15% OFF qualifying purchase over $249* + Free Shipping on most orders Code:MM15 Details

QSC KS212C Powered Dual 12" Cardioid Subwoofer

*Roll over image to zoom

*Click image to zoom


Orders received by 3PM ET ship same business day.
In-stock orders only.
Placed before 3PM EST
Mon-Fri (excluding Holidays).
Some exclusions apply.
Item#: KS212C
UPC: 684284066763
Availability: In Stock & Ready To Ship
Check In-Store Availability

I DJ NOW Webstore – Orders to be Shipped only: 1 800 355 7746 I DJ NOW - Babylon, NY store (Pick Up In Store Only)
Mon - Sat 10am - 8pm
Sun 11am - 5:00pm
631 321 1700

I DJ NOW - Queens, NY Store (Pick Up In Store Only)
Mon - Fri 10am - 9pm
Sat 10am - 7pm
Sun 12 noon - 6pm
718 762 0100

Shipping Estimate Map
Shipping Estimate Map
Standard Shipping Charges Apply
Standard Shipping fees apply to oversized or overweight items such as oversized speakers, oversized cases, facades, trussing & staging. Shipping fees also apply to fluids, certain parts and special orders that may not be stocked directly by IDJNOW. If you have any questions regarding this policy, please call us at 1800.355.7746.


The lowest price is not always the best price. When you shop with us, you can always expect to get our BestPrice+Plus guaranteed.

Learn More
Seen It For Less?

2-Yr Extended Consumer Priority Service:

Protect your investment with a warranty from Consumer Priority Service. Buying a Consumer Priority Service extended protection service plan from I DJ NOW, not only means you’re getting the highest level of customer service and peace of mind, but it also means you can rest assured in the event your product does need repairing. The repair center technicians are factory trained and authorized to repair your product and only use state of the art testing equipment needed to properly diagnose and repair your product. Why worry about not having a warranty long enough to cover the majority of use? Simply purchase this affordable and sensible extended warranty now and be worry free!

Questions? Contact Us.

About This Product

The KS212C subwoofer represents 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.

QSC KS212C Powered Dual 12" Cardioid Subwoofer Features:

  • 3600 Watt Class D power module.
  • Dual 12-inch long excursion drivers; Dual 6th order band-pass design.
  • 15 dB SPL attenuation front-to-rear.
  • Two M20 threaded sockets (one on top, one on side) accept 35 mm speaker pole.
  • Four low-noise, heavy-duty casters.
  • HxWxD = 26” x 15” x 28” (665 x 381 x 714 mm).
  • 90 lbs (41 kg).

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.

QSC KS212C Powered Dual 12" Cardioid Subwoofer Specifications:
ConfigurationDual 6th-order bandpass cardioid subwoofer
LF Transducer2 x 12” (305 mm), cone
Frequency Response (-6 dB)44 Hz - 104 Hz
Frequency Range (-10 dB)39 Hz - 118 Hz
Nominal Coverage Angle180˚ Cardioid (15dB rear rejection @ 70Hz)
Maximum Rated SPL1132dB @1m, peak
AmplifierClass D
2 x 1800W (peak)
CoolingLow-noise, variable speed fan
Rotary encoder
2 x selection buttons
Indicators2 x Power LED (front and rear)
Input Signal LED
Limiter active LED
Connectors2 x locking XLR/F ¼” combo
2 x XLR/M (Loop-thru Output)
1 x locking IEC power connector
AC Power InputUniversal power supply 100 – 240 VAC, 50 – 60 Hz
AC Power Consumption1/8th power
Enclosure Details
Enclosure18mm birch plywood
ColorBlack (RAL 9011)
GrilleInternal woofer cover
Dimensions (HWD) inches24" × 15" × 19.6"
Dimensions (HWD) mm610 mm x 381 mm x 498 mm
Net Weight40.1 kg (88.4 lbs)
Shipping WeightTBD
RegulatoryCE, WEEE, UL, CHina RoHS, RoHS II, FCC Class B  
Optional AccessoriesKS212C Cover, KS-LOC Lock-Out Cover
SP-16X Extension Pole, SP-36 Speaker Pole

Each QSC KS212C Retail Box Includes:
(1) QSC KS212C Powered Dual 12" Cardioid Subwoofer
(1) Locking IEC AC Power Cord
(1) QSC Limited Warranty Information Card
(1) KS212C Quick Start Guide
(1) Powered Loudspeaker Safety Sheet
(1) 35MM,M20 Loudspeaker Pole

Split your purchase into easy monthly payments.
See if you qualify with Affirm.
Learn More