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21 inch subwoofers

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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.

Main Results
  1. SVS - 13-1/2" 1200W Powered Subwoofer - Gloss Piano Black - Front_Zoom

    Model: SB-4000-PIANO GLOSS
    SKU: 6174937
    Top comment

    "Awesome subwoofer...Awesome subwoofer! Very heavy but has great sound. Also put the subwoofer app on my phone so I can control it in my seat while watching a movie....This is a bad a** subwoofer, no complaints at all. You can control and tweek the sound from your phone."

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    Product Description

    Add thumping bass to a home theater with this 13.5-inch SVS subwoofer. Its 1200W RMS power delivers powerful sound, and its built-in amplifier is tuned specifically to the unit for optimal ground-shaking performance. This sealed-box SVS subwoofer has a wide frequency response range of 19-310Hz for handling all types of digital media.
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    Top comment

    "Awesome subwoofer...Awesome subwoofer! Very heavy but has great sound. Also put the subwoofer app on my phone so I can control it in my seat while watching a movie....This is a bad a** subwoofer, no complaints at all. You can control and tweek the sound from your phone."

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    Product Description

    Add thumping bass to a home theater with this 13.5-inch SVS subwoofer. Its 1200W RMS power delivers powerful sound, and its built-in amplifier is tuned specifically to the unit for optimal ground-shaking performance. This sealed-box SVS subwoofer has a wide frequency response range of 19-310Hz for handling all types of digital media.
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    See all Subwoofer Speakers
  2. Yamaha - 8-Inch 100-Watt-Max Powered Subwoofer - Black - Front_Zoom
    Top comment

    "Needed a very compact subwoofer. This was one of the most compact 8" subwoofers that I could find that wasn't extremely expensive and had good reviews on the internet. ...Great Subwoofer! Compares to some of the high end subwoofers. "

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    Product Description

    This compact NS-SW050BL 8 In. 100-watt Powered Subwoofer from Yamaha incorporates a number of Yamaha's own advanced, high-performance bass technologies, such as Twisted Flare Port, Advanced YST II (Yamaha Active Servo Technology II) with discrete amp circuitry and a high-quality 8 in. woofer unit. The resulting bass response is powerfully rich and impactful. The gentle curves and matte black finish is stylishly elegant. Designed to be unobtrusive, it’s sure to look beautiful in a living room or home theater room and will match a wide range of speakers. More than a black box, it’s the heartbeat of your home theater system and provides excellent bass for movies and music.
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    Top comment

    "Needed a very compact subwoofer. This was one of the most compact 8" subwoofers that I could find that wasn't extremely expensive and had good reviews on the internet. ...Great Subwoofer! Compares to some of the high end subwoofers. "

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    Product Description

    This compact NS-SW050BL 8 In. 100-watt Powered Subwoofer from Yamaha incorporates a number of Yamaha's own advanced, high-performance bass technologies, such as Twisted Flare Port, Advanced YST II (Yamaha Active Servo Technology II) with discrete amp circuitry and a high-quality 8 in. woofer unit. The resulting bass response is powerfully rich and impactful. The gentle curves and matte black finish is stylishly elegant. Designed to be unobtrusive, it’s sure to look beautiful in a living room or home theater room and will match a wide range of speakers. More than a black box, it’s the heartbeat of your home theater system and provides excellent bass for movies and music.
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    See all Subwoofer Speakers
  3. Polk Audio - 12" 200W Powered Subwoofer - Black Washed Walnut - Front_Zoom
    Top comment

    "Two subwoofers are better than one !!...This is my second purchase of this Polk subwoofer it’s an incredible product...Great Subwoofer....I made a lot of research, listened to lot of subwoofers and eventually bought a 100W Klipsch subwoofer. "

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    Product Description

    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.
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    Top comment

    "Two subwoofers are better than one !!...This is my second purchase of this Polk subwoofer it’s an incredible product...Great Subwoofer....I made a lot of research, listened to lot of subwoofers and eventually bought a 100W Klipsch subwoofer. "

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    Product Description

    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.
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    See all Subwoofer Speakers
  4. Bowers & Wilkins - 700 Series 10" 1000W Powered Subwoofer - Gloss Black - Angle_Zoom
    Top comment

