Get earthshaking bass with the all new Next Gen Klipsch Reference subwoofer. The 12-inch spun-copper woofer produces rich, detailed base from the top to the bottom of the frequency response range from 28Hz to 120Hz. The all-digital amplifier in this Klipsch Reference II subwoofer provides a peak of 400W for powerful bass with a max output of 118dB.
Q: Does this subwoofer have a built-in amplifier?
A: Yes, the Klipsch Reference subwoofer has a built-in, all-digital amplifier.
Q: What type of inputs does the subwoofer have?
A: This subwoofer has line LFE inputs for compatibility with various receivers.
Q: What is the frequency response range of this subwoofer?
A: The Klipsch Reference subwoofer has a frequency response range of 28Hz to 120Hz.
Q: How much does the subwoofer weigh?
A: This subwoofer weighs 35 pounds.
Q: What is the peak power handling of this subwoofer?
A: The peak power handling of this subwoofer is 400 watts.
A: The R-121SW features a new cabinet design and an enhanced woofer. This subwoofer sports a larger cabinet allowing for a higher maximum acoustic output. The new woofer material allows the R-121SW to deliver a lower frequency response with less chance of distortion.
Q: Does it come with the LFE cable?
A: Unfortunately it does not come with a LFE cable. However, this is one amazing sub! Wouldn't let the lack of a cable keep me from having it!
Q: R-800 F and R-121SW What set up do you recommend to Use with this 2.1 set up?
A: In terms of what crossover I would recommend, I suggest a crossover of 80-100Hz for the R-800F. This will accentuate the mid-high frequencies in the tower and allow the subwoofer to handle those low frequencies!

Get earthshaking bass with the all new Next Gen Klipsch Reference subwoofer. The 12-inch spun-copper woofer produces rich, detailed base from the top to the bottom of the frequency response range from 28Hz to 120Hz. The all-digital amplifier in this Klipsch Reference II subwoofer provides a peak of 400W for powerful bass with a max output of 118dB.

Relish the immersive audio experience created by this Klipsch Reference II subwoofer. The spun-copper injection-molded-graphite subwoofer and built-in digital amplifier provide high-volume bass free of distortion, while its 29 to 120Hz frequency response lets you enjoy an extensive range of sound. The 12-inch height and brushed polymer-veneer finish on this 400W Klipsch Reference II subwoofer enhance the look of your entertainment setup.

The high-performance Klipsch Reference Premiere series subwoofers are hyper-efficient with the optimal balance of amplifier power, driver capability and cabinet volume. Reference Premiere subwoofers achieve maximum low frequency extension with great output, accuracy and speed.

