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Klipsch KW-120-THX

THX® certified passive subwoofer with matching amplifier

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  • Klipsch KW-120-THX

    Front

  • Klipsch KW-120-THX

    12" subwoofer driver with massive 15-poound magnet structure

  • Klipsch KW-120-THX

    Cutaway view

  • Klipsch KW-120-THX

    Klipsch KA-1000-THX subwoofer amplifier

  • Klipsch KW-120-THX

    Klipsch KA-1000-THX subwoofer amplifier

  • Klipsch KW-120-THX

    KW-1000-THX subwoofer

Item #: 700KW120T
 

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Our take on the Klipsch KW-120-THX

by Dave Bar
Klipsch

Why add a powered subwoofer?

A powered subwoofer gives you bass you can feel as well as hear. Our customers love the depth and impact their subs add to music and movies. We hear comments like "it brings out sounds I didn't know existed in discs I've watched a million times." Powered subwoofers aren't just for big bass that rattles your picture frames; they can also deliver tight, accurate lows. If you haven't shopped for a powered sub in a while, you might be surprised at how small they get. Look for an ultra-compact model if you want to tuck your sub away under an end table or in a corner.

Professional-grade THX home theater sound

How sturdy is your home's foundation? Well you'd better check it twice before you fire up this dynamic duo. That's because Klipsch designed the KW-120-THX subwoofer and matching KA-1000-THX amplifier to deliver intense levels of movie theater bass that'll rattle your floorboards. This two-piece Klipsch system has more than enough output to rock most rooms. But if your home theater is extra-large, the amp is ready to power a second KW-120-THX sub. A pair of these beasts will satisfy your cravings for even more bass, and meet the stringent requirements for THX Ultra2 certification.


Klipsch

Use KW-120-THX subs and KA-1000-THX amplifers, along with Klipsch's other THX certified speakers, to create your own ultimate THX home theater.

Meet the new boss

The KW-120-THX subwoofer is 80 pounds of pure, unadulterated bass thunder. Built around a 12" cast-frame, long-throw driver with a massive 15-pound magnet structure, this sub can deliver staggering output without breakup or distortion.Klipsch's ultra-light yet rigid Cerametalic™ woofer cone material helps keep the bass tight and accurate. The sub also features a professional-grade NL2 SpeakOn™ input for a secure amplifier connection, and includes a 20-foot THX Ultra certified speaker cable with NL2 SpeakOn connectors.

To ensure years of top-notch performance, Klipsch builds their THX certified speakers to the highest standards. The sub's front-ported enclosure features the same interlocking panel construction found in their professional speakers for maximum structural integrity and strength. Premium-quality internal wiring is used for superior signal transfer and clarity. And Klipsch finishes off the KW-120-THX with a beautiful and durable fascia of black brushed aluminum.

Clean power for smooth bass

The subwoofer system is packaged here with Klipsch's custom-matched KA-1000-THX amplifier. This full-featured Class D amp provides 500 watts of clean power for high-impact, low-distortion bass and is capable of delivering 1000 watts into a 4 ohm load for driving two high-performance subs. It also includes a built-in, defeatable low-pass crossover and level control, boundary-gain compensation switch, continuously variable phase control, and an auto power function for exceptional flexibility. Finished in black with a machined aluminum front panel and knobs, the amp's standard chassis width and handsome appearance allow it to fit in easily with your other components. Or you can hide it away in a cabinet to reduce clutter.

Highlights:

