Klipsch KW-120-THX 12" Passive THX Subwoofer - Each


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.

To achieve intense, deep-bass output in large rooms, this high-performance subwoofer that is part of the THX Ultra2 family features a 12″, 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.

Klipsch KW-120-THX Features

  • 12″ Cerametallic cast-frame, long-throw driver with 240-ounce magnet structure
  • Front-ported enclosure for maximum installation flexibility
  • Top-of-the-line internal wiring
  • Very high output capability (130dB at 30Hz)
  • NL2 SpeakOn inputs for correct, secure amplifier connection

Klipsch KW-120-THX 12" Passive THX Subwoofer - Each

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SKU KW120THX Categories , Tag


frequency response 20-200Hz 3dB
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)
nominal impedance 8 ohms
woofer 12″ (30.5cm) front-firing, Cermetallic cone, cast aluminum frame driver with a 240oz ceramic magnet structure
amplifier Use only with KA-1000-THX
enclosure material MDF
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



Additional information

Weight 95 lbs
Dimensions 28 × 28 × 28 in
Subwoofer Size

12 Inch




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