21 inch subwoofers
Best Buy customers often prefer the following products when searching for 21 inch subwoofers.
Browse the top-ranked list of 21 inch subwoofers below along with associated reviews and opinions.
Polk Audio - 12" 200W Powered Subwoofer - Black Washed Walnut
Model: HTS12 SUB BLKSKU: 6170709Top comment"I made a lot of research, listened to lot of subwoofers and eventually bought a 100W Klipsch subwoofer. ...This is my second purchase of this Polk subwoofer it’s an incredible product...Two subwoofers are better than one !!...Great Subwoofer."
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Upgrade your home theater with this Polk Audio subwoofer. The front-firing 12-inch driver maximizes linearity to deliver thumping, clean bass, and the floor-firing design of the Power Port minimizes distortion, turbulence and port noise. The built-in controls of this Polk Audio subwoofer provide access to volume, phase correction and the low pass filter.Top comment"I made a lot of research, listened to lot of subwoofers and eventually bought a 100W Klipsch subwoofer. ...This is my second purchase of this Polk subwoofer it’s an incredible product...Two subwoofers are better than one !!...Great Subwoofer."
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Upgrade your home theater with this Polk Audio subwoofer. The front-firing 12-inch driver maximizes linearity to deliver thumping, clean bass, and the floor-firing design of the Power Port minimizes distortion, turbulence and port noise. The built-in controls of this Polk Audio subwoofer provide access to volume, phase correction and the low pass filter.See all Subwoofer Speakers
Bowers & Wilkins - 600 Series 8" 200W Powered Subwoofer - Matte Black
Model: B&W ASW608-BLACKSKU: 6290726Top comment"Great subwoofer...It is relatively small in size compared to other subwoofers. Definitely worth the value....One of the best subwoofers on the market! Hits every tone perfect"
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Increase your bass volume with this Bowers & Wilkins active subwoofer. It has a 200W amplifier that keeps the unit cool through long, loud music sessions, and the paper pulp, Kevlar and resin bass driver diaphragms are tough enough to withstand heavy vibrations. This Bowers & Wilkins active subwoofer has a 200mm driver that allows airflow for high-quality output.Top comment"Great subwoofer...It is relatively small in size compared to other subwoofers. Definitely worth the value....One of the best subwoofers on the market! Hits every tone perfect"
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Increase your bass volume with this Bowers & Wilkins active subwoofer. It has a 200W amplifier that keeps the unit cool through long, loud music sessions, and the paper pulp, Kevlar and resin bass driver diaphragms are tough enough to withstand heavy vibrations. This Bowers & Wilkins active subwoofer has a 200mm driver that allows airflow for high-quality output.See all Subwoofer Speakers
Klipsch - Reference Series 10" 150W Powered Subwoofer - Black
Model: R-101SW II 1070404SKU: 6501479Top comment"Powerful subwoofers...The sound of these subwoofers is deep and wonderful. I recommend them....Klipsch Reference 10" Subwoofer...One of the best subwoofers I have ever owned. This new model is much improved with a smooth deep rich sound,"
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Get earthshaking bass with the all new Next Gen Klipsch Reference subwoofer. The 10-inch spun-copper woofer produces rich, detailed base from the top to the bottom of the frequency response range from 32Hz to 120Hz. The all-digital amplifier in this Klipsch Reference II subwoofer provides a peak of 300W for powerful bass with a max output of 115dB.Top comment"Powerful subwoofers...The sound of these subwoofers is deep and wonderful. I recommend them....Klipsch Reference 10" Subwoofer...One of the best subwoofers I have ever owned. This new model is much improved with a smooth deep rich sound,"
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Get earthshaking bass with the all new Next Gen Klipsch Reference subwoofer. The 10-inch spun-copper woofer produces rich, detailed base from the top to the bottom of the frequency response range from 32Hz to 120Hz. The all-digital amplifier in this Klipsch Reference II subwoofer provides a peak of 300W for powerful bass with a max output of 115dB.See all Subwoofer Speakers
Klipsch - Reference Series 12" 400W Powered Subwoofer - black
Model: 1070408 R-121-SW IISKU: 6501481Top comment"Great subwoofer...Purchased this on cyber Monday as an upgrade to my home theather and all I can say is wow. My old subwoofer was an 8 inch 100 watt sub and what a differance. ...The 12 inch subwoofer is great super powerful."
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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.Top comment"Great subwoofer...Purchased this on cyber Monday as an upgrade to my home theather and all I can say is wow. My old subwoofer was an 8 inch 100 watt sub and what a differance. ...The 12 inch subwoofer is great super powerful."