    KW-120-THX passive subwoofer:
    • frequency response 20-200 Hz (±3dB)
    • 12" long-throw Ceremetalic™ woofer with cast aluminum frame and massive 240 oz. magnet structure
    • bass-reflex cabinet with front-firing slot port
    • Galaxy Black finish with black anodized aluminum fascia
    • impedance: 8 ohms
    • NL2 SpeakOn™ inputs for secure amplifier connection
    • 20 foot THX Ultra certified speaker cable with NL2 SpeakOn connectors included
    • dimensions: 17-3/4"W x 20-1/4"H x 17-3/4"D (with grille attached)
    • weight: 80 lbs.
    • warranty: 5 years
    KA-1000-THX amplifier:
    • 500 watts (mono) RMS into 8 ohms (1000 watts into 4 ohms when driving two subwoofers)
    • can support two high performance KW-120-THX subs for full THX Ultra2 certified sound
    • frequency response 20-1,000 Hz (+0/-3 dB)
    • high-efficiency Class D amplifier with massive toroidal power supply transformer
    • continuously variable 40-120 Hz low-pass crossover
    • 2 gold-plated RCA line-level/LFE inputs
    • 2 gold-plated RCA line-level outputs (pass through)
    • THX on/off and boundary gain compensation on/off switches
    • adjustable phase control from 0 to 180 degrees
    • signal-sensing auto on/off mode
    • two professional-style SpeakOn NL2 speaker outputs
    • machined black aluminum face plate and knobs
    • detachable AC power cord
    • 17-1/2"W x 4-3/4"H x 12-1/4"D
    • weight: 27 lbs.
    • warranty: 2 years
    • Our 60-day money-back guarantee
    Preliminary info from the manufacturer
    Features and Specs
    Enclosure
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    Bass Reflex
    Video Shielded
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    No
    Woofer Size (inches)
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    12
    Woofer Composition
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    Cerametallic
    Firing Direction
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    Front
    Wireless
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    No
    Preamp-Level Inputs
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    Yes
    Speaker-Level Inputs
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    No
    Speaker-Level Outputs
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    No
    Low-Pass Crossover Freq
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    40-120
    High-Pass Crossover Freq
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    ---
    Phase Switch
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    Yes
    Amplifier Output (watts)
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    500
    Frequency Response
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    20-200 Hz
    Height (inches)
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    20-1/4
    Width (inches)
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    17-3/4
    Depth (inches)
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    17-3/4
    Weight
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    80 lbs
    Speaker Parts Warranty
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    5 Years
    Speaker Labor Warranty
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    5 Years
    Amplifier Parts Warranty
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    2 Years
    Amplifier Labor Warranty
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    2 Years
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    Klipsch KW-120-THX Reviews

    Average Customer Review:

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    5 out of 5

    Great Sub(s)

    Written By Pablo906, Knoxville, TN on Tuesday, December 31, 2013
     
    I have a full set of Klipsch THX Ultra 2 speakers including 2 of these subs with a single amp. The amp takes a single mono input therefore even though it's two subs it's not .2 it's still .1 as far as configuration for the amp. You could use two amps to get the stereo LFE channel but I don't think it's necessary. A single one will fill most rooms with plenty of bass, a pair of these with proper placement and room treatment are simply stunning. They dig deep and they play clear. They are very detailed and handle going from soft accentuating bass to big booms and bangs seamlessly. More importantly there is quite a bit of very deep LFE track tones that add rumble and ambiance to modern movies especially with uncompressed sound, these handle that stuff better than any of the other subs I've owned and tested. The only subs I put in the same ballpark as these would be JL, SVS, or ED. The SVS in pairs can keep up with these possibly even surpass them but after listening to many different HT setups I simply liked the Klipsch the best.
    Pros:
    size frequency response musicality
    Cons:
    price
    Was this review helpful?    Yes | No
     

    Add accessories for the Klipsch KW-120-THX

    Use a high-quality subwoofer cable for bass that draws you into your movies and music. A cable is not included with this sub. See all categories & accessories

    Monster Cable® 600sw Subwoofer cable (4 meters/13.2 feet)
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    Monster Cable® 400sw Subwoofer cable (4 meters/13.2 feet)
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    AudioQuest Black Lab Subwoofer cable (16 meters/52.5 feet)
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    CableTruth 303S Subwoofer cable (9 ft.)
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    AudioQuest Irish Red Subwoofer cable (12 meters/39.4 feet)
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    AudioQuest Boxer Subwoofer cable (2 meters/6.6 feet)
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    Panamax MD2 Space-saving surge protector with two outlets
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    AudioQuest X2 Speaker Cable 14-gauge cable, connectors optional (30 feet, Gray)
    19 people say
    Your Price: $58.99
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    AudioQuest G2 Speaker Cable 16-gauge cable, connectors optional (30 feet, Gray)
    18 people say
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