QSC KS212C Spec sheet
QSC KS212C is a single-box powered cardioid subwoofer solution designed for highly portable entertainment and installation applications. It features a compact design, 3600 Watt Class-D amplifier, dual 12-inch long-excursion drivers, and a cardioid pattern that provides -15 dB SPL attenuation front-to-rear. The KS212C is ideal for musicians, bands, clubs, venues, DJs, dance events, and AV rental or production. It offers refined professional appearance, rugged construction, and deployment flexibility with M20 speaker pole fittings in both vertical and horizontal positions.
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P R E L I M I N A RY
KS212C
Powered Cardioid
Subwoofer
KEY FEATURES
• ”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 TM 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
• Complete EASE & CAD information available online
• 6-Year Warranty*
KS212C
Musicians/Bands ∙ Clubs/Venues ∙ DJs/Dance · AV Rental/Production
The KS212C is the world’s first-in-class single-box powered cardioid subwoofer solution for highly portable entertainment and installation applications.
Typical Subwoofer Energy Dispersion
Most subwoofers radiate energy around the entire enclosure, leading to undesirable LF build-up on stage and wasted energy around the sides and rear of the system.
-15dB 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-up on 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.
KS212C Cardioid Subwoofer Front Back
P R E L I M I N A RY
KS212C Specifications
KS212C
Configuration: Dual 6th-order bandpass cardioid subwoofer
LF Transducer:
Frequency Response (-6 dB):
Frequency Range (-10 dB):
Nominal Coverage Angle:
2 x 12” (305 mm), cone
44 Hz - 104 Hz
39 - 118 Hz
180˚ Cardioid (15 dB rear rejection @ 70 Hz)
Maximum Rated SPL 1 :
Amplifier:
Cooling:
Connectors:
AC Power Input:
132 dB @1 m, peak
Class D
2 x 1800 W (peak)
Low-noise, variable speed fan
Controls: Power
Gain
Rotary encoder
2 x selection buttons
Indicators: 2 x Power LED (front and rear)
Input Signal LED
Limiter active LED
2 x locking XLR/F ¼” combo
2 x XLR/M (Loop-thru Output)
1 x locking IEC power connector
Universal power supply 100 – 240 VAC, 50 – 60 Hz
1/8th Power AC Power Consumption
Enclosure Details
Enclosure:
Color:
Grille:
Dimensions (HxWxD):
18 mm Birch Plywood
Black (RAL 9011)
Internal woofer cover
24” x 15 x 33.5 in
610 x 381 x 851 mm
Net Weight:
Shipping Weight:
Regulatory:
Optional Accessories:
40.1 kg (88.4 lbs)
TBD
CE, WEEE, UL, CHina RoHS, RoHS II, FCC Class B
KS212C Cover, KS-LOC Lock-Out Cover
SP-16X Extension Pole, SP-36 Speaker Pole
1 Peak SPL is measured on-axis at 1m, pink noise crest factor 10 dB, unweighted Continuous SPL is based on theoretical calculations based upon transducer sensitivity and peak available power (for comparison purpose and in accordance with
common industry practice.
* With product registration. Visit QSC.com for full details.
Specifications subject to change without notice.
+1·800·854·4079 | +1·714·754·6175 | WWW.QSC.COM
QSC, LLC. 1675 MacArthur Boulevard Costa Mesa, CA 92626 USA. ©2017 QSC, LLC. All rights reserved. QSC and the QSC logo are registered trademark s of QSC, LLC in the U.S. Patent and Trademark Office and other countries. DMT, Intrinsic Correction, and the World of K logo are trademarks of QSC, LLC. Specifications subject to change without notice.

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