21 inch subs
Best Buy customers often prefer the following products when searching for 21 inch subs.
Browse the top-ranked list of 21 inch subs below along with associated reviews and opinions.
KICKER - 12" Round Grille - Gray
Model: GR120SKU: 4222504Top comment"Great way to protect your subs! I just wish this came standard with purchase of subs...12 inch sub speaker protector"
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Protect your subwoofers from damage with this Kicker round speaker grill. It fits securely on all of the brand's 12-inch subs, and the unique spoke design protrudes just enough to prevent large items from penetrating the soft fabric covers of the speakers. An open center on this Kicker round speaker grill lets sound flow without obstruction.Top comment"Great way to protect your subs! I just wish this came standard with purchase of subs...12 inch sub speaker protector"
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Protect your subwoofers from damage with this Kicker round speaker grill. It fits securely on all of the brand's 12-inch subs, and the unique spoke design protrudes just enough to prevent large items from penetrating the soft fabric covers of the speakers. An open center on this Kicker round speaker grill lets sound flow without obstruction.See all Car Subwoofers & Enclosures
KICKER - KS Series 6-1/2" 2-Way Car Speakers with Polypropylene Cones (Pair) - Black
Model: 47KSC6504SKU: 6406591Top comment"These speakers are very rich in sound and depending on the song being played sounds like you have a sub installed...The sound …Match Perfect … with my 12 inch kicker sub and amp."
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Upgrade your car's audio system with these KICKER KS Series coaxial speakers. The 6.5-inch woofer and the 0.79-inch silk-dome tweeter deliver a deep, well-balanced sound for an immersive listening experience, while the included grilles protect the drivers against damage. These KICKER KS Series coaxial speakers have a rubber and polypropylene construction for durability, and the thin-mount design allows easy installation. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.Top comment"These speakers are very rich in sound and depending on the song being played sounds like you have a sub installed...The sound …Match Perfect … with my 12 inch kicker sub and amp."
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Upgrade your car's audio system with these KICKER KS Series coaxial speakers. The 6.5-inch woofer and the 0.79-inch silk-dome tweeter deliver a deep, well-balanced sound for an immersive listening experience, while the included grilles protect the drivers against damage. These KICKER KS Series coaxial speakers have a rubber and polypropylene construction for durability, and the thin-mount design allows easy installation. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.See all Car Speakers in Additional Sizes
KICKER - CS Series 5-1/4" 2-Way Car Speakers with Polypropylene Cones (Pair) - Yellow/Black
Model: 46CSC54SKU: 6333350Top comment"I do recommend having a sub and amps to make up for the bass but other than that there good....Kicker definitely makes good quality speakers. The subs I have incase you’d like to know are kicker comp r 12s in a ported box by kicker."
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Enjoy remarkable in-car entertainment with this Kicker CS Series coaxial speaker. The large woofer magnet and heavy-duty motor deliver ultra-clean bass, and Extended Voice Coil technology produces crisp, clear and balanced audio. This durable Kicker CS Series coaxial speaker uses PEI tweeters with neodymium magnets for better clarity and increased volume in high frequencies. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.Top comment"I do recommend having a sub and amps to make up for the bass but other than that there good....Kicker definitely makes good quality speakers. The subs I have incase you’d like to know are kicker comp r 12s in a ported box by kicker."
