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

SKU: KP1070408 MFR: 1070408
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Key Features

  • Experience deep bass with the Klipsch 12" powered subwoofer, enhancing your home theater.
  • Enjoy powerful, room-filling sound from this compact subwoofer with a 400W peak amplifier.
  • The spun-copper TCP woofer delivers clear, accurate low frequencies for immersive audio.
  • Easily connect via RCA jacks; this Klipsch subwoofer integrates seamlessly into your system.
  • Fine-tune your audio with adjustable low-pass filter and phase controls for optimal sound.
  • Feel the rumble with a frequency response down to 28Hz, adding depth to music and movies.
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Questions & Answers

Reviews about this item

Review Summary

2024-08-02T20:00:00

Rated 5 out of 5

awesome subs

these subs are awesome, i bought 2 of them and paired them up with a set of the fives heritage series, set the subs to where it sounds well balances, everything is connected to my computer using skw optical cables to the fives and each subs is using skw subwoofer cables. If i could figure out how to get a picture to post in this review i would.

taha

2024-07-14T20:00:00

Rated 5 out of 5

Big bass and clean

These subwoofer will make my whole living room shake, had to turn it down. Very nice bass and best when matched to Onkyo receiver.

C4 A.

2024-06-11T20:00:00

Rated 5 out of 5

I suprise this guality

Subwoofer works well at all frequencies with the kd 400 active speakers the high sounds of the active speakers are good the built-in amplifier is great room scaling technology guarantees perfect conditions for speakers I've been musical all my life hobby based I have been really surprised by this quality I could say that it is as good as Geneleg's speakers I warmly recommend it to everyone who is interested in music you can also listen quietly with the speakers without disturbing neighbors because you can set optimal level bass and sound listening I like to listen to music with good sound quality not because it's just bass banging for this package you need sub y cable, this is not say the store Remimber this,y cable is not pay haevy price 30e/30dollar maybe And this cable give all guality out this speakers All the best to you who read this Jesus is good Best regards: Miikka to Finland

Miikka

2024-05-02T20:00:00

Rated 5 out of 5

Added to a much more expensive system and happy!

You need eq capabilites and its far from perfect. But for the price it makes compromises in the exact right places if you value just nice, clean, tight, light and powerful bass its very good. And it looks great too!

Sexymanspin

2024-05-01T20:00:00

Rated 5 out of 5

They work and sound as expected

It's lighter than the non ported K's I had before, and sound the same

BobRR

2024-04-26T20:00:00

Rated 5 out of 5

Really Good

The subwoofer is a little big but the sound is impressively good

Samy

2024-04-26T14:55:09

Rated 5 out of 5

A true movie experience without going to the theater.

The R-121SW 12" 400W Powered Subwoofer gives you a true movie going experience. Sounds phenomenal and looks elegant. You can't go wrong with with this one.

TOMMY W.

2024-01-29T19:00:00

Rated 5 out of 5

Shakes kitchen glassware as expected

Bought this sub to supplement my R-40PM's. I'm still playing with the gain/crossover configuration, but the base travels and has a great punch. This will certainly shake your kitchen glassware and knock you out if you turn it up! I got the y-splitter cable to connect the sub to the speakers because I guess you can get better (double?) output..from one novice audiophile to another.

ajay

2023-12-19T19:00:00

Rated 5 out of 5

R-121SW

A deep bass that fills the entire room. You can feel the crisp and clear sound in your ears and chest. Great speaker.

Adam D.

2023-12-19T19:00:00

Rated 1 out of 5

Buyer beware on refurbished equipment.

I bought a refurb subwoofer May of 2023. The amp went bad around September 2023 so I contacted support. Initially they told me they would refund me because they didn't have a replacement product. Then they came back and said the warranty was only 90 days (really fine print) and there was nothing they could do. Really disappointing to throw away money on a product that only lasted 4 months and I never pushed it pass half volume. I inquired again to see if they had replacement parts as all I wanted was the amp so I could replace it myself. The responded with the following: "Hello, Thank you for contacting Klipsch! We no longer carry the original R-12SW amplifiers, but an amp from the newer R-120SW is functionally identical and can be used as a direct replacement. Part number and pricing below. 1066491 R-120SW Replacement Amp Kit NA/EUA/AUS (With Black Screws) - $170.20/ea If you wish to order, you can contact us at 800-554-7724, Option 1, between 8A.M.-5P.M. (EST) Monday-Friday. Please refer to your ticket number (571636) when you call to order. Don't hesitate to reach out if you need further assistance."

