Now that you are here, you must be looking for the best 21 inch home theater subwoofer! If you aren’t for it, you shall use our search and look for the topic you are interested in. As this piece is a lengthy one and covers a few more aspects other than the best list, they are the best 21 inch home theater subwoofer brands in United States of America and a buyer’s guide for making an informed buying decision.
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You surely are here for being able to make an informed buying decision when it comes to 21 inch home theater subwoofer and you must be looking for the list, We know that! But before we begin, we’d like to tell you that, this is the most unbiased list ever, it has specs, lists down the features of the 21 inch home theater subwoofer, best brands and has a dedicated buyer’s guide for people in United States of America.
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Best 21 inch home theater subwoofer in 2022
1. Polk Audio PSW10 10″ Powered Subwoofer – Power Port Technology, Up to 100 Watts, Big Bass in Compact Design, Easy Setup with Home Theater Systems Black -Subwoofers
By Polk Audio
More Pictures- A sleek detachable grille on the front, speaker and line-level inputs as well as speaker-level outputs on the back, and a Phase Toggle Switch for multiple subwoofers, make this sub cohesive and complete!
- POWERED SUBWOOFER FOR EXTRA BASS & PUNCH – A 10-inch Dynamic Balance woofer & a uniquely configured directed port provides accurate bass with added depth that brings your music and movies alive
- EASY TO INTEGRATE WITH EXISTING SYSTEMS – Hook up this sub to the receiver and upgrade your music sound instantly! Features continuously variable 80-160 Hz crossover and 40-160 Hz (-3dB) frequency response
- DOUBLE THE AMPLIFIER POWER TO 100 Watts of Dynamic Power with its in-built 50-watt RMS amp
- A perfect solution for your small-to-mid size room
- LOUDER CLEARER SOUND EVEN AT HIGH VOLUME – Enjoy a thrilling yet balanced music experience with rich, deep sound, even at low frequencies
- Sophisticated engineering with best in class resonance-free driver materials make this sub highly durable and FIT FOR EXTENDED USE
- BLENDS EASILY WITH ANY SPEAKER and plays the most demanding nodes effortlessly without any distortion
2. Klipsch R-12SW Subwoofer -Subwoofers
By Klipsch- Line/LFE inputs for compatibility with most receivers
- Equally impressive with music and movies; Brushed black polymer veneer cabinet with satin painted plinth
- Low pass crossover and phase control
- Powerful 12″ copper-spun front-firing woofer
- All-digital amplifier delivers 400 watts of dynamic power
3. Polk Audio Signa S2 Ultra-Slim TV Sound Bar | Works with 4K & HD TVs | Wireless Subwoofer | Includes HDMI & Optical Cables | Bluetooth Enabled, Black -Subwoofers
By Polk Audio- EXCELLENT SOUND AND VALUE on par with any mid- to high-range sound bars available in the market
- SET UP YOUR SOUND BAR IN MINUTES — With the included subwoofer, HDMI and optical cables quickly connect your TV to the sound bar
- At just over 2″ tall, it fits most spaces — easily wall-mount it or place in front of your TV
- WIRELESSLY STREAM MUSIC from your favorite streaming apps like Pandora, Spotify, TuneIn, and others directly from your smartphone, tablet or other compatible device through the built-in Bluetooth technology
- With numerous connection possibilities, plug in any audio source via HDMI ARC, optical input & AUX
- It won’t block your TV’s bottom edge or IR remote sensor
- POLK’S EXCLUSIVE VOICE ADJUST TECHNOLOGY & Dolby Digital Decoding maximizes sound clarity & reduces voice delays
- UPGRADE YOUR HOME THEATER EXPERIENCE – Watch your favorite shows on your 4K HD Smart TV with exceptional picture quality & crystal clear sound
- Get set up and listening in minutes
- A PREMIUM ULTRA-SLIM SOUND BAR WITH INCLUDED WIRELESS SUBWOOFER – 5 powerful full-range drivers deliver BEAUTFUL RICH SOUND WITH DEEP BASS
