QSC CS15 15" 2600W Powered Subwoofer

Compact low-frequency reinforcement is easier to bring to the gig with the QSC CS15 15" 2600W powered subwoofer. Its 15" driver and Class-D amplification deliver 2600W peak power and up to 133dB maximum rated SPL, with a DEEP preset for added low-frequency extension. Bluetooth 5.1 audio streaming and control through the QSC Loudspeaker Control app expand system flexibility, while the Custom Output Connector allows Bluetooth audio to feed compatible powered speakers without built-in Bluetooth, including QSC CP Series models. Quick Cardioid deployment for setups using at least two subwoofers gives DJs, bands and event professionals another way to manage low-frequency coverage.

15" Driver and 2600W Class-D Amplification

The CS15 combines a 15" direct-radiating driver with a 2600W peak Class-D amplifier to deliver low-frequency reinforcement for mobile DJs, live bands and small event systems. Its standard frequency response extends from 47Hz–100Hz at -6dB, while engaging the DEEP preset extends the low-frequency response to 44Hz. The painted birch plywood enclosure provides a durable foundation for portable use, with a relatively compact footprint that makes the subwoofer practical for systems where transport and setup are important considerations.

Bluetooth Audio Routing and Flexible Low-Frequency Control

Bluetooth 5.1 audio streaming gives the CS15 a wireless playback option, while True Wireless Stereo connectivity supports compatible stereo system configurations. Through the Custom Output Connector, Bluetooth audio can also be routed to compatible powered loudspeakers that lack built-in Bluetooth, such as QSC CP Series models, extending wireless playback across the system. The QSC Loudspeaker Control app provides additional adjustments over Bluetooth, complementing the rear-panel gain and selection controls. A DEEP preset adds low-frequency extension, while Quick Cardioid deployment supports directional bass coverage when at least two compatible CS subwoofers are used.

Flexible Connections and Road-Ready System Deployment

Two locking XLR/1/4" combo inputs and two XLR outputs with loop-through and post-DSP routing accommodate a range of loudspeaker configurations. An M20 threaded pole mount supports compatible speaker poles, while the universal 100–240V power supply simplifies operation across different electrical environments. The rugged painted birch plywood enclosure is designed for portable use, and the CS15 weighs 58.7 lb. Tuned for integration with QSC C Class loudspeakers and compatible with K Series systems, the subwoofer provides a practical foundation for expandable PA setups. Add dedicated bass