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Enjoy remarkable in-car entertainment with this Kicker CS Series coaxial speaker. The large woofer magnet and heavy-duty motor deliver ultra-clean bass, and Extended Voice Coil technology produces crisp, clear and balanced audio. This durable Kicker CS Series coaxial speaker uses PEI tweeters with neodymium magnets for better clarity and increased volume in high frequencies. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.See all Car Speakers
JBL - GX Series 12" Single-Voice-Coil 4-Ohm Subwoofer - Black
Model: GX1200SKU: 6283643Top comment"Great Sub....This a great buy and I have 2 of these 12 inch subs. I would recommend this sub....Great sub...Was really suprising when these subs fired up. Also has low bass. Great sub for the price. "
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Only at Best Buy Keep the music thumping during your commute with this JBL subwoofer. It can handle 250W of power with a peak of 1000W for booming sounds, and it reproduces a frequency range of 35Hz - 200kHz to capture extreme bass output. This JBL subwoofer is just 6.0625 inches deep for placement in tight places. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.Top comment"Great Sub....This a great buy and I have 2 of these 12 inch subs. I would recommend this sub....Great sub...Was really suprising when these subs fired up. Also has low bass. Great sub for the price. "
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Only at Best Buy Keep the music thumping during your commute with this JBL subwoofer. It can handle 250W of power with a peak of 1000W for booming sounds, and it reproduces a frequency range of 35Hz - 200kHz to capture extreme bass output. This JBL subwoofer is just 6.0625 inches deep for placement in tight places. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.See all Car Subwoofers & Enclosures
Kenwood - Road Series 6-1/2" 2-Way Car Speakers with Cloth Cones (Pair) - Black
Model: KFC-1666RSKU: 6197112See all Car SpeakersProduct Description
Upgrade your car audio situation with these Kenwood Road Series speakers. The heavy duty magnet design keeps them pumping volume over time, and they're easy to install thanks to lower tweeter heights and a shallow depth. These 6.5-inch Kenwood Road Series speakers have 300W peak power for booming performance in your vehicle. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.See all Car SpeakersProduct Description
Upgrade your car audio situation with these Kenwood Road Series speakers. The heavy duty magnet design keeps them pumping volume over time, and they're easy to install thanks to lower tweeter heights and a shallow depth. These 6.5-inch Kenwood Road Series speakers have 300W peak power for booming performance in your vehicle. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.See all Car Speakers
KICKER - Hideaway 8" Subwoofer with Enclosure and Integrated 150W Amplifier - Black
Model: 11HS8SKU: 3526208Top comment"Great sub for the size...I purchased this sub as I wanted more bass in my truck but did not want to give up the space for a regular size subs and amp. ...It does a great job for only being a 8 inch sub. Lil bump in the trunk"
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Enjoy your music on the go with this Kicker Hideaway 11HS8 8" subwoofer that features an aluminum woofer cone for deep bass response. The hook-and-loop straps ensure secure installation.Top comment"Great sub for the size...I purchased this sub as I wanted more bass in my truck but did not want to give up the space for a regular size subs and amp. ...It does a great job for only being a 8 inch sub. Lil bump in the trunk"
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Enjoy your music on the go with this Kicker Hideaway 11HS8 8" subwoofer that features an aluminum woofer cone for deep bass response. The hook-and-loop straps ensure secure installation.See all Car Subwoofers & Enclosures
KICKER - Solo-Baric L7S 10" Single-Voice-Coil 2-Ohm Loaded Subwoofer Enclosure - Black
Model: 44TL7S102SKU: 5772309Top comment"Needed a space saving option this time around. This 10" sub hits just as hard. This pre enclosed sub is worth its price tag....Great sub!"
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Enjoy deep bass tones with this 10-inch Kicker Solo-Baric subwoofer. Enclosed in a slim black box, it's ready for action and easy to install via a 2-ohm single terminal. This Kicker Solo-Baric subwoofer provides dependable, pulsating low frequencies thanks to its 1200W peak power capability and a 89.5 sensitivity rating. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.Top comment"Needed a space saving option this time around. This 10" sub hits just as hard. This pre enclosed sub is worth its price tag....Great sub!"
