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

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

Name: Klipsch - R-121SW Reference Series 12" 400W Powered Subwoofer - Black
Brand: Klipsch
SKU: 6501481
Price: 584.99 USD
Availability: InStock
Rating: 4.8 (578 reviews)

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Type: Subwoofers

Model: 1070408

SKU: 6501481

$584.99 ~~$649.99~~ Save $65.00 (10%)

Available in stock

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.

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

$584.99 ~~$649.99~~

Highlights

Speaker Type : Floorstanding , see in specifications
Minimum Frequency Response : 120Hz , see in specifications
Maximum Frequency Response : 28 kHz , see in specifications
Number of Speakers : 1 , see in specifications
Peak Power Handling : 400 W , see in specifications
RMS Power : 200 W , see in specifications
Tweeter Size : 1" , see in specifications
Enclosure Type : Bass reflex , see in specifications

Specifications

General

Brand	Klipsch
Model Number	1070408
Product Name	R-121SW Reference Series 12" 400W Powered Subwoofer
Product Width	16 inches
Product Depth	19.7 inches
Product Height	16.6 inches
Product Weight	35 pounds
Warranty - Parts	Five Years
Warranty - Labor	Five Years

All specifications (35)

Key specs

High Resolution Audio	Yes
Wireless Multi-Room Audio	No
Audio Only Inputs	No audio only inputs
Color	Black
App Compatible	No
Speaker Connectivity	Wired
Tweeter Material	Titanium
Maximum Frequency Response	28 kilohertz
Speaker Type	Floorstanding
RMS Power	200 watts
Speaker Wire Connection Type	RCA
Enclosure Type	Bass reflex
Speaker Wire Included	No

Other

Peak Power Handling	400 watts
Minimum Frequency Response	120 hertz
Midrange Type	Cone
Woofer Type	Cone
Number of Speakers	1
Tweeter Size	1 inches
Driver Size	12 inches
Number of Woofers	1
Woofer Size	12 inches
Network Connector(s)	No network connectors
Indoor Or Outdoor Use	Indoor
Woofer Material	Cerametallic
ENERGY STAR Certified	No

Features

New technology and cleaner bass Revamped 12” spun-copper thermoformed crystalline polymer woofers make the latest Reference subwoofers exceptionally light while providing low frequency response, minimal cone breakup, and degradation-free distortion.
All-digital amplifier The built-in, all-digital amplifier delivers ample power with high efficiency and true-to-source accuracy in reproduction, ensuring maximum efficiency for best-in-class output, detail, and power.
Fron-firing driver The built-in, all-digital amplifier delivers ample power with high efficiency and true-to-source accuracy in reproduction, ensuring maximum efficiency for best-in-class output, detail, and power.
Low pass crossover and phase comtrol Ensures the subwoofer’s low-frequency tones blend with other Klipsch speakers and establish your ideal level of bass.
Line LFE inputs Reference subwoofers are compatible with your home theater receiver, no matter the make and model.
MDF cabinet with scratch-resistant, textured wood grain vinyl Stylish aesthetic with absolute durability that results in a seamless integration into any décor.
High quality cabinet design Reinforced 3/4" MDF construction with all-new bracing design reduces cabinet vibration for less audible coloration and improved sonic accuracy.
Low profile grille Adds refined look that is accoustically transparent.

Customer reviews

4.8

out of 5

578 customer reviews

Most recent 10 reviews

Bass!!!
Absolutely worth the money! Best quality you can buy for a home theater experience. Picks up all necessary signals in music and movies.
GABRIELRSep 12, 2026
Great subwoofer
First time klipsch customer would highly recommend this subwoofer for a starter sub or even to upgrade this thing rattles my whole living room and kitchen
GEORGECSep 4, 2026
Good while it worked
I bought this in December 2025 and it worked great until last week. Not working anymore. 2nd kliptsch sub that has gone bad in the last year for me. I have a 5 speaker set and all the other speakers are still working great. Inly subwoofers seem to fail for klipsch in my experience. This one is covered last one best buy cancelled my total tech because i had to switch cards for autopay and stole my money. Hopefully they honor it this time. Sad part is peopme at the store wanted to help but corporate ripped me off.
NikodogAug 26, 2026
A fabulous subwoofer
I am so happy with this purchase!!! It changed the sound of my whole system!!
RALPHGAug 24, 2026
Amazing sound
Deep bass and loud thumps with this great subwoofer
ALEXKAug 21, 2026
Almost best in price range
The subwoofer is powerful and plenty of bass for living room / causal movie watching. Bass is punchy and does not feel underpowered.
StormtrooperJul 26, 2026
Get this bad boy!
This subwoofer is awesome! I only have the gain turned up halfway sounds amazing deep bass and easy to hook up, worth every penny
MitchellBJul 24, 2026
Sub woofer
Great product, I love klipsch products always work just like supposed to.
HEATHAJul 22, 2026
Great sound
Great sound quality at a reasonable price point always been a good lineup of subwoofers
DreSkullJul 18, 2026
Awesome subwoofer!
I bought this to complete my home theater system and was blown away by the sound. Even on the lowest setting it delivers amazing bass. It definitely rocks!
TOMMYWJul 17, 2026