The QSC CS15-NA is a compact 15-inch active subwoofer designed to deliver powerful, articulate low-frequency reinforcement. Its 2600W peak Class D amplifier provides high-output performance, making it suitable for DJs, mobile entertainers, musicians, houses of worship, event production, and installed sound applications

Bluetooth audio streaming with True Wireless Stereo (TWS) capability provides convenient wireless playback, while the QSC Loudspeaker Control App enables wireless system control. The DEEP™ preset enhances low-frequency extension and impact, and the Cardioid deployment preset helps improve bass directionality when using at least two subwoofers

Built for professional use, the CS15 features a rugged painted birch plywood enclosure, a powder-coated steel grille, and an efficient convection-cooled design. Its compact construction and M20 threaded pole mount support flexible setup and convenient deployment in portable and installed audio systems.

Key Features

• 15-inch direct-radiating subwoofer design
• 2600W peak Class D amplification
• Bluetooth streaming with TWS capability
• Wireless control through the QSC Loudspeaker Control App
• DEEP™ low-frequency enhancement preset
• Cardioid deployment preset for directional bass control
• Two XLR/TRS combo inputs
• Loop-thru and post-DSP XLR outputs.

Ideal For

• DJs and mobile entertainers
• Live music and event production
• Houses of worship
• Professional sound reinforcement
• Installed audio systems

What’s in the Box

• QSC CS15-NA Active Subwoofer

Frequently Asked Questions

Q: What size driver does the CS15-NA use?

It features a 15-inch direct-radiating cone driver.

Q: How powerful is the amplifier?

The subwoofer uses a Class D amplifier rated at 2600W peak.

Q: Does it support Bluetooth?

Yes. It supports Bluetooth audio streaming with True Wireless Stereo (TWS) capability.

Q: What is the Cardioid preset used for?

It helps improve low-frequency directionality and requires a minimum of two subwoofers.

Full Technical Specifications

General

Configuration	Direct Radiating
LF Transducer	15" Cone Driver
Amplifier	Class D, 2600W Peak
Maximum SPL	133 dB
Frequency Response (-6 dB)	47 Hz–100 Hz
Frequency Response with DEEP™	44 Hz–100 Hz
Frequency Range (-10 dB)	43 Hz–108 Hz
Frequency Range with DEEP™	39 Hz–100 Hz
Coverage Pattern	Omnidirectional or Cardioid Radiation Modes
Bluetooth	Bluetooth Audio with True Wireless Stereo (TWS)
Mobile App Control	QSC Loudspeaker Control App
DSP Presets	DEEP™ and Cardioid
Cooling	Convection Cooled
Power Supply	Universal Power Supply
Power Input	100–240 VAC, 50–60 Hz

Connectivity

Analog Inputs	2 × Locking XLR/F-1/4" Combo Inputs
Analog Outputs	2 × XLR/M
Output Types	1 Loop-Thru, 1 Post-DSP

Construction

Enclosure Material	12–15 mm Birch Plywood
Grille	16-Gauge Powder-Coated Steel
Pole Mount	M20 Threaded Mount

Physical Specifications

Product Weight	58.7 lbs
Product Dimensions	23.1" H × 17.7" W × 20.4" D
Shipping Weight	70.7 lbs
Shipping Dimensions	22.5" H × 20.5" W × 25.6" D