Set the mood in your home via music with these Klipsch speakers. The wood-grain vinyl exterior imparts a touch of sophisticated elegance to a room, while the Tractrix Horn technology provides clear, vibrant and rich musical tones. The titanium tweeter on these Klipsch speakers dampens high-frequencies to facilitate crisp, natural sound.
| Pros for Klipsch - R-121SW Reference Series 12" 400W Powered Subwoofer - Black | |||
|---|---|---|---|
| Sound Quality, Bass, Size, Power, Ease of use | There were no pros for this product— | Sound Quality, Bass | Sound Quality, Bass, Size, Price, Appearance |
Customers express satisfaction with the Reference Series 12" 400W Powered Subwoofer, particularly highlighting its excellent sound quality and powerful bass. Users appreciate its ease of use, convenient size, and simple setup. The subwoofer's power and design also receive positive feedback, with many noting its great value for the price.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
I have had Klipsch front, center, and rear speakers for years. But I had a sub speaker box with 2 12" JBL Bass speakers, so never got the Klipsch sub. I thought my system sounded great. As a former professional bassist who worked and recorded with Grace Slick and Michael Bolton, I truly value great bass, and I thought I had it! My slave amp finally died and the 2 12" went with it. So I decided it was time to get a new sub, and I picked the Klipsch Powered 12". The moment I hit the "send" button with my order I felt maybe I had made a mistake. It isn't cheap! As an author with a published book on communication, I loved the contact I had with Best Buy. From acknowledgement to delivery, they kept me informed. I never wondered what was going on with my order. Then the driver arrived with my delivery. I was ready with my phone to take a picture of the damaged box, but it was pristine. Since I had wiring for my old equipment, hookup took seconds. Not only does it look sleek, but I have never heard better low end in a system. Music- awesome! Movies- thunderous when the action explodes. I am shocked. Wasted years not knowing I had inferior equipment are now over! It sits under an artistic display, and blends perfectly!
Posted by user625836
Beautiful sound, paired with a Sony receiver. The Sony wireless subwoofer (sw5) has good lows but on concrete it doesn’t carry well. This subwoofer does both effortlessly. The demos won’t show you want you want. You will 100% be happy with your purchase, I’ve been looking for a subwoofer for my home theater that gives you the feel of a theater experience and this definitely supplies it. Now I can finish my walls and get this flush mounted and permanent
Posted by JaredW
As soon as you start shopping for a subwoofer, you’re inundated with numbers, specifications, and opinions, and none of them are very helpful. If you’re considering a Klipsch subwoofer, chances are you don’t live in your grandma’s basement and spend all of your spare time online arguing with strangers about $200,000 speakers you’ll never be able to afford. Im not an audiophile and you’re probably not either. If you ever want to feel good about your life choices, spend an hour reading about audio grade capacitors in any of the dedicated audio forums. It’s painful. While not an audiophile, I am a music lover and love watching movies with a powerful audio system. I’ve owned 4 home theater in a box systems and they all left me underwhelmed. They take a low power amplifier and pair it with several tiny satellite speakers and throw in an anemic subwoofer that needs to be turned up to its maximum level to even know it’s on. If you mainly listen to music, then this might not ever be a problem but movies will quickly reveal a subwoofer pushed to its limit. It doesn’t really matter what kind of electronic device you’re using, if you run it at maximum output all of the time, it’s heating up and working hard. Heat is the enemy of all electronics and it’s life is shortened. Having headroom is really important. What I really like about this particular Klipsch subwoofer is it adds headroom that allows me to turn down my other two subwoofers and set the crossover lower on my sub that extends below 20Hz. I believe that this Klipsch is rated to extend to 23Hz but at that point it’s at the extreme end of the curve and it just lacks the power. It’s outstanding at filling typical low frequencies so my other doesn’t need to waste power filling them. While I don’t currently have room correction software or a DSP to automatically adjust each speaker, I do use an SPL meter to adjust all of my speakers. This Klipsch only needs to have its volume set in the 6 oclock position or its halfway point to be balanced. I’m using the LPF built into my receiver so the crossover on the speaker isn’t used. It’s important to use one or the other, not both. It’s also important to use shielded cables so that interference isn’t added to the signal. You don’t need to spend a fortune on cables. You can even build them yourself for custom lengths. They just need to be shielded. I’d also suggest to plug in all of your audio and video components into the same power strip. By using shielded cables, you will eliminate any low hum sounds and by using the same power source you eliminate ground loop issues. Ground loop is really frustrating but easy to fix. I’m embarrassed to say I struggled with GL for several years and bought several commercial “fixes” that didn’t work. Plug them in the same place. It’s free. There’s literally hundreds of subwoofers at this price point and some of them are great but like most people, you don’t have the time or money to buy and test each one in your system. Some are terrible. I’d even venture to say most are terrible. Klipsch integrates well into existing systems but it is also a great stand alone unit. I spent significantly more for my other subwoofers and they are simply on another level but I’m more than satisfied with this subwoofer on tonal and output qualities alone. The value is really the most remarkable thing about this sub. It’s been in my system now for nearly a month and I’m extremely impressed at what it adds for under $400. Klipsch truly dominates the market at this level and for good reason. I hate being cliche but this subwoofer is a bargain. It’s that simple.
Posted by JoshuaD