid-high system and dual LF-4215 low-frequency systems for a 4x15-inch low-frequency complement.

THX-approved and engineered for large cinema auditoriums, the SC-443C delivers high output and articulate dialogue from a shallow behind-screen footprint.

Product Description

The MH-1075 mid-high system features a high-output, horn-loaded 10-inch midrange cone driver and a 3-inch (75 mm) titanium-diaphragm compression driver on an adjustable pan-and-tilt bracket, with a driver-protection network, passive crossover for bi-amp operation, and power-limiter circuitry.

The 10-inch cone driver operates as low as 250 Hz, with advanced phase-plug coupling permitting a crossover up to 1800 Hz to the HF horn, reproducing most of the dialogue range from a single element for unmatched intelligibility. The dual LF-4215 enclosures are MDF with single woofer chambers, providing 4x15-inch low-frequency output.

Low-distortion waveguides deliver articulate dialogue, and a shallow 20-inch depth facilitates installation. THX-approved for professional cinema, the SC-443C integrates with QSC cinema subwoofers, surrounds, amplifiers, and processors.

Key Features

• Three-way selectable bi- or tri-amp — Operates in selectable bi-amplified or tri-amplified configurations for precise system control.
• MH-1075 high-frequency system and dual LF-4215 low-frequency systems components — Built from the MH-1075 high-frequency system and dual LF-4215 low-frequency systems for proven cinema performance.
• Extended-coverage mid-high — The mid-high system provides 90° horizontal by +20° to -30° vertical coverage, with a 3 in (75 mm) titanium-diaphragm compression driver and 10-inch midrange for articulate dialogue.
• Single-element dialogue range — A high-power 10-inch cone driver operates as low as 250 Hz with a crossover up to 1800 Hz, so most of the dialogue range is reproduced by a single element for unmatched intelligibility.
• Heavily braced LF enclosure — The 4x15 in (dual LF-4215) low-frequency enclosure is constructed of MDF and heavily braced for solid bass.
• Low-distortion waveguides — Waveguides provide highly articulate dialogue for intelligible cinema playback.
• Shallow 20-inch depth — Reduces required behind-screen clearance to facilitate installation.
• THX approved — THX-approved for professional cinema applications.

Typical Applications

• Auditorium
• Broadcast studio
• Multi-purpose room

Technical Specifications

Frequently Asked Questions

What low-frequency complement does the SC-443C use?
It uses dual LF-4215 enclosures for a 4x15-inch low-frequency system, paired with the MH-1075 mid-high system.

Is the SC-443C THX approved?
Yes. The SC-443C is THX-approved for professional cinema applications.

Can it be tri-amplified?
Yes. It supports selectable bi- or tri-amplified operation for precise control via an external cinema processor.

What warranty and support come with this loudspeaker?
QSC installed loudspeakers are covered under QSC's standard limited warranty; refer to QSC's published warranty terms for the current coverage period applicable to this model. Creation Networks provides pre- and post-sale support for system design and integration questions.