4. Elac SUB1010 120 Watt 10″ Powered Subwoofer, Black, SUB1010-BK -Subwoofers
By ELAC- Driver: 10″ Low Throw dynamic woofer with these inputs: L/R/LFE/speaker level
- Amplifier power: 120 watts peak/ 60 watts RMS
- Enclosure Type: bass reflex
- Amplifier Type: Class AB
- Frequency response: 38hz-200hz; crossover frequency: 40hz-200hz
5. Klipsch Synergy Black Label Sub-100 10” Front-Firing Subwoofer with 150 Watts of continuous power, 300 watts of Dynamic Power, and All-Digital Amplifier for Powerful Home Theater Bass in Black -Subwoofers
By Klipsch- 10-inch, front-firing driver
- What’s in the box: (1) Sub-100 Subwoofer and power cord – connection wires not included
- 150 watts continuous, 300 watts dynamic power
- Place your subwoofer in a corner for optimal performance
- Contemporary finish to integrate with any decor with ease
- Must be connected to AV Receiver, processor, or pre-amp
- Dimensions: 14” H x 12.5” W x 15.7” D
- All digital amplifier for high-efficiency and true-to-source sound accuracy
- Spun copper front-firing Cerametallic woofers
- Strong, flexible, removable grille
6. Monoprice 60-Watt Powered Subwoofer – 8 Inch With Auto-On Function, For Studio And Home Theater Black -Subwoofers
By Monoprice- Additionally, the subwoofer has a set of right/left Line Level inputs
- This is an 8″ powered subwoofer capable of producing 60 watts (RMS) output
- When connecting the unit as part of a 5.1 system, these would be taken off the Front Left and Front Right outputs in parallel to the standard pair of front speakers
- The subwoofer has a frequency response range of 50 to 250 Hz with a lowpass crossover filter, which can be adjusted from 50 to 150 Hz
- For each input there is a corresponding output.
- If using a standard stereo system, without a special subwoofer output, you can connect these to the left and right line level outputs on the amp
- The subwoofer will then combine the signals to process the mono bass signal it needs to drive the speaker
- If you are using an amplifier with a single mono subwoofer line level output, simply use an RCA “Y” cable to split the output and send it to the two line level inputs on the subwoofer.
- High-level inputs accept a full-range signal from the amplifier’s stereo speaker outputs
- The driver and a 2 3/4″ sound port are located on the front, covered by a black cloth speaker grill.
- Gain and frequency knobs on the control panel allow you to adjust the crossover filter and the power output for the optimum blend and balance of bass output with your stereo or surround speakers.
- The subwoofer provides its own power and includes impedance matching circuitry, so this will not reduce the power output to the front speakers or affect the overall impedance load on the amplifier.
- The subwoofer is housed in an attractive black wood cabinet that measures 13.75″ x 11.75″ x 11.75″ (H x W x D)
- The subwoofer has multiple input options, which allow it to be used with any existing stereo or 5.1 (or greater) amplifier system
7. Edifier T5 Powered Subwoofer – 70w RMS Active Woofer with 8 inch Driver and Low Pass Filter -Subwoofers
By Edifier- LOW PASS FILTER WITH FREQUENCY RESPONSE DOWN TO 38Hz – Ensures that your woofer only plays sounds too low for your speakers to properly output
- THICK MDF WOODEN ENCLOSURE – We use high quality, dense fiberboard materials that offer reduced acoustic resonance for better audio quality.
- 2 YEAR WARRANTY – Edifier guarantees you’ll have an amazing experience with our products
- AUTOMATIC STANDBY – Save on electricity with an auto standby feature that ensures the woofer is not unnecessarily using up power when it’s not being used.
- Buy with confidence, and enjoy our 2 year warranty.
- 8″ SPEAKER DRIVER – Delivers powerful sound with highly accurate, distortion-free bass to provide you with a better listening experience.
- Supplement your speakers great high and mid-range with bass you can really feel.