Squinton

2023-12-16T19:00:00

Rated 5 out of 5

An outstanding sub

The bass is fantastic, it sounds great with music, movies and gaming. It blends well with my two R-820F towers, R-34C center and the pair of RP-502S speakers.

Stupot1036

2023-12-16T19:00:00

Rated 5 out of 5

SUB'S

I wanted the 10 inch for tight sound, to my surprise the 12's are great.

Vance

2023-12-13T19:00:00

Rated 5 out of 5

Boom!

Received very quickly and in great shape. Hooked it up and Wow! We have been w/out a Subwoofer for years and the R-121 delivered in a big way. Great sound and there has been some heavy bass put through it. Also appreciated that this product is made in the USA ???? Very happy with purchase.

Emilz66

2023-12-13T19:00:00

Rated 5 out of 5

Great Subwoofer

Very pleased with the subwoofer. Strongly considering getting a second one. Rattles my basement and it's not past halfway up on the gain.

Mzspen78

2023-12-12T19:00:00

Rated 5 out of 5

Go with the woofer you won't be sorry.

The addition of the woofer really enhances the sound. It makes the system complete.

Tank

2023-12-11T19:00:00

Rated 5 out of 5

Awesome subs!!

These subs are great ,i cant imagine having more bass than these two R-121SW 's produce, they hit hard for sure . I love them.

R M.

2023-12-10T19:00:00

Rated 4 out of 5

Finally big bass,,,

No doubt a very fine subwoofer. It adds bass where I needed it. A small problem of finding the correct setting to prevent low frequency vibrations at times when little bass is needed.

Charlie P.

2023-12-08T19:00:00

Rated 5 out of 5

Fantastic subwoofer!

I have been very impressed with the performance of this subwoofer in the short time that I've had it already. Very clear, powerful bass that can fill the entire 2k sqft house with sound at only half power if desired, but it still pairs very well with the R50M bookshelf speakers without overpowering them.

Yeff

2023-12-05T19:00:00

Rated 5 out of 5

Great Bass for the Money

First big purchase I've made for a subwoofer and I'm floored by the oomph it gives to my music. Paired with some reference bookshelves, it gets the job, and more, done! I absolute love it.

BOONEEMAN

2023-12-05T19:00:00

Rated 4 out of 5

Base Box

Great sound and base. Easy to connect to other equipment. Nice fit and finish

Hiltz

2023-11-22T19:00:00

Rated 5 out of 5

This thing thumps!!

Added so much dimension to my existing system, can't believe I waited so long to order this. It's paired with 2 x R-605FAs, an R-30C, and a pair of R-40PMs.

Imwildemike

2023-11-19T19:00:00

Rated 1 out of 5

Sounded Great when it worked.

I bought a certified factory refurbished subwoofer in May 2023. The amplifier went out October 2023 and Klipsch is telling me they do not have a replacement and the refund date has passed. I have purchased many Klipsch products over the years so their response is really disappointing.

Sean Q.

2023-11-17T19:00:00

Rated 5 out of 5

Great Sub and Great Value

I just received the R-121SW subwoofer and am very impressed with the performance and the Black Friday price was fantastic! Just a really great value!

muley

2023-11-11T19:00:00

Rated 5 out of 5

R-121SW (Wow)

Not only does the Subwoofer sound incredible! Customer Service was Excellent, Friendly and helpful! Thanks

Reckert

2023-10-25T20:00:00

Rated 1 out of 5

Klipsch...what else needs to be said.

Title says it all!! Great speaker...rich bass sound.

Southlakematt

2023-08-17T20:00:00

Rated 5 out of 5

Great Thumping

Nice and clean bass. Very happy with the purchase.

Woof

2023-08-16T20:00:00

Rated 5 out of 5

It hits

Bought this on sale, with the RP-500M2's. It fills in the bottom nicely, without overpowering the 500's. It shakes my entire living room. The 500's are paired an Emotiva BasX 2 and it helped to really bring the 500's forward. Very happy with the sub, overall. Absolutely worth what I paid for it.

Christopher W.

2023-08-16T20:00:00

Rated 5 out of 5

It hits

Bought this on sale, with the RP-500M2's. It fills in the bottom nicely, without overpowering the 500's. It shakes my entire living room. The 500's are paired an Emotiva BasX 2 and it helped to really bring the 500's forward. Very happy with the sub, overall. Absolutely worth what I paid for it.