    "It matches the output of my SVS 12 inch subwoofer with ease and is about half the size. ...Great subwoofer...Excellent subwoofer, powerful, clear with no distortion throughout all frequencies, syncs well with B&W floor speakers"

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    Product Description

    Bring cinema-quality sound to your home with this single-driver Bowers & Wilkins subwoofer. Its aerofoil cone design delivers enhanced bass tones, and its 1000W digital amplification provides clear, powerful sound. Use the dedicated app to conveniently manage the calibration and correction of this Bowers & Wilkins subwoofer from your smartphone.
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    Top comment

    "It matches the output of my SVS 12 inch subwoofer with ease and is about half the size. ...Great subwoofer...Excellent subwoofer, powerful, clear with no distortion throughout all frequencies, syncs well with B&W floor speakers"

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    Product Description

    Bring cinema-quality sound to your home with this single-driver Bowers & Wilkins subwoofer. Its aerofoil cone design delivers enhanced bass tones, and its 1000W digital amplification provides clear, powerful sound. Use the dedicated app to conveniently manage the calibration and correction of this Bowers & Wilkins subwoofer from your smartphone.
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    See all Subwoofer Speakers
  5. SVS - 12" 550W Powered Subwoofer - Premium Black Ash - Front_Zoom

    Model: SB-2000 PRO -BLACK ASH
    SKU: 6394990
    Top comment

    "SVS Subwoofer...This subwoofer rocks. I have never owned an SVS subwoofer, but I am very impressed....Subwoofer...The subwoofer was everything I was looking for my system"

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    Product Description

    Enjoy massive output and deep bass extension with this SVS Sound 2000 Pro Series sealed-box subwoofer. The 12-inch high-excursion driver and 550W RMS amplify high-quality audio, while the 15.6-inch depth dimension improves clarity and reduces distortion. This black ash SVS Sound 2000 Pro Series sealed-box subwoofer features an advanced smartphone app for convenient control and DSP functions.
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    Top comment

    "SVS Subwoofer...This subwoofer rocks. I have never owned an SVS subwoofer, but I am very impressed....Subwoofer...The subwoofer was everything I was looking for my system"

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    Product Description

    Enjoy massive output and deep bass extension with this SVS Sound 2000 Pro Series sealed-box subwoofer. The 12-inch high-excursion driver and 550W RMS amplify high-quality audio, while the 15.6-inch depth dimension improves clarity and reduces distortion. This black ash SVS Sound 2000 Pro Series sealed-box subwoofer features an advanced smartphone app for convenient control and DSP functions.
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    See all Subwoofer Speakers
  6. Bowers & Wilkins - 600 Series 8" 200W Powered Subwoofer - Matte Black - Front_Zoom
    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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    Product Description

    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.
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    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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    Product Description

    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.
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    See all Subwoofer Speakers
  7. Klipsch - Reference Series 10" 150W Powered Subwoofer - Black - Angle_Zoom
    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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    Product Description

    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.
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    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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    Product Description

    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.
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    See all Subwoofer Speakers
  8. Sonance - MS10SUB - Mag Series 10" 275W Powered Cabinet Subwoofer (Each) - Black - Front_Zoom
    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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    Product Description

    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.
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    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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    Product Description

    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.
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    See all Subwoofer Speakers
  9. Amazon - Echo Sub 100W Subwoofer - Charcoal - Front_Zoom

    Model: B0798KPH5X
    SKU: 6287970
    Top comment

    "Great Subwoofer for my Alexa Devices...Great subwoofer for my Alexa devices while listening to my favorite music....Great subwoofer...This subwoofer is great. It works beautifully with my Echo Show."

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    Product Description

    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.
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    Top comment

    "Great Subwoofer for my Alexa Devices...Great subwoofer for my Alexa devices while listening to my favorite music....Great subwoofer...This subwoofer is great. It works beautifully with my Echo Show."

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    Product Description

    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.
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    See all Subwoofer Speakers
  10. Klipsch - Reference Series 12" 400W Powered Subwoofer - Black - Front_Zoom
    Top comment

    "Subwoofer...Very good subwoofers I ended up getting to love them sound is nice...The 12 inch subwoofer is great super powerful."

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    Product 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.
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    Top comment

    "Subwoofer...Very good subwoofers I ended up getting to love them sound is nice...The 12 inch subwoofer is great super powerful."

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    Product 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.
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    See all Subwoofer Speakers
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