Qsc CS18

The CS15 and CS18 active subwoofers from the CS Series are powerful, portable solutions designed to deliver high-end performance and unmatched value. CS Series subwoofers provide clean, punchy low-frequency output, making them ideal for mobile DJs and performers, event production professionals, musicians and bands, as well as small-scale installations.

Engineered for optimal reliability and portability, both models feature lightweight enclosures that make transport and setup easy. The CS Series combines exceptional sonic consistency with intuitive operation, offering simple, clear controls alongside advanced features accessible via the QSC Loudspeaker Control app over Bluetooth®.

With performance tailored to real-world needs and a price point optimized for maximum return on investment, the CS15 and CS18 models allow users to build scalable, seamlessly integrated systems—without unnecessary expense or compromise on audio quality.


- A scalable range featuring compact 15-inch models and high-output 18-inch models, suited to a wide variety of system sizes and applications.
- Bluetooth® audio with True Wireless Stereo (TWS) functionality, ensuring low-latency pairing between the music source and both left and right speakers simultaneously.
- Wireless control of speaker functions via the QSC Loudspeaker Control app.
- Class D amplifier module delivering 2600 W of peak power, featuring a universal power supply and low power consumption.
- A simple, intuitive rear interface for quick setup and real-time adjustments.
- DEEP™ preset for extended low-frequency response and increased impact. - Cardioid deployment preset (requires a minimum of two subwoofers).
- Robust wooden enclosure for exceptional durability.
- Two XLR inputs (with pass-thru) and assignable output options.
- M20 threaded pole mount.