QSC KC 12 BK B-Stock

B-Stock with Full Warranty
Return that may have slight traces of use.

Active 3-Way Column Speaker System

Power: 3000 W Class D (subwoofer 2000 W, midrange/tweeter 1000 W)
Speaker configuration: 12" subwoofer, 2 x 4" midrange drivers and 1" compression driver
Max. sound pressure level: 132 dB (peak)
Frequency response: 40 - 20,000 Hz (- 10 dB)
Dispersion pattern: 145° x 35°
Bluetooth audio with True Wireless Stereo for low-latency pairing of up to 4 KC 12 systems
QSC Speaker Control App for intuitive operation
Monochrome LCD display with rotary encoder and selection buttons
Presets/EQ presets: Seven microphone settings, two acoustic guitar settings, two bass/keyboard/electronic drum settings and HPF per channel
Parametric 4-band EQ
Three reverb modes
Delay from 0 to 200 ms
Three subwoofer modes
Three contour modes
Scenes can be saved and recalled (Preset, Contour, Sub Level, Delay, EQ, Reverb, Output)
Security mode protects the system against unauthorised access
Built-in 3-channel mixer with gain controls
Signal/Clip LED and +48 V phantom power (Channel 1: Line/Mic/Hi-Z, Channel 2: Line/Mic/Hi-Z, Channel 3: Bluetooth or Aux input)
Mid-range/tweeter in an impact-resistant ABS plastic housing
Subwoofer in a 12 mm birch plywood housing
Powder-coated steel speaker grille
Inputs: Two XLR combo sockets
Aux input: One 3.5 mm stereo mini-jack
Outputs: Two XLR male
One USB-C
One lockable IEC mains connector
Dimensions (H x W x D): 2270 x 357 x 455 mm
Weight: 27.3 kg
Colour: Black (RAL 9011)
Includes 810 mm distance rod

Note:6-year QSC warranty upon product registration.

30-Day Money-Back Guarantee

3-Year Thomann Warranty

Available since April 2025
Item number 619439
Sales Unit 1 piece(s)
Height 2270 mm
Weight 27,3 kg
Sub Woofer 1x12
Power (Manufacturer Info) 3000 W
Inputs simultaneously 3
Mic Preamp 2
Battery No
App Support Yes
Bluetooth Play Yes
USB Player No
Incl. Subwoofer Yes
Width 357 mm
more than 150 people Yes
more than 300 people Yes
Depth 455 mm
Active Speaker Yes
Speakers (Row) 2x 4; 1x 1
Line Array / Column Yes
Line Out XLR
Colour Black
Cover inclusive

Also available as brand new product 23.990 kr

20.390 kr

-7% 30-days best price: 21.890 kr

All prices incl. VAT

Sales Rank

in Column PA Systems

Quality, simplicity, connectivity

The QSC KC 12 is an active three-way loudspeaker combining a 12" subwoofer, two 4" midrange drivers, and a 1" compression driver in a modular column array system. At its core is QSC's patented LEAF waveguide – first deployed in the company's L-Class line-array systems – delivering 145° horizontal and 35° vertical coverage with controlled, uniform dispersion across the full listening area. The system delivers 3000W total output, split between 2000W for the subwoofer and 1000W for the mid/high section. Unlike many column systems optimised primarily for appearance, the KC 12 treats acoustic performance and aesthetic refinement as equal priorities – with QSC's LEAF technology fundamental to the former.

QSC KC 12 Black, 3-way column speaker system

A professional problem-solver...

The QSC KC 12 operates as an active system with a Class D power amplifier and offers three input options: a low-latency TWS Bluetooth connection combined with a 3.5mm stereo TRS jack, plus two XLR combo sockets – one Mic/Line/Hi-Z and one Mic/Line/+48V – each with independently assignable presets for their respective channels. On the rear panel, a multifunctional digital display manages sound output and system functions including global parametric EQ, subwoofer level, and room effects. All parameters are also accessible remotely via QSC's Loudspeaker Control app.

Control panel and connections on the QSC KC 12 Black, 3-way column speaker system

...for elegant events

The QSC KC 12 is designed for private functions, corporate events, and working DJs who need professional sound quality and flexible deployment in a single self-contained unit. The system operates with or without the pole mount, allowing placement on the floor, a stage riser, or directly on stage, with adjustable distance between the subwoofer and the satellite column. This makes it a practical solution for solo entertainers, musicians, bands, MCs, and AV productions alike. Bluetooth connectivity accepts virtually any audio source – including smartphone streaming – without additional hardware.

About QSC

QSC was founded in California in 1968 and has since established itself as a global leader in the design and manufacture of professional audio system solutions. At QSC, everything - power amplifiers, loudspeakers, digital signal processing (DSP) and digital mixing consoles – is developed under the one roof. This results in products and systems whose features are perfectly matched to one another. QSC's expertise is also evident in its state-of-the-art production technology and quality control. Its products are manufactured both in China and in QSC's own facility, which covers more than 7,500 square meters in Costa Mesa, California.

QSC LEAF Waveguide

QSC's LEAF waveguide (Length-Equalised Acoustic Flare) delivers uniform, controlled coverage of 145° horizontally and 35° vertically – this ensures consistent throw across the listening area, maintaining even levels and tonal balance from front to back and across the audience. The patented technology produces a wide, highly transparent sound field – first deployed in QSC's L-Class line-array speakers and now implemented in column systems such as the KC 12. The waveguide functions as an acoustic impedance adaptor: The high impedance of the compression driver's exit is precisely matched to the low acoustic impedance of the external air load. This improves driver efficiency under acoustic load, enabling low crossover frequencies and supporting the high headroom and controlled directivity the system is designed to achieve. At low frequencies, wavelengths are large enough that the subwoofer radiates effectively as a point source, operating independently of the waveguide's directional behaviour.

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