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Klipsch KW-120-THX

Subwoofer in Black

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  • Adding a Subwoofer to Your Home Theater



The world's finest theater operators choose Klipsch cinema systems because they deliver the full impact of the most intense action movie soundtracks without sacrificing musical definition. When designing the KW-120-THX subwoofer, Klipsch applied its theater experience to bring the same powerful, deep-driving bass to the comforts of home.

  • 12-inch, long-throw Cerametallic™ driver
  • Front-firing port
  • Top-of-the-line internal wiring

To achieve intense, deep-bass output in large rooms, this high-performance subwoofer that is part of the THX® Ultra2 family features a 12-inch, long-throw Cerametallic™ driver and front-firing port. It includes a 15 pound motor structure and a 20-foot Monster® THX Ultra cable with Neutrik Speakon® connectors. The subwoofer is driven by an external 1-kilowatt amplifier (KA-1000-THX) tailored to its characteristics for maximum output and reliability with extremely low distortion.

The subwoofer's enclosure has the dado and rabbet construction used in Klipsch professional speakers for structural integrity.

Finished in Galaxy black with an aluminum fascia, the KW-120-THX also features top-of-the-line internal wiring to ensure that every roar or explosion is heard with complete clarity.


POWER HANDLING See KA-1000-THX specifications
SENSITIVITY 130dB @ 30Hz, 122dB @ 20Hz, 112dB @ 15Hz 1/8 space, 1m (2 enclosures side-by-side per THX Ultra2)
WOOFER 12" (30.5cm) front-firing, Cermetallic(tm) cone, cast aluminum frame driver with a 240oz ceramic magnet structure
AMPLIFIER Use only with KA-1000-THX
ENCLOSURE TYPE Bass reflex via front-firing slot port
DIMENSIONS 20.25" (51.4cm) H x 17.75" (45.1cm) W x 17.75" (45.1cm) D (w/ grille)
WEIGHT 80 lbs. (36.3kg)
FINISHES Galaxy Black cabinet with Black anodized aluminum fascia


System Bass-reflex
Orientation Front-firing
Amplifier Power (RMS) 500 Watts
Amplifier type Class D
Frequency Response +/-3dB 20-200 Hz
Max in-room SPL No
Impedance 8 ohms
Driver Size 12-inch
Woofer 12" Cerametallic
Port Yes
Passive radiator(s) No
Speaker Level Inputs Yes
Speaker level inputs Yes
Speaker level outputs No
Line level input(s) RCA mono/stereo (KA-1000-THX amp)
Line level output(s) Yes
Balanced inputs Yes
Phase control 0-180 variable (KA-1000-THX amp)
LP Crossover Frequencies 40-120 Hz
LP Crossover Type Variable
Wireless No
Height (inches) 20.3"
Width (inches) 17.8"
Depth (inches) 17.8"
Enclosure MDF
Grille Plastic
Weight (lbs) 80 lbs
Color Black


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