Audio & Video

The QSC RMX4050a is a powerful two-channel professional amplifier from the RMXa Series, delivering large amounts of clean power while still running on a standard 15-amp, 120V circuit. It is a popular choice for high-output mains and subwoofer systems in touring and installed applications. The RMX4050a produces 850 watts per channel into 8 ohms, 1400 watts into 4 ohms, and up to 4000 watts bridged into a single 4-ohm load. QSC's road-proven design provides XLR and 1/4-inch balanced inputs,...

The QSC RMX5050a is the flagship of the RMXa Series, a two-channel professional power amplifier built to deliver maximum output for large-format subwoofer and main loudspeaker systems in touring and high-demand installed rigs. It produces 1100 watts per channel into 8 ohms, 2000 watts into 4 ohms, and up to 5000 watts bridged into a single 4-ohm load. QSC's road-proven engineering provides XLR and 1/4-inch balanced inputs, Speakon and binding-post outputs, defeatable clip limiters, and...

The QSC RMX850a is a two-channel professional power amplifier from the road-proven RMXa Series, aimed at working musicians, DJs, and small production companies who need reliable, affordable power. It comfortably drives main and monitor loudspeakers in bars, houses of worship, and portable PA rigs. Rated at 200 watts per channel into 8 ohms and 300 watts into 4 ohms, it delivers up to 830 watts bridged into a single 4-ohm load. The RMXa design combines XLR and 1/4-inch balanced inputs with...

The QSC RSB212 is a dual 12-inch reference-monitor subwoofer designed to partner with QSC RSC screen-channel loudspeakers in high-performance cinema and screening-room systems. It handles the low-frequency and effects content behind the screen, delivering the extended, high-output bass required for accurate reference monitoring. As a passive cinema subwoofer it is powered and processed by an external amplifier/DSP (such as a Q-SYS cinema amplifier), and it connects using QSC's cinema wiring...

The QSC RSC112 is a three-way, tri-amplified reference-monitor screen-channel loudspeaker for cinema and high-end screening-room systems. It combines a 12-inch low-frequency driver with a coaxial mid/high section, and is intended to be driven with separate amplifier channels (tri-amp) for precise control of each band—delivering the accuracy and headroom needed for reference monitoring behind the screen. It is a passive multi-way enclosure requiring external QSC cinema amplification/DSP and...

The QSC SB-1180 is a compact single-18-inch cinema subwoofer for reproducing low-frequency effects (LFE) and screen-channel bass in auditoriums where space is limited. Part of QSC's SB-series cinema subwoofer range, it delivers solid, room-filling low end in a smaller cabinet than the dual-driver models, making it well suited to small and medium rooms. It is a passive loudspeaker driven by an external cinema amplifier/DSP (such as Q-SYS cinema amplification). This is a standalone subwoofer,...

The QSC SB-118F is a flyable single-18-inch cinema subwoofer designed for auditoriums that require suspended (flown) low-frequency reproduction. It features eight M10 suspension points so the cabinet can be safely rigged overhead, and uses a high-efficiency 18-inch 800-watt transducer for high-output LFE and screen-channel bass. Part of QSC's SB-series cinema subwoofers, it is a passive loudspeaker driven by external cinema amplification/DSP. This is a standalone subwoofer, not an...

The QSC SB-15121 is a premium 21-inch cinema subwoofer from QSC's DCS (Digital Cinema Sound) reference range, built for high-output, deep low-frequency reproduction in premium and large auditoriums. It uses a 1500-watt, 21-inch transducer to move large volumes of air for impactful LFE with low distortion. As a passive cinema subwoofer it is powered and processed by external QSC cinema amplification/DSP. This is a standalone subwoofer, not an accessory. (Note: this model has been listed as...

The QSC SB-2180 is a dual-18-inch cinema subwoofer engineered for high-output low-frequency effects (LFE) and screen-channel bass in auditoriums. It uses two 18-inch, 700-watt high-efficiency transducers with 4-inch copper voice coils, presenting a 4-ohm nominal load, and reproduces low frequencies from roughly 22 Hz. It is a passive loudspeaker driven by an external cinema amplifier/DSP such as QSC's Q-SYS cinema amplification. This is a standalone subwoofer, not an accessory.Key FeaturesDual...

The QSC SB-218F is a flyable dual-18-inch cinema subwoofer built for suspended high-output low-frequency reproduction in auditoriums. It provides eight M10 suspension points for overhead rigging and uses two 18-inch, 800-watt transducers (800 W / 1600 W continuous power rating) with 101 dB sensitivity for powerful LFE and screen-channel bass. As a passive cinema subwoofer it is powered and processed by external QSC cinema amplification/DSP. This is a standalone subwoofer, not an accessory.Key...

The QSC SB-7218 is a high-output dual-18-inch cinema subwoofer for demanding low-frequency effects (LFE) and screen-channel bass in large auditoriums. It uses two 18-inch, 700-watt high-efficiency transducers with 4-inch copper coils on Kapton formers, presents a 4-ohm nominal load, and offers 101 dB sensitivity with response from about 22 Hz. It is a passive loudspeaker driven by external QSC cinema amplification/DSP. This is a standalone subwoofer, not an accessory.Key FeaturesHigh-output...

The QSC SC-1120 is a 12-inch, two-way passive cinema screen-channel loudspeaker designed for small screening rooms, private cinemas, and other compact auditoriums. It pairs a 12-inch woofer with a high-frequency section behind a 90-degree axisymmetric horn for even coverage of the seating area, delivering clear dialogue and full-range sound behind the screen. Rated at 300 W (600 W maximum recommended amplifier power) into 8 ohms, it is a passive loudspeaker driven by external cinema...