8. Skar Audio IX-8 D4 8″ 300 Watt Max Power Dual 4 Ohm Car Subwoofer -Subwoofers
By Skar Audio- High Strength Pressed Paper Cone and Foam Surround
- Subwoofer Mounting Depth: 4.17″
- Frequency Response Range: 30 Hz – 350 Hz | Sensitivity: 82.6 dB
- 2″ BASV Premium Voice Coil | Advanced Air Flow Cooling Design
- 8-Inch Dual 4-ohm Car Subwoofer
- Peak Power: 300 Watts | RMS Power: 150 Watts
9. Sony HT-S350 Soundbar with Wireless Subwoofer: S350 2.1ch Sound Bar and Powerful Subwoofer – Home Theater Surround Sound Speaker System for TV – Blutooth and HDMI Arc Compatible Bar Black -Subwoofers
By Sony- 7 Sound Modes: Choose from Auto Sound, Cinema, Music, Game, News, Sports, and Standard Audio Mode
- Bluetooth Streaming: Stream Your Favorite Movies, Shows, and Music from Your Smartphone or Tablet
- In the Box: Soundbar, Subwoofer, Remote Control, Batteries, Optical Cable, Quick Setup Guide, Manual
- Ultimate Home Theater Upgrade: Sony 2.1 Channel Sound Bar System With Wireless Subwoofer for Optimized Audio
- Audio Comes Alive:320W total power output brings content to life with incredible volume and clarity
- Wirelessly Connect: Connect via Bluetooth to Send Audio to the Slim Soundbar and Sub from Anywhere
- Powerful Subwoofer: Large 6.30 Inches Speaker Unit and 6.16 Gallon Volume for a Deeper, Richer Bass Sound
- Voice Enhancement: Isolates Voices and Amplifies Them over the Background Noise for Greater Clarity
- S-Force Pro: Virtual Surround Sound Technology Emulates a Theater-Style Surround Sound Experience
- One-Cable Connect: Send Audio and Control Information from the TV Using a Single Cable with HDMI Arc
10. Klipsch Synergy Black Label Sub-120 12” Front-Firing Subwoofer with 200 Watts of continuous power, 400 watts of Dynamic Power, and Digital Amplifier for Powerful Home Theater Bass in Black -Subwoofers
By Klipsch- Compatible with almost any AV receiver
- Contemporary finish to integrate with any decor with ease
- What’s in the box: (1) Sub-120 Subwoofer and power cord – connection wires not included
- 12-inch, front-firing driver
- Spun copper front-firing Cerametallic woofers
- Dimensions: 16” H x 14” W x 19.25” D
- Strong, flexible, removable grille
- Place your subwoofer in a corner for optimal performance
- 200 watts continuous, 400 watts dynamic power
11. Klipsch R-100SW 10″ Subwoofer, Incredibly Deep Bass and an All-digital Amplifier -Subwoofers
By Klipsch
- Amplifier features: Volume, low-pass, 0 180 phase, Auto power on
- All-digital amplifier with 300 watts peak power
- Dimensions 14 5″ x 12 5″ x 16 4″
- Frequency response: 32Hz – 120Hz – 3dB
- 10″ front-firing spun-copper IMG woofer
- Volume low pass crossover and phase control
- Line level LFE RCA inputs for maximum receiver compatibility
- Amplifier power (Cont Peak): 150W 300W
12. Powered Subwoofer, Bestisan 6.5″ Active Home Audio Subwoofer with Bluetooth in Compact Design, Opt/RCA/Bluetooth Input, Built-in Amplifier for Home Theater, Receiver, Speakers, Deep Bass in Black -Subwoofers
By BESTISAN
- Powered Subwoofer For Extra Bass & Punch- The 6.5″ powered subwoofer features continuously variable 60-250hz crossover and 40-250hz frequency response
- Note: We recommend you to pair the subwoofer with your speakers/soundbars as it enlarges the bass only.
- RCA Line Input&Output- Standard RCA inputs easily connect to your home theater receivers subwoofer output, and its outputs can pair with soundbar with AUX or bookshelf speakers with line in, pumps out loads of deep, tight, smooth bass with low distortion, for the ultimate in refined behavior.
- 100% Satisfaction Service- Bestisan offers lifetime technical support
- Any questions or suggestions, pls freely email us for help
- The enclosure is built with the perfect air space to maximize sound quality and punch.
- Wireless Bluetooth 5.0 Transmission- Built-in Bluetooth technology lets you stream music directly from your smartphone, tablet or other compatible devices
- We absolutely give you a satisfied solution.
- Connect the Subwoofer to Soundbar and TV – Switch the subwoofer to OPT mode and connect it to TV via optical cable in the box, then hook a supplied RCA cable between audio out port on the sub and AUX in port on the soundbar, switch the soundbar to AUX mode.
