Used QSC KS212C Powered Dual 12" Cardioid Subwoofer, 3600W Peak Power

The KS212C is the world's first-in-class single-box powered cardioid subwoofer solution for highly portable entertainment and installation applications. A breakthrough in innovation and design, the 3,600 Watt KS212C subwoofer uniquely provides all the benefits of cardioid deployment in a single, compact enclosure. "Keeping bass in its place" for mobile entertainers, AV production and rental professionals, as well as modestly-sized performance venues, the KS212C subwoofer is unparalleled in its ability to manage low frequencies on the stage or any application where undesirable low frequency energy needs to be minimized.

• "First-in-class" compact single-box cardioid solution
• 3600 Watt Class-D amplifier module
• Cardioid pattern provides -15 dB SPL attenuation front-to-rear
• Dual 12-inch, long-excursion drivers; Dual 6th order band-pass design
• Variable crossover and savable/recallable Scenes for commonly-used applications
• Intrinsic Correction tuning and loudspeaker management
• Refined, professional appearance looks great in any application
• Rugged painted wood enclosure for long life and lasting durability
• Deployment in either vertical or horizontal positions with M20 speaker pole fittings in either position
• Optional KS-LOC security cover prevents unauthorized tampering of controls
• Four low-noise, heavy-duty casters

Powered by a 3,600 Watt Class D amplifier, processed with the latest DSP technology and featuring dual 12-inch long excursion drivers each arranged in a 6th order bandpass chamber, these components all combine seamlessly to produce a staggering 15 dB more output at the front of the cabinet than at the rear. Highly portable, the cabinet features comfortable, aluminum handles and four, rear-mounted casters. Two M20 sockets accept a 35mm speaker pole in other horizontal or vertical orientation.

Typical Subwoofer Energy Dispersion
Most subwoofers radiate energy around the entire enclosure, leading to undesirable LF build-Upon stage and wasted energy around the sides and rear of the system.

Cardioid Subwoofer Energy Dispersion
The KS212C keeps "Bass in its Place" with a single-box cardioid array that produces an amazing 15 dB more output at the front than at the rear.

The Problem
Typically, subwoofers are omnidirectional, radiating sound equally in all directions. This results in troublesome, unwanted low-frequency build-Upon stage as well as undesired, wasted LF energy at the rear of the system. In more recent years, concert sound providers have been able to create cardioid (heart-shaped) coverage of their subwoofer arrays through some clever manipulation of placement, delay and polarity, redirecting desired LF energy forward and minimizing energy at the sides and rear. Unfortunately, this technique is costly and requires multiple enclosures, amplifiers and processors.

The KS212C Solution
Representing a breakthrough in innovation and design, the KS212C uniquely provides all the benefits of a cardioid subwoofer array, but in a single, compact enclosure. "Keeping bass in its place" for mobile entertainers, AV production and rental professionals, as well as modestly-sized performance venues, the KS212C is unparalleled in its ability to manage low frequencies on the stage or any application where undesirable low frequency energy needs to be minimized.