News
QSC Adds Premium Outdoor Landscape Loudspeaker System to its AcousticDesign Series
17/02/2022
Product
Introducing the QSC CS Series CS15 and CS18 Active Subwoofers
05/11/2026
Powerful, portable bass performance meets exceptional value with the new QSC CS Series, featuring the CS15 and CS18 active subwoofers, designed for DJs, live performances, event production and installed audio applications.
QSC CS Series — Powerful Bass, Simplified Performance
QSC has expanded its C Class loudspeaker range with the introduction of the new CS Series active subwoofers, bringing powerful low-frequency performance, intuitive control and exceptional versatility to a compact, portable design.
Available in two models, the 15-inch CS15 and 18-inch CS18, the new range offers flexible solutions for DJs, mobile entertainers, musicians, live event professionals, houses of worship and smaller installed sound systems.
Combining powerful Class D amplification with intuitive onboard controls and wireless functionality, the CS Series makes it easier than ever to deliver impactful bass without unnecessary complexity.
Powerful Performance for Every Application
At the heart of both CS Series models is a 2600 W peak Class D amplifier, delivering impressive low-frequency output with the efficiency and reliability expected from QSC.
The compact CS15 provides up to 133 dB maximum SPL, making it an excellent choice for applications where portability and space are key considerations. For larger spaces and applications requiring greater low-frequency extension, the CS18 features an 18-inch driver and delivers up to 134 dB maximum SPL.
Both models also feature QSC's DEEP™ preset, extending low-frequency response and providing additional bass impact when needed.
Simple Setup, Flexible Control
Designed with ease of use in mind, the CS Series features an intuitive rear control interface for quick setup and adjustments.
Bluetooth connectivity provides access to the QSC Loudspeaker Control app, allowing users to manage loudspeaker settings wirelessly, including additional DSP functionality such as room delay and custom output configuration.
Bluetooth audio with True Wireless Stereo (TWS) connectivity also provides flexible wireless audio playback options.
For applications requiring greater control over low-frequency coverage, the CS Series includes a quick Cardioid deployment preset. Using a minimum of two compatible subwoofers, this configuration helps manage bass energy behind the system, making it particularly useful for live performance environments.
Key Features
- 15-inch CS15 and 18-inch CS18 active subwoofer models.
- Powerful 2600 W peak Class D amplification.
- Maximum rated SPL of 133 dB (CS15) and 134 dB (CS18).
- Bluetooth audio with True Wireless Stereo (TWS) connectivity.
- Wireless configuration using the QSC Loudspeaker Control app.
- DEEP™ preset for enhanced low-frequency extension and impact.
- Quick Cardioid deployment preset when using two or more subwoofers.
- Two locking XLR/¼-inch combo inputs, with loop-through and post-DSP output connections.
- Durable painted birch plywood enclosures with integrated M20 threaded pole mounts.
- Six-year warranty when registered within 30 days of purchase.
Designed for Portability and Reliability
Whether used as part of a mobile DJ system, a live performance setup or a compact installation, the CS Series has been engineered for straightforward transportation and deployment.
The CS15 weighs just 26.6 kg, while the larger CS18 weighs 37.6 kg, with both featuring rugged wooden enclosures designed to withstand the demands of regular use.
The integrated M20 pole mount allows convenient pairing with compatible full-range loudspeakers, while the CS Series has been tuned to complement QSC C Series loudspeakers and can also be used alongside K Series models.
With a choice of sizes and scalable deployment options, the CS Series delivers a practical balance of performance, flexibility and value.
Expanding the QSC Loudspeaker Portfolio
The introduction of the CS Series provides a new entry point into QSC's professional active subwoofer range, sitting alongside the established KS and LS Series.
Designed for users seeking dependable low-frequency reinforcement without the complexity of larger production systems, the CS15 and CS18 combine familiar QSC performance with accessible operation and flexible system configuration.
From compact entertainment systems to live performances and permanent installations, the new CS Series offers a versatile solution for delivering powerful, consistent bass.
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