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Enjoy deep bass tones with this 10-inch Kicker Solo-Baric subwoofer. Enclosed in a slim black box, it's ready for action and easy to install via a 2-ohm single terminal. This Kicker Solo-Baric subwoofer provides dependable, pulsating low frequencies thanks to its 1200W peak power capability and a 89.5 sensitivity rating. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.See all Loaded Enclosures
KICKER - KS Series 3-1/2" 2-Way Car Speakers (Pair) - Black
Model: 47KSC3504SKU: 6416028Top comment"Best sounding 3.5 inch speakers I’ve ever had. I have a 2014 4Runner and these sit in the top on the instrument panel. ...I pulled all the bases out cause it was popping converted bass only to the sub. Perfect combination"
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Pump up the volume with these 3.5-inch KICKER KS-Series speakers. The thin-mount design and a shallow tweeter depth offer simple installation, while the neodymium magnet produces clean, detailed highs. These KICKER KS-Series speakers features an 80Hz-20kHz frequency response for accurate tonal representation and high power handling capability for a rich sound. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.Top comment"Best sounding 3.5 inch speakers I’ve ever had. I have a 2014 4Runner and these sit in the top on the instrument panel. ...I pulled all the bases out cause it was popping converted bass only to the sub. Perfect combination"
See all customer reviewsSee all Car SpeakersProduct Description
Pump up the volume with these 3.5-inch KICKER KS-Series speakers. The thin-mount design and a shallow tweeter depth offer simple installation, while the neodymium magnet produces clean, detailed highs. These KICKER KS-Series speakers features an 80Hz-20kHz frequency response for accurate tonal representation and high power handling capability for a rich sound. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.See all Car Speakers
Pioneer - 12" Single-Voice-Coil Loaded Subwoofer Enclosure - Black
Model: TS-WX1210ASKU: 6351515Top comment"Best powered sub for the price. A full deep sound. Easy set-up. ...Dont do anything but add a sub."
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Experience high-output sound with this Pioneer 12-inch sealed-enclosure active subwoofer. An innovative trapezoid shape supports easy installation in multiple locations around your vehicle, in multiple positions, while offering excellent sound production. Adjustable controls including variable bass boost and phase control provide this Pioneer 12-inch sealed-enclosure active subwoofer with enhanced output regulation. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.Top comment"Best powered sub for the price. A full deep sound. Easy set-up. ...Dont do anything but add a sub."
See all customer reviewsSee all Car Subwoofers & EnclosuresProduct Description
Experience high-output sound with this Pioneer 12-inch sealed-enclosure active subwoofer. An innovative trapezoid shape supports easy installation in multiple locations around your vehicle, in multiple positions, while offering excellent sound production. Adjustable controls including variable bass boost and phase control provide this Pioneer 12-inch sealed-enclosure active subwoofer with enhanced output regulation. Geek Squad® Installation Recommended Visit your local Best Buy store for more information.See all Car Subwoofers & Enclosures
Pioneer - 12" - 1400 W Max Power, Single 4-ohm Voice Coil, IMPP™ cone, Rubber Surround - Component Subwoofer - BLUE
Model: TS-A123RSKU: 6454575Top comment"Pioneer sub...Popped two subs but for whatever reason this one is strong! ...Good sub...Very good quality sub, sounds good and had no problems installing it"
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Pump up the volume with this Pioneer TS-A123R 12-inch car subwoofer. The 48mm voice coil delivers powerful booming bass, and the glass fiber reinforced cone helps enhance impact and clarity. This Pioneer 12-inch car subwoofer has a rubber surround that helps improve stability and a simple design that makes installation fast and easy.Top comment"Pioneer sub...Popped two subs but for whatever reason this one is strong! ...Good sub...Very good quality sub, sounds good and had no problems installing it"
See all customer reviewsSee all Car Subwoofers & EnclosuresProduct Description
Pump up the volume with this Pioneer TS-A123R 12-inch car subwoofer. The 48mm voice coil delivers powerful booming bass, and the glass fiber reinforced cone helps enhance impact and clarity. This Pioneer 12-inch car subwoofer has a rubber surround that helps improve stability and a simple design that makes installation fast and easy.See all Car Subwoofers & Enclosures
Shopping ideas related to 21 inch subs
- 12 inch sub
"Deep, powerful bass from a small package"
- 16 inch subs
"A powerful, high-performance subwoofer that is capable of reproducing the most demanding deep bass notes and effects in movies and music"
- 18 inch subs
"Kicker definitely makes good quality speakers. The subs I have incase you’d like to know are kicker comp r 12s in a ported box by kicker"
- 20 inch subs
"The sub should be bigger. It's a 8 inch subwoofer and it needs a lot more bass and power"