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🎶 Feel the bass, own the room — Klipsch R-121SW, where power meets precision.
The Klipsch Reference R-121SW is a 12-inch front-firing subwoofer featuring a revolutionary spun-copper thermoformed crystalline polymer woofer that delivers deep, distortion-free bass. Powered by a 400W all-digital amplifier, it offers high efficiency and true-to-source sound accuracy. With low-pass crossover and phase controls, it seamlessly integrates with other Klipsch speakers, while versatile inputs ensure compatibility with most AV receivers and TVs. Perfect for home theaters and music lovers seeking premium bass performance and flexible placement.






| ASIN | B09P8WJTB3 |
| Additional Features | Digital Amplifier |
| Antenna Location | For Televisions |
| Audio Driver Size | 12 inches |
| Audio Driver Type | Bass Driver |
| Audio Output Mode | Surround |
| Best Sellers Rank | #20,373 in Electronics ( See Top 100 in Electronics ) #25 in Home Audio Subwoofers |
| Brand | Klipsch |
| Built-In Media | Speaker |
| Color | Black |
| Compatible Devices | Television |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | Bluetooth |
| Connectivity Technology | Speaker Wire |
| Control Method | Touch |
| Controller Type | Touchpad |
| Customer Reviews | 4.8 out of 5 stars 217 Reviews |
| Enclosure Material | Copper |
| Frequency Response | 120 hertz |
| Is Waterproof | False |
| Item Dimensions D x W x H | 19.7"D x 16"W x 16.6"H |
| Item Weight | 34.2 pounds |
| Manufacturer | Klipsch |
| Model Name | R-121SW |
| Model Number | R-121SW |
| Mounting Type | Floor Standing |
| Number Of Circuits | 1 |
| Number of Audio Channels | 5.1 |
| Number of Items | 1 |
| Number of Power Levels | 1 |
| Power Source | Corded Electric |
| Series Number | 12 |
| Speaker Maximum Output Power | 400 watts |
| Speaker Size | 12 inches |
| Speaker Type | Subwoofer |
| Specific Uses For Product | Television, Home Theater, Movie Theater |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 12 inches |
| UPC | 743878046786 |
| Unit Count | 1 Count |
| Warranty Description | 5 year manufacturer |
| Warranty Type | Limited |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | Bluetooth |
| Woofer Diameter | 12 inches |
R**O
Excellent Sound and Incredible Value
I recently purchased the Klipsch subwoofer featuring the revamped Spun-Copper Thermoformed Crystalline Polymer (TCP) woofer, and I’ve been extremely impressed. I actually replaced a more expensive subwoofer with this Klipsch, and I was surprised by how well it performs for the price. The bass is deep, clean, and powerful without sounding muddy or overwhelming. The build quality is excellent, and the spun-copper woofer gives it that distinctive, high-end Klipsch look. What impressed me most is the overall value. You’re getting the sound, performance, and build quality I would normally expect from a considerably more expensive subwoofer. If you’re looking for strong, clean bass without spending a fortune, this Klipsch is an excellent choice. Great product, great quality, and an outstanding value for the money. Highly recommended!
P**B
Fills in sound in a large room.
Setup: Marantz Cinema 60 feeding two Klipsch Reference floor standing speakers, plus a center channel Klipsch under the TV. Always felt there was some depth missing, probably due to quite a large, irregular space consisting of living room, dining room, and open kitchen. High ceilings. This sub filled in the sound beautifully. Didn't go for the larger sub since I'm not generally cranking hip hop or whatever baloney passing for music these days. For movies, rock n roll, and music where people actually play instruments, this sub is the bee's knees. Easy to hook up, too.
J**F
Lightweight, good performance, rumbles the lows but with control
I don't have the world's best back so the light weight of this subwoofer relative to its size and performance was appealing. It has good extension and can reproduce quite low frequencies, though its EQ has a hump at about 55hz. You can EQ that out or just enjoy it, nobody is going to make you stop! Group delay is good for its size and rear-ported construction as well, better even than some vaunted performers in its on sale price range. Ample dynamic range for cinematic low frequencies and when dialed in, it has a lively and relatively quick low frequency reinforcement for music as well. I pair mine with Klipsch RP-600m (first gen, love them) and set the crossover to reinforce from about 60hz down. Its loudness has been more than enough for my space, it can overwhelm the living room it is in when movies rumble! Feel it moving that low low air into the kitchen and other rooms even. But, to be maximally fair, if you are in a very large room you might want to consider a larger diameter speaker model or perhaps a higher output unit. I've had zero complaints about it's output but it is somewhat conservative compared to the Reference Premiere subs and some competitors, and it has rock solid DSP limiting that stops it from exceeding its capabilities. In my personal use even with bass impact action films I have not met its limits!
A**R
Impressive
I had just returned a more premium branded sub that cost 3 times as much. This blows that out of the water! Definitely worth it. I was highly surprised. Has plenty of power and sound is deep and rumbling like thunder.
S**5
Great subwoof
Great sounding speaker replaced the very old one I had this one is superior
S**E
Excellent value
Absolutely solid subwoofer for the price. Couldn't be happier with the performance
D**W
Good sounding powered sub.
This is very boomy, but I like the ability to turn it up and down separately from the receiver. This is my first powered sub, so keep that in mind. I've only used passive subs before this. The auto-on setting is a bit laggy, but the sub works well once it turns on. It is especially slow to turn on at lower volumes. I can live with it for the sound quality. If you put it somewhere you can easily access the back, it can be turned on manually to speed up the process. Also, the volume and crossover knobs are in the same area, so easy access might be important. If it didn't take so long to get a signal strong enough and long enough to turn it on automatically, I'd give this 5 stars. Don't forget to buy a cable to connect it to your receiver.
R**G
Boom
Sounds great. Room shakes
J**A
Best sub I ever had so far
Thank you Klipsch, very very powerful sub best I ever had. Budgeting for a second one
K**D
High Power Bass for Home Theatre or Stereo Systems
Great product I have four of them ✔️
E**O
Excelente produto
Estou usando esse subwoofer em uma sala de 40m2. Ele tem a presença do subgrave muito nítida e forte. Mesmo em volumes baixos. Toca muito bem, subwoofer de impacto, muito top mesmo.
高**之
故障してたので、返品した。
故障してたので、返品した。
D**O
Grave absurdo
Linda caixa, com potência e clareza excelentes. Preencheu o som da sala perfeitamente. Vale a compra!
Trustpilot
1 week ago
2 months ago