See all customer reviewsSee all Subwoofer SpeakersProduct Description
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.See all Subwoofer Speakers
Sonance - MS10SUB - Mag Series 10" 275W Powered Cabinet Subwoofer (Each) - Black
Model: 93447SKU: 6360974Top comment"The Powered Subwoofer brings the BOOM! Not as large as I thought would have been. ...Sonance 10” 275W Subwoofer...I purchased two of these Sonance Subwoofers for the 7.2 surround sound system in the house I recently purchased. "
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Enjoy powerful bass in a minimalistic design using this Sonance cabinet subwoofer. The crossover control offers a clear transition of bass frequencies when connected to your main speakers for smoother bass response, while a ground lift switch eliminates most ground noises to minimize distortion. This Sonance cabinet subwoofer features a textured finish and black cloth grille for added durability.Top comment"The Powered Subwoofer brings the BOOM! Not as large as I thought would have been. ...Sonance 10” 275W Subwoofer...I purchased two of these Sonance Subwoofers for the 7.2 surround sound system in the house I recently purchased. "
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Enjoy powerful bass in a minimalistic design using this Sonance cabinet subwoofer. The crossover control offers a clear transition of bass frequencies when connected to your main speakers for smoother bass response, while a ground lift switch eliminates most ground noises to minimize distortion. This Sonance cabinet subwoofer features a textured finish and black cloth grille for added durability.See all Subwoofer Speakers
Amazon - Echo Sub 100W Subwoofer - Charcoal
Model: B0798KPH5XSKU: 6287970Top comment"Great subwoofer...This subwoofer is great. It works beautifully with my Echo Show....Good subwoofer...The subwoofer works great for the size. It would be nice if they made a more powerful version"
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Echo Sub delivers down-firing, 100W deep bass sound through a 6" woofer. Pair with one Echo device to enjoy dynamic music that fills the room. Pair with two of the same Echo devices for rich left/right stereo sound. Simple to set up and use—just plug in, open the Alexa app, and wirelessly connect to your Echo device(s) to control music with your voice. We want you to know - Echo Sub must be paired with a compatible Echo device. Echo Sub is optimized for Echo Studio, Echo Dot 4th Gen, Echo Dot 3rd Gen, Echo 4th Gen, Echo 3rd Gen, Echo 2nd Gen, Echo Show 10 3rd Gen, and Echo Plus 2nd Gen. Currently, stereo pairing, speaker groups, and multi-room music only support music playback over your wireless network, and do not support Bluetooth, 3.5mm AUX in, or TV/video connections. Some Echo devices support different stereo and subwoofer configurations.Top comment"Great subwoofer...This subwoofer is great. It works beautifully with my Echo Show....Good subwoofer...The subwoofer works great for the size. It would be nice if they made a more powerful version"
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Echo Sub delivers down-firing, 100W deep bass sound through a 6" woofer. Pair with one Echo device to enjoy dynamic music that fills the room. Pair with two of the same Echo devices for rich left/right stereo sound. Simple to set up and use—just plug in, open the Alexa app, and wirelessly connect to your Echo device(s) to control music with your voice. We want you to know - Echo Sub must be paired with a compatible Echo device. Echo Sub is optimized for Echo Studio, Echo Dot 4th Gen, Echo Dot 3rd Gen, Echo 4th Gen, Echo 3rd Gen, Echo 2nd Gen, Echo Show 10 3rd Gen, and Echo Plus 2nd Gen. Currently, stereo pairing, speaker groups, and multi-room music only support music playback over your wireless network, and do not support Bluetooth, 3.5mm AUX in, or TV/video connections. Some Echo devices support different stereo and subwoofer configurations.See all Subwoofer Speakers
Definitive Technology - ProSub 800 8" 300-Watt Powered Subwoofer - Black
Model: PROSUB800BLASKU: 7656422Top comment"An excellent and reasonably-priced subwoofer...This cost-effective sub sounds like much larger subwoofers and meets all of my needs for a living room TV sound system. ...I visited the local store to preview some home theater subwoofers. I left the store after a very lengthy stay in the studio room, subwoofer in hand. "
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Learn more about Magnolia Premium Installation Transform your living room into an immersive listening environment with this immensely powerful 8" subwoofer. 300 watts of power and a frequency response of 20-150Hz ensure that movies and music come out sounding deep, rich and impressive.Top comment"An excellent and reasonably-priced subwoofer...This cost-effective sub sounds like much larger subwoofers and meets all of my needs for a living room TV sound system. ...I visited the local store to preview some home theater subwoofers. I left the store after a very lengthy stay in the studio room, subwoofer in hand. "
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Learn more about Magnolia Premium Installation Transform your living room into an immersive listening environment with this immensely powerful 8" subwoofer. 300 watts of power and a frequency response of 20-150Hz ensure that movies and music come out sounding deep, rich and impressive.See all Subwoofer Speakers
Polk Audio - PSW10 10" Powered Subwoofer, 100W Peak Power, Compact Design, Easy Setup with Home Theater Systems - Black