13. Sound Storm Laboratories LOPRO10 Amplified Car Subwoofer – 1200 Watts Max Power, Low Profile, 10 Inch Subwoofer, Remote Subwoofer Control, Great For Vehicles Needing Bass But Have Limited Space, Black -Subwoofers
By Sound Storm Laboratories
- Most aftermarket radios have multiple pairs of RCA outputs that can connect to multiple amplifiers
- The combination of amplifier and subwoofer all into one, makes this ideal for spatially challenged vehicles
- We strongly encourage Professional installation of this product to ensure proper and safe functionality
- Built-in amplifier: with a MOSFET power supply you get improved switching speeds, better performance with less power from the driver, lower gate-to-drain feedback capacitance, lower thermal impedance for higher switching frequencies
- Variable bass boost: variable bass boost allows you to adjust the low bass within the boost Range to just the way you like it
- You will use the Low-pass filter to primarily keep high notes out of your subwoofer(s)
- If you are short on space, This is a great solution for you
- Dimensions: 15” x 9
- 75” x 3”
- Low-Level Inputs – Line level inputs (RCA inputs / low-level inputs) use RCA interconnect cables to link the LOPRO10 with the source unit
- : sound storm provides a powerful 3-year Platinum online dealer so long as the purchase is made through
- It will be used to connect the LOPRO10 to your factory radio or an aftermarket radio that does not have low-level (RCA) inputs
- Variable Low-Pass Filter – A low-pass filter is an electronic circuit that removes all the notes above the filter’s frequency setting
- High level inputs: speaker level inputs are commonly referred to as high-level inputs
14. Saiyin Soundbar, Sound Bars for TV with Subwoofer, Ultra Slim 24 Inch Bluetooth, 2.1 Channel TV Speakers Surround Sound System Opt/AUX Connectivity. -Electronics
By Saiyin
- [THREE DISTINCT SOUND MODES] Music, Movie and TV shows modes adjusted by using the remote control included, catering to different needs of sound bar users
- [ULTRA SLIM & ELEGANT DESIGN] The sound bar is built with 2 full range speakers and elegant slim design with piano paint which is compatible with modern TVs, and never block the TV screen
- The wired 4 inch subwoofer easily fits in most spaces and adds rich bass from anywhere in the room.
- You can also control the volume, switch between different modes with buttons on sound bar
- Remote control is not compatible with universal or TV remotes
- [SET UP IN MINUTES]Connect the subwoofer with sound bar via cable included, and hook up TV with sound bar via Bluetooth or optical, coxial, RCA cables, then you are ready to go! The TV sound bar can be placed under TV on desktop or mounted on wall with provided mounting kits.
- [MULTIPLE INPUT OPTIONS]The sound bar for TV supports advanced Bluetooth 5.0 wireless connection, with which you can connect easily with iphones, ipads, tablets, PC and other Bluetooth enabled devices to stream music; and also wired connection including optical, coaxial, RCA inputs (all cables included).
- The 24 inch sound bar is built with 2 full range speakers, allowing you enjoy all details of music and movies
- Total harmonic distortion is about 0.5% even at the highest volume.
- [2.1 CHANNEL SPEAKER SYSTEM ] Sound bar with wired subwoofer delivers powerful bass and surround sound, letting you enjoy an immersive sound experience
15. Powered Subwoofer, BESTISAN Deep Bass Home Audio Subwoofer, Wired and Wireless Compact Subwoofer for Home Theater/TV/Speakers/Computer/Phone, Bluetooth 5.0/Optical/RCA, Built-in Amplifier 6.5’’ Sub -Subwoofers
By BESTISAN
- Optical and audio cable are included, connect this sub with your TV or other device, to enjoy rich bass from them.
- Led display design – Different led light indicates different mode, round corner design can prevent bruising and perfectly integrate with your room.
- Wireless& wired Connection – Bluetooth connectivity allows full control, even when the subwoofer is out of sight and bi-directional feedback shows adjustments in time on both the warning tone and rear panel subwoofer interface
- The enclosure is built with the perfect air space to maximize sound quality and punch.
- Home Audio Subwoofer – The subwoofer with built-in amp combines delicate musicality and thunderous power for the ultimate in home theater sound effects as well as unsurpassed musical excellence
- 6.5 Inch Side Firing Woofer – Long throw subwoofer with high rigidity PVA Treated cone, bottom slotted port, Bass Reflex cabinet design in compact size, with added internal bracing and fashion black oak finish, not only a excellent sub, but also a premium decor.
- Powered Subwoofer – Integrated high efficiency power amplifier, this sub is your answer to more power in a compact design.Overall frequency response 40- 250 Hz, Gain and 60 – 250 Hz Crossover control knobs
- We recommend you to match this subwoofer with your speakers, brings you immersive surround sound.
