QSC SC-444 – Tri/Quad-Amp 4-Way 4x15-Inch Cinema Screen Channel Loudspeaker

Product Overview

The QSC SC-444 is a high-power four-way, selectable tri- or quad-amplified behind-screen cinema loudspeaker from the DCS Digital Cinema Series for professional motion-picture playback in large auditoriums. It combines the MHV-1090 mid/high/very-high system with dual LF-4215 low-frequency enclosures for a 4x15-inch low-frequency complement.

THX-approved and engineered for articulate dialogue and high output, the SC-444 brings reference cinema sound to large premium rooms.

Product Description

The MHV-1090 mid/high/very-high system features a high-output, horn-loaded 10-inch midrange cone driver and a coaxial neodymium high-frequency/very-high-frequency compression driver, with a driver-protection network and a passive crossover for tri-amp operation. The protection circuitry prevents low-frequency signals from damaging the HF and VHF driver.

The high-power 10-inch cone driver operates as low as 250 Hz, and advanced phase-plug coupling permits a crossover point up to 1800 Hz to the high-frequency horn, so most of the dialogue range is reproduced by a single element for unmatched intelligibility. The low-mass HF/VHF diaphragm delivers exceptional dynamic range, extended high-frequency response, and lower distortion. The dual LF-4215 enclosures are heavily braced MDF with single woofer chambers.

Low-distortion waveguides deliver articulate dialogue, and a shallow 20-inch depth facilitates installation. THX-approved for professional cinema, the SC-444 integrates with QSC cinema subwoofers, surrounds, amplifiers, and processors. For smaller rooms, see the QSC SC-424.

Key Features

• Four-way tri/quad-amplified system — Operates in selectable tri- or quad-amplified configurations for maximum control and headroom.
• Coaxial neodymium HF/VHF driver — A low-mass HF/VHF diaphragm provides exceptional dynamic range, extended high-frequency response, and lower distortion.
• Single-element dialogue range — The horn-loaded 10-inch midrange operates from about 250 Hz with a crossover up to 1800 Hz, reproducing most of the dialogue range from one element.
• 4x15-inch low-frequency complement — Dual LF-4215 enclosures with single woofer chambers deliver high low-frequency output for large rooms.
• Heavily braced MDF enclosures — Provide solid, low-resonance low-frequency reproduction.
• Low-distortion 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-444 use?
It uses two LF-4215 enclosures for a 4x15-inch low-frequency system, paired with the MHV-1090 mid/high/very-high system.

Can the SC-444 be tri- or quad-amplified?
Yes. It supports selectable tri- or quad-amplified operation; quad-amp mode drives the LF, MF, HF, and VHF sections separately via an external cinema processor.

Is the SC-444 THX approved?
Yes. The SC-444 is THX-approved for professional cinema applications.

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.