Model: PSW10SKU: 8826112Top comment"Excellent subwoofer...This is an excellent subwoofer. I am using it in a room that is about 18 ft x 18 ft. ...Great Entry Level Subwoofer for music and movies!...I have to admit I have owned various subwoofers from other brands but for this 10 inch sub its a gem that isnt discovered often. "
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Add deep, low-frequency bass impact to your movies and music with Polk's PSW10. This subwoofer is powered by a high-current amplifier producing 50 watts RMS/100 watts clean, dynamic power for loud bass and a wide dynamic range necessary to recreate a life-like home theater experience. Features front-firing 10" composite polymer cone driver that adds depth to your stereo music and provides more bass impact for your sound system. The PSW10 features non-resonant MDF construction with 3/4" baffle and internal bracing for deep bass impact with detail and accuracy. Features flexible inputs and controls like power-saver on/auto switch, independent volume control and a toggle phase switch on the back panel for a cohesive unit. Place the subwoofer on the same side of the room as your system's front speakers for the best performanceTop comment"Excellent subwoofer...This is an excellent subwoofer. I am using it in a room that is about 18 ft x 18 ft. ...Great Entry Level Subwoofer for music and movies!...I have to admit I have owned various subwoofers from other brands but for this 10 inch sub its a gem that isnt discovered often. "
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Add deep, low-frequency bass impact to your movies and music with Polk's PSW10. This subwoofer is powered by a high-current amplifier producing 50 watts RMS/100 watts clean, dynamic power for loud bass and a wide dynamic range necessary to recreate a life-like home theater experience. Features front-firing 10" composite polymer cone driver that adds depth to your stereo music and provides more bass impact for your sound system. The PSW10 features non-resonant MDF construction with 3/4" baffle and internal bracing for deep bass impact with detail and accuracy. Features flexible inputs and controls like power-saver on/auto switch, independent volume control and a toggle phase switch on the back panel for a cohesive unit. Place the subwoofer on the same side of the room as your system's front speakers for the best performanceSee all Subwoofer Speakers
Klipsch - Reference Series 10" 150W Powered Subwoofer - Black
Model: 1065957 R-100SWSKU: 6241801Top comment"Awesome Subwoofer...I bought two of these subwoofers. In the past, I have had other subwoofers, but these are the best so far, and they are reasonably priced. ...Great subwoofer...worth the added expense...Subwoofer rocks...quality construction, so less hum and distortion than cheaper subwoofers."
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Get earthshaking bass with this Klipsch Reference II subwoofer. The 10-inch spun-copper woofer produces rich, detailed base from the top to the bottom of the frequency response range from 32Hz to 120Hz. The all-digital amplifier in this Klipsch Reference II subwoofer provides a peak of 300W for powerful bass with a max output of 112dB.Top comment"Awesome Subwoofer...I bought two of these subwoofers. In the past, I have had other subwoofers, but these are the best so far, and they are reasonably priced. ...Great subwoofer...worth the added expense...Subwoofer rocks...quality construction, so less hum and distortion than cheaper subwoofers."
See all customer reviewsSee all Subwoofer SpeakersProduct Description
Get earthshaking bass with this Klipsch Reference II subwoofer. The 10-inch spun-copper woofer produces rich, detailed base from the top to the bottom of the frequency response range from 32Hz to 120Hz. The all-digital amplifier in this Klipsch Reference II subwoofer provides a peak of 300W for powerful bass with a max output of 112dB.See all Subwoofer Speakers
Sony - Core Series 10" 115W Active Subwoofer - Black
Model: SACS9SKU: 5721005Top comment"Subwoofers really good...Decent subwoofer especially when you have 4 of them...Awesome subwoofer!!...Added this subwoofer to my system! Now I have two subwoofers and they sound great."
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With 115W maximum power and a 10" dual-layer mica woofer diaphragm, this Sony Core Series SACS9 active subwoofer produces robust, detailed bass tones. Motion feedback technology promotes optimal signal clarity.Top comment"Subwoofers really good...Decent subwoofer especially when you have 4 of them...Awesome subwoofer!!...Added this subwoofer to my system! Now I have two subwoofers and they sound great."
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With 115W maximum power and a 10" dual-layer mica woofer diaphragm, this Sony Core Series SACS9 active subwoofer produces robust, detailed bass tones. Motion feedback technology promotes optimal signal clarity.See all Subwoofer Speakers
Shopping ideas related to 21 inch subwoofers
- 13 inch subwoofers
"The SVS 13” subwoofer is great for music and movies. We bought one at first but added another to add more sound effects to movies"
- 16 inch subwoofers
"I can run my 2 pb2000's full volume tuned and them not be as loud as the 16 ultra. The 16 ultra picks up so much more punch the 2000's left out"
- 18 inch subwoofers
"This is wine of the best speackers iv ever owned the sound like iv got two 18s in my crycler 300"
- 21 inch woofers
"I was able to squeeze them into the limited space I have on my desk, but it's worth looking at the measurements if don't have much room for them (speakers are 4.9 inches deep x 4.6 inches high x 7.7 inches wide; subwoofer is 10.4 inches deep x 11.1 inches high x 11.9 inches wide"