QSC KS212C 2 X 12" 3600 Watt Active Cardioid Subwoofer

The QSC KS212C is a compact, cardioid subwoofer that delivers powerful, precise bass in a single-box design. Ideal for mobile entertainers, AV crews, and performance venues, it tackles the common problem of unwanted bass frequencies leaking into areas they shouldn’t. This subwoofer keeps bass exactly where you need it — tight and controlled without spillover.

Far more than a simple bass box, the KS212C is a high-performance audio tool built for clarity and control. With a 3,600-watt Class D amplifier, it provides plenty of headroom for punchy, detailed bass you can feel. Its cardioid design minimizes stage rumble and rear-firing sound, ensuring a cleaner mix for both the audience and performers.

Unprecedented Power and Precision

The KS212C represents a monumental leap in subwoofer technology, combining immense power with intelligent design to give you unparalleled control over your low-end frequencies.

3,600-Watt Class D Power Module: At the heart of the KS212C is a beastly power amplifier that provides massive, clean power. This ensures your bass remains tight and punchy even at high volumes, without the distortion that can muddy up a mix.
Dual 12-inch Long-Excursion Drivers: Equipped with two high-performance 12-inch drivers, this subwoofer moves a serious amount of air. The long-excursion design allows the cones to travel further, producing deep, impactful bass that retains its musicality and definition.
Dual 6th-Order Band-Pass Design: This sophisticated acoustic design is key to the subwoofer’s efficiency and performance. It allows for a compact enclosure while maximizing the output of the dual drivers, delivering a powerful low-frequency response that defies the cabinet's size.

Advanced Cardioid Control

The magic of the KS212C lies in its cardioid performance, which focuses bass energy forward while minimizing it everywhere else. This is your secret weapon for achieving a clean, professional sound in any environment.

15 dB SPL Front-to-Rear Attenuation: This is where the cardioid pattern truly shines. By significantly reducing the sound pressure level behind the cabinet, you can eliminate distracting stage rumble for performers and prevent low-frequency buildup in reflective rooms. The result is a tighter, more focused sound.
First-in-Class Single-Box Design: Historically, achieving a cardioid bass array required multiple enclosures and complex processing. QSC has engineered all that technology into a single, portable unit, making it easier than ever to deploy controlled, directional bass.

Built for the Road

The KS212C is engineered to withstand the demands of touring and live events, combining rugged construction with thoughtful features that make transport and setup a breeze.

Two M20 Threaded Sockets: With speaker pole mounts on both the top and side panels, you have flexible options for deploying your main speakers. This versatility ensures you can configure your PA system optimally for any space.
Four Low-Noise, Heavy-Duty Casters: Moving this subwoofer is effortless thanks to its robust, smooth-rolling casters. Designed for quiet operation, you can position the KS212C without causing a scene, making it ideal for corporate events and quiet stage setups.
Compact & Portable: Despite its immense power, the KS212C is designed for portability. Weighing in at 88.5 lbs with integrated handles, it’s manageable for a one or two-person lift, making load-in and load-out quicker and easier.

A New Standard in Controlled Bass

The QSC KS212C isn’t just a subwoofer; it’s a complete low-frequency management system in a single box. It provides the power, precision, and control needed to elevate your sound in any application, from a packed dance floor to an intimate theater. For audio professionals who refuse to compromise, the KS212C delivers on its promise of keeping the bass exactly where it belongs.

QSC KS212C Subwoofer Features:

3,600-Watt Class D power module delivers massive, clean power
Dual 12-inch long-excursion drivers for deep, impactful bass
World's first single-box powered cardioid subwoofer design
15 dB SPL front-to-rear attenuation for superior rear rejection
Dual 6th-order band-pass design for maximum efficiency
Two M20 threaded sockets for flexible speaker pole placement
Four low-noise, heavy-duty casters for easy transport
Compact enclosure for highly portable applications
Dimensions: 24.5” x 15.5” x 33.5” (622 x 394 x 851 mm)
Weight: 88.5 lbs (40.1 kg)

CALIFORNIA PROPOSITION 65 WARNING

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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