The QSC SC-1150 is a 15-inch, two-way passive cinema screen-channel loudspeaker for small screening rooms, private cinemas, and compact auditoriums that want more low-frequency output than the 12-inch SC-1120. It combines a 15-inch woofer with a high-frequency section behind a 90-degree axisymmetric horn for even, wide coverage of the audience, delivering intelligible dialogue and robust full-range sound behind the screen. It is a passive loudspeaker driven by external cinema amplification/DSP...

The QSC SC-2150 is a three-way behind-the-screen (screen channel) loudspeaker system from QSC's Digital Cinema Sound (DCS) line, engineered to sit behind a perforated cinema screen and deliver dialogue, music and effects across a large auditorium. It can be run passively or bi-amplified, giving integrators flexibility when matching amplifier and processor resources.Key FeaturesThree-way screen channel design for full-range cinema reproductionDual 15-inch low-frequency woofers for high output...

The QSC SC-223X is a three-way behind-the-screen cinema loudspeaker system in QSC's Digital Cinema Sound (DCS) family. Designed to mount behind a perforated projection screen, it reproduces the front left/center/right channels for commercial auditoriums and can be driven passively or bi-amplified. The system is built around QSC's modular component drivers, pairing a dual-15-inch low-frequency section with a horn-loaded mid/high assembly.Key FeaturesThree-way screen channel loudspeaker for...

The QSC SC-413C is a THX-approved three-way behind-the-screen cinema loudspeaker from QSC's SC-400 series (Digital Cinema Sound). It is the single-woofer member of the family, intended for small to mid-size auditoriums where it mounts behind a perforated screen to carry the front channels. The design supports bi-amplified or tri-amplified operation for scalable amplifier and DSP deployment.Key FeaturesTHX-approved three-way screen channel loudspeakerSingle 15-inch low-frequency woofer (LF-4115...

The QSC SC-414 is a high-power, THX-approved four-way behind-the-screen cinema loudspeaker in QSC's SC-400 (Digital Cinema Sound) series. As the single-15 member of the four-way lineup, it adds a dedicated very-high-frequency section over the three-way models for extended top-end detail, making it suited to premium and immersive auditoriums. It can be run tri-amplified or quad-amplified.Key FeaturesTHX-approved four-way screen channel loudspeakerSingle 15-inch low-frequency woofer (LF-4115...

The QSC SC-423C is a THX-approved three-way behind-the-screen cinema loudspeaker in QSC's SC-400 (Digital Cinema Sound) series. Using a dual-15-inch low-frequency section, it delivers higher output and low-end headroom than the single-woofer SC-413C, making it well suited to mid-size and larger auditoriums. It mounts behind a perforated projection screen and can be bi-amplified or tri-amplified.Key FeaturesTHX-approved three-way screen channel loudspeakerDual 15-inch low-frequency...

The QSC SC-423C-F is the flyable version of the SC-423C, a THX-approved three-way behind-the-screen cinema loudspeaker from QSC's SC-400 (Digital Cinema Sound) series. The "F" designation indicates factory-fitted rigging hardware so the cabinet can be safely suspended (flown) behind the screen instead of floor-stacked, which simplifies alignment in tall or space-constrained auditoriums. Acoustically it matches the standard SC-423C.Key FeaturesFlyable, THX-approved three-way screen channel...

The QSC SC-424 is a THX-approved four-way behind-the-screen cinema loudspeaker in QSC's SC-400 (Digital Cinema Sound) series. It combines a dual-15-inch low-frequency section (LF-4215 low-frequency system) with a coaxial mid/high/very-high assembly, adding a dedicated VHF section over the three-way models for extended high-frequency detail in premium and immersive auditoriums. It supports tri-amplified or quad-amplified operation.Key FeaturesTHX-approved four-way screen channel loudspeakerDual...

The QSC SC-424-8F is a flyable configuration of the SC-424, a THX-approved four-way behind-the-screen cinema loudspeaker from QSC's SC-400 (Digital Cinema Sound) series. It pairs the SC-424's dual-15-inch low-frequency section and coaxial mid/high/very-high assembly with factory rigging so the cabinet can be suspended (flown) behind the screen, easing alignment in tall or space-limited auditoriums. It supports tri-amplified or quad-amplified operation.Key FeaturesFlyable, THX-approved four-way...

The QSC SC-433C is a THX-approved three-way behind-the-screen cinema loudspeaker in QSC's SC-400 (Digital Cinema Sound) series. It uses a triple-15-inch low-frequency section for very high output and deep low-end headroom, targeting large auditoriums. The cabinet mounts behind a perforated projection screen and can be bi-amplified or tri-amplified for scalable amplifier and DSP deployment.Key FeaturesTHX-approved three-way screen channel loudspeakerThree 15-inch low-frequency woofers for high...

The QSC SC-434 is a THX-approved four-way behind-the-screen cinema loudspeaker in QSC's SC-400 (Digital Cinema Sound) series. It combines a triple-15-inch low-frequency section with a coaxial mid/high/very-high assembly, adding a dedicated VHF section for extended top-end detail in large premium and immersive auditoriums. The system supports tri-amplified or quad-amplified operation.Key FeaturesTHX-approved four-way screen channel loudspeakerThree 15-inch low-frequency woofers for high...

The QSC SC-443C is a THX-approved three-way behind-the-screen cinema loudspeaker in QSC's SC-400 (Digital Cinema Sound) series, and the largest three-way model in the family. It uses a quad-15-inch low-frequency section (four 15-inch woofers) for maximum output and low-end headroom in very large auditoriums. It mounts behind a perforated projection screen and supports bi-amplified or tri-amplified operation.Key FeaturesTHX-approved three-way screen channel loudspeakerFour 15-inch low-frequency...