Klipsch

Klipsch Reference R-121SW 12" 400W Powered Subwoofer, Black

Key item features

  • Dynamic Audio: The all-digital amplifier delivers 200W/400W of power, ensuring efficient and dynamic performance for immersive sound in any home theater setup.
  • Seamless Integration: Equipped with line-level/LFE RCA jacks, this subwoofer easily integrates with various audio systems, providing flexible connectivity for enhanced sound.
  • Precise Customization: Adjust volume, low-pass filter, and phase (0/180) to fine-tune bass output, tailoring the sound to your room and preferences for optimal audio quality.
  • Elegant Aesthetics: Finished with black textured wood grain vinyl, this subwoofer blends seamlessly with any decor, adding a touch of elegance to your home entertainment system.
  • Robust Construction: The MDF enclosure with a rear-firing port minimizes distortion, delivering clear and accurate bass while ensuring long-lasting durability and performance.
  • Advanced Woofer: Features revamped spun-copper thermoformed crystalline polymer woofers for exceptionally light, low-frequency response and minimal cone breakup.
  • Thoughtful Design: Includes a front-mounted LED power indicator and a low-profile grille, enhancing aesthetic appeal while maintaining acoustic transparency.
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Current price is Now $470.06
You save $179.93
was $649.99
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Customer ratings & reviews

4.8 out of 5 stars
stars
88 ratings87 reviews
How item rating is calculated
  1. 5 stars89% (78)
  2. 4 stars7% (6)
  3. 3 stars2% (2)
  4. 2 stars0% (0)
  5. 1 star2% (2)

Reviews summary

Pros

  • : Delivers deep low-end sound.
  • : Produces deep bass sound for music.
  • : Provides precise low-frequency audio reproduction.
  • : Provides enhanced low-frequency sound for cinematic experiences.
  • : Offers great value with compromises.
  • : Delivers powerful low-frequency sound.
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Showing 1-3 of 87 reviews

Feb 23, 2026
Walmart customer
5 out of 5 stars review

Seller Verified Purchase

Great big bang for the buck!

I have two R-121SW subs filling in all my bass in my 7.2 theater room setup. These subs sound amazing and easily rattle the entire house. In fact, the gains are not even at half volume! They're a great big bang for the buck with great quality sound!

Review from klipsch.com
Helpful?70R8EPCJUPWI5223584965
Feb 24, 2023
YoyoThePal
5 out of 5 stars review

Seller Verified Purchase

Well worth it

After finally moving out of apartments that banned subwoofers, I finally found a spot to live where I can own one - and after setting this up and turning it on for the first time, I completely understand why these were not allowed in apartments. It gets loud, and it does so very easily. With the settings about in the middle, you can easily get the lovely “feel it in your chest” vibrations only a good sub can deliver. My cats have decided it is their new favorite place to lay, as the vibrations must mimic the vibrations from purring. Set up was super easy, and the instructions were clear. All in all I would buy it again, and if I'm ever in the position to need 2 I would match this one without a second thought.

Review from klipsch.com
Helpful?70R8EPCJUPWI5223584965
Dec 17, 2022
Kirk from Okeana
5 out of 5 stars review

Seller Verified Purchase

Plenty of rich bass

Not sure about a subwoofer? This one has full, rich sound at low and high volume levels. Feel the action and the music, don't just hear it.

Review from klipsch.com
Helpful?70R8EPCJUPWI5223584965