16. PRORECK PR18 18 inch 2000W P.M.P.O Active Powered PA DJ Subwoofer Cabinet -Electronics
By PRORECK
- Housing is also plated with special material for impact-resistance.
- Selectable phase from 0°to 180°to run multiple subwoofers
- Power-on and max volume indicators, crossover 40Hz-160Hz.
- Two side handles make it easy to transport
- Super solid housing is made of plywood to reduces resonance for distortion-free and accurate response
- Weight: 68lbs; Dimension:22”(W) x24.5”(D) x26”(H)
- It also comes with filtered XLR output to export audio signal between 100Hz and 20KHz.
- Lightweight but powerful: Built-in CLass-D amplifier ensures deep and thrilling stereo sound
- Powerful 2000-Watt powered subwoofer with 18” low-frequency driver for bass reinforcement.; 400 Watts RMS/ 800 watts Program/ 2000 Watts Peak; 18 inch woofer with 60oz magnet and 3″ voice coil
- Great for parties, bars, weddings, meetings, speeches, churches, gymnastics, conferences, home theaters, etc.
- Balanced XLR combo input and stereo RCA input ensures that left and right audio signal are both collected to avoid losing channel information.Stereo RCA output and full range XLR combo output
17. Polk Audio T50 150 Watt Home Theater Floor Standing Tower Speaker (Single, Black) – Hi-Res Audio with Deep Bass Response | Dolby and DTS Surround -Subwoofers
By Polk Audio
- CREATE A FULL-FLEDGED 5.1 HOME THEATER SETUP with the complete range of T-series speakers from Polk with two T50 Tower Speakers, one T30 Center Channel, two T15 Bookshelf speakers and a subwoofer
- POLK’S UNMATCHED QUALITY AT AN AFFORDABLE PRICE
- GET SUPERIOR HOME THEATER EXPERIENCE WITH IMMERSIVE SURROUND SOUND & HI-RES AUDIO
- The 2 bass radiators augment the main woofer and produce a well-balanced, natural warm sound reaching the far corners of the room
- AMPLIFY YOUR MOVIE, MUSIC AND GAMING EXPERIENCE with this T-series speaker that not only sounds brilliant but also heightens your audio experience
- Featuring a 1″ tweeter, a 6.5″ Driver and (2) 6.5″ Bass Radiators
- Polk speakers are COMPATIBLE WITH MOST HOME THEATER AV RECEIVERS giving you many setup arrangement options – in single or multi-room with 2.0, 2.1, 3.1 systems or an immersive 5.1, 7.1 or 9.1 setup
- Fill any small to medium sized room, produce captivating lifelike sound, which pulls you right into the heart of the action
- With these value-priced speakers, you can now enjoy premium acoustics, high quality construction, easy setup and a spectacular theater experience right at home
18. SVS SB-1000 300 Watt DSP Controlled 12″ Ultra Compact Sealed Subwoofer (Premium Black Ash) -Electronics
By SVS
- Rubber surround for durability and long life
- Green standby mode with > 0.5 watts consumption
- Efficient and cool-running Class D topology
- RoHS compliant lead-free construction worldwide safety certifications
19. Yamaha 10″ 100W Powered Subwoofer – Black (NS-SW100BL) -Subwoofers
By Yamaha Audio
- Stylish addition to any room
- New twisted flare port contributes to clear and tight bass
- Advanced YST II (Yamaha Active Servo Technology II)
- 10” cone woofer
20. Edifier R980T 4″ Active Bookshelf Speakers – 2.0 Computer Speaker – Powered Studio Monitor (Pair) -Subwoofers
By Edifier
- CABLES INCLUDED – RCA and 3.5mm cables and speaker wire included
- 2 X AUX INPUT – Convenient connection to any device that has a 3.5mm headphone output or dual RCA output
- CLASSIC WOOD FINISH – 100% wooden enclosures to minimize acoustic resonance, Magnetically shielded speakers
- Universal 110V-240V power supply.
- 24 WATTS RMS POWER OUTPUT – Active bookshelf speaker system with 24W total power output with calibrated, flared bass reflex port in front
- 2 YEAR WARRANTY – Guaranteed high quality and reliability with hassle-free parts and labor warranty for two years in USA and Canada.
- Connect to two devices via AUX at the same time, no plugging and switching needed.