Pops

2023-08-15T20:00:00

Rated 4 out of 5

Great bang for my buck

Upgraded from the eight inch Klipsch subs. Got two 12 inch subs. Massive improvement. Great piece

Nicker

2023-08-14T20:00:00

Rated 5 out of 5

The best wireless subwoofer

I got this subwoofer as a 2nd sub and it works great! I love the wireless so take it out on the patio or anywhere inside. Supreb...

J C.

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Klipsch R-121SW Specifications

  • Finishes

    Black Textured Wood Grain Vinyl

  • Frequency Range

    28Hz - 120Hz

  • Maximum Acoustic Output

    118 dB

  • Amplifier

    All Digital

  • Amplifier Power (Cont/Peak)

    200W/400W

  • Amplifier Features

    Volume, Low-pass, 0/180 phase, Auto Power On

  • Driver Components

    12" (304.8mm) High excursion spun-copper TCP woofer

  • Enclosure Material

    MDF

  • Enclosure Type

    Bass-Reflex via rear-firing port

  • Inputs

    Line level/LFE RCA jacks

  • Dimensions (H x W x D)

    16.6 x 16 x 19.7" (421 x 406 x 500mm)

  • Weight

    35 lbs (16kg)

  • UPC Code

    743878046786

About Klipsch R-121SW

FEATURED REVIEWS

Works awesome

By Chris00

I always wanting to update my home theater system and the Klipsch brand has been a brand that I trust and know they have great products. This R-121SW subwoofer has been a nice upgrade from my previous one. We have it with a projector that we use as a home theater and it really brings out the bass nicely for movies, tv shows, music, etc. I would recommend to have high quality speakers to match this subwoofer to get the most out of it. It was easy to get up and going and overall have enjoyed it...

View full Review

Best Sub for the money

By REarley

What a difference! Replaced an older subwoofer with the R-121SW. No comparison to the level of bass and detail.

Explore the sonic depths with the Klipsch Reference R-121SW 12" 400W Powered Subwoofer, a high-quality audio equipment designed to elevate your home theater experience. This powerful subwoofer is engineered with new tech for cleaner, deeper bass, featuring revamped spun-copper thermoformed crystalline polymer woofers. These woofers are exceptionally light, ensuring low frequency response, minimal cone breakup, and degradation-free distortion for a sound that's as true-to-source as possible.

The built-in, all-digital amplifier of this Klipsch subwoofer delivers ample power with high efficiency. It ensures true-to-source accuracy in reproduction, providing best-in-class output, detail, and power. The high-performance 12" front-firing driver offers deep bass and flexible room placement, making it a versatile addition to any home theater setup.

The Klipsch Reference R-121SW subwoofer boasts a highly durable and stylish cabinet design, seamlessly integrating into any decor. With scratch-resistant, reinforced 3/4" MDF construction and an all-new bracing design, this subwoofer is built to reduce vibration and withstand the test of time. The front-mounted LED power indicator and low-profile grille add to its aesthetic appeal while maintaining acoustic transparency.

This compact subwoofer also features a low pass crossover and phase control, ensuring the subwoofer's low-frequency tones blend harmoniously with other Klipsch speakers. This helps establish your ideal level of bass, enhancing the overall sound quality of your system. With line/LFE inputs, the Klipsch Reference subwoofers are compatible with any home theater receiver, regardless of the make and model. Experience the powerful, high-quality sound of the Klipsch Reference R-121SW 12" 400W Powered Subwoofer and transform your home theater system.

Klipsch R-121SW Features

  • Spun-Copper Thermoformed Crystalline Polymer (TCP) Woofers
  • All-Digital Amplifier
  • Front-Firing Driver
  • Low Pass Crossover And Phase Control
  • Line/LFE Inputs
  • MDF Cabinet With Scratch-Resistant, Textured Wood Grain Vinyl
  • High Quality Cabinet Design
  • Front-Mounted LED Power Indicator
  • Low Profile Grille

Product Documents

User Manual

Key Features

  • Experience deep bass with the Klipsch 12" powered subwoofer, enhancing your home theater.
  • Enjoy powerful, room-filling sound from this compact subwoofer with a 400W peak amplifier.
  • The spun-copper TCP woofer delivers clear, accurate low frequencies for immersive audio.
  • Easily connect via RCA jacks; this Klipsch subwoofer integrates seamlessly into your system.
  • Fine-tune your audio with adjustable low-pass filter and phase controls for optimal sound.
  • Feel the rumble with a frequency response down to 28Hz, adding depth to music and movies.

What's in the box:

  • Klipsch Reference R-121SW 12" 400W Powered Subwoofer (Black)
  • Klipsch 2 Year Limited Warranty