21. Klipsch Reference R-10SW 10″ 300w Powered Subwoofer (Black) -Subwoofers
By Klipsch
- Powerful 10″ copper-spun front-firing woofer
- Line/LFE inputs for compatibility with most receivers
- Equally impressive with music and movies
- Low pass crossover and phase control,Dimensions:14(H) x 12.5(W) x 15.7(D) Inches
- All-digital amplifier delivers 300 watts of dynamic power
22. Yamaha 8″ 100W Powered Subwoofer – Black (NS-SW050BL) -Subwoofers
By Yamaha Audio
- Dynamic Power: 100W (5 ohms)
- 8” cone woofer
- Advanced YST II (Yamaha Active Servo Technology II)
- Stylish addition to any room
- New twisted flare port contributes to clear and tight bass
23. JBL Professional EON618S Portable Self-Powered Subwoofer, 18 Inch (EON618S) -Subwoofers
By JBL Professional
- JBL premium transducers
- AC Input Voltage: 100 – 240VAC (10%), 50/ 60Hz
- Input: Balanced combo ¼”/ XLR (x2); output: male XLR (x2)
- Purchase includes: EON618S Subwoofer, 10-Foot power cord, and quick-start guide
- 3 Parametric EQs + Hi & Lo Shelf Gain and delay save and recall settings polarity Inversion
- Maximum SPL output: 134 dB
- Pair with the JBL Professional EON610, EON612, or EON615 for an affordable portable system with studio-quality sound
- 1000-Watts Highly efficient Class-D amplification
- System Type: Self Powered 18-Inch Subwoofer
24. S 808 SUB Black NA -Subwoofers
By Jamo
- Ultra slim cabinet
- 8″ polyfiber woofer
- 100-Watt bottom mounted class D amplifier
- Perfect combination of style and performance
25. REL Acoustics T/5x Subwoofer, 8 inch Down-Firing Driver, Arrow Wireless Port, High Gloss Black -Electronics
By REL Acoustics
- Experience home theater and music as the artist intended with the most award winning high-end subwoofer brand, REL Acoustics
- Covers all REL products and parts that are defective in material and workmanship
- Perfect for stereo or home theater systems
- Makes music and cinema sound more natural with enhanced spatial resolution
- The T/5x enriches modest systems with deliciously sumptuous natural bass, high quality construction, and gorgeous finishes
- Use a single T/5x for rooms 100-400 sq
- The warranty is no transferable.
- We will, at our sole option, repair or replace any defective parts free of charge
- feet
- Arrow Wireless compatible, Closed Box, down-firing 8″ long-throw steel chassis driver, 125 watt Class A/B amplifier with High Level Neutrik Speakon, Low Level single RCA, and .1/LFE RCA inputs, -6dB @ 32Hz in room frequency response.
- Increases the soundstage depth and imaging for a truly high end experience.
- feet or a Stereo Pair for rooms 400-600 sq
- Features high quality long throw drivers and powerful, reliable amplifiers
- WARRANTY: 3 years parts and labor on new products
- Matches well with modest systems and small to large sized rooms
- Comes with manual, power cord, and 10M (33 feet) High Level Speakon connector
- No assembly required
26. Soundbar, BESTISAN Sound Bar with Bluetooth 5.0 and Wired Connections Home Audio Sound Bars for TV (50 Watt, 3 Audio Mode, Touch Control, Sub-Out Port, Bass Adjustable, Mountable, 2022 Version) -Subwoofers
By BESTISAN
- Super Easy to Operate: Touch or Remote Control to adjust playback settings including volume and track selection as well as bass & treble settings.
- Better than TV Sound: Driven by two 25 Watt 3 inch speakers and two bass reflex port, delivers more extended audio curve with deep bass which offers an entirely different experience of playing video games and watching movies
- Fits your desk perfectly: The ultra-slim sound bar is tailored to save precious space and avoid cluttering
- 3 Different Equalizer Modes: 3 sound modes (Movie, Music, Dialogue) via the remote control to match your favorite sound, under DIALOGUE mode, super-clear voices, even at low volumes.
- 5 Minutes Install: One connecting power cord and one connecting audio cord.
27. SVS 3000 Micro Subwoofer with Fully Active Dual 8-inch Drivers (Piano Gloss Black) -Subwoofers
By SVS
- Proprietary injection-molded NBR surrounds built for extreme-excursion and longevity at reference playback levels.
- High-current 4-layer copper voice coil winding minimizes distortion and power compression while providing effective heat dissipation and tuned magnetics for accuracy at high excursion
- Formidable proprietary ferrite motor system generates high-flux-density magnetic fields to drive room-filling sound pressure levels with pinpoint transient speed
- Precisely tuned overhung motor configuration for unerring woofer control at all drive levels
- Dual 8-inch baskets with FEA optimized powder-coated frames for maximum rigidity thermal conductivity and mechanical damping
28. Nobsound NS-03G Subwoofer Amplifier 100W Mini Sub Power Amp (Black) -Electronics
By Nobsound
- It can be easily placed on your desktop or your subwoofer.
- It adopts TPA3116D2 chip and can offer 100W high power
- You can connect various sound sources like phones, CD players, TV very easily.
- This one doesn’t include a power supply
- We recommend 12~24V, at least 4A.
- You can choose our high quality 19V power supply (ASIN: B074J81XRB) or buy the power supply you like
- 3.5mm AUX input
- Please note it is not compatible with active/powered subwoofers as well as normal speakers.
- Super mini size and solid shell
- Please choose good quality power supply
- NS-03G is a sub power amplifier for passive subwoofer
- With smooth volume control knob.
29. Definitive Technology ProSub 800 – High Output Compact 300W Powered Subwoofer | Heart-thumping sound for Home Theater System | (Single, Black) – | Descend Series Subwoofers | Discontinued by Manufacturer -Subwoofers
By Definitive Technology
- ADJUSTABLE FEET FOR BETTER STABILITY – The ProSub comes with four integrated feet with rubber tips for secure placement on any hard floor
- BRING HIGH DEFINITION MUSIC TO LIFE – Infinite Power Source Amplifier, Discrete MOSFET output devices, and a unique radiator design provides 27% greater radiating area than a single 10-inch woofer so you can enjoy deep impactful music anywhere
- You can even adjust the height, if the floor surface is uneven
- CREATE A FULL HOME THEATER SYSTEM – For an immersive cinematic experience, pair this sub with the ProCenter 1000 center channel and ProMonitor 800 satellite speakers or just add it to your existing setup for extra boom and punch
- ENDLESS CONNECTIONS AND EASY INTEGRATION – Connect this sub to any stereo or multi-channel audio system using the wide range of Line-Level & Speaker-Level Input & Output connections
- It is very convenient and quick
- 300W RMS for a THUNDEROUS SOUL-SHAKING BASS RIGHT IN YOUR LIVING ROOM – ProSub 800 is equipped with a high excursion 8″ front-mounted direct-radiating woofer pressure-coupled to an 8″ low bass radiator
- THE PERFECT COMPLEMENT TO ANY AUDIO SYSTEM – Backed by Definitive Technology’s relentless engineering, superior cinematic effects with ultimate musical realism and the award-winning design makes it the MOST SOUGHT-AFTER POWERED SUBWOOFER OF ALL TIME
30. Fosi Audio M02 Subwoofer Amplifier Mono Channel Amp Home Theater Power Amp 100Watt -Electronics
By Fosi Audio
- Full-Frequency and Sub Bass Switchable With a selector can be switched to subwoofer bass amplifier or full frequency mono amp, can be connected to passive suboower/speaker.
- Home Hi-Fi amplifierHome Hi-Fi mono integrated class d amplifier, Exclusively designed for the customers who pursue HiFi sound; Ship with 19V 4.74A power adapter.
- No pop, no audible noise, dead silent when nothing is playing through it.
- Hi-Fi Amp with Clean Sound QualityM02 subwoofer amp adopts TPA3116 chip, NE5532 op-amp, can provide 100watt output power for 4 ohm subwoofer or speaker
- High Quality After-sale Service With 18 months warrenty and 24 hours after-sale service online to provide you the great shopping exprerience.
- Mini Compact but PowerfulBuilt-in low pass filter for subwoofers with sub frequency control, small simple compact design but practical and powerful.
31. Klipsch 12″ 400 Watts Wireless Subwoofer Brushed Black Vinyl (R-12SWi) -Subwoofers
By Klipsch
- 12″ front-firing, spun copper img woofer
- Low pass crossover and phase control
- Strong, flexible, removable grille
- 2.4Ghz wireless hi-fi pre-paired transmitter
- Included components: One Subwoofer, Wireless transmitter, power cable
- All-digital amplifier
32. Polk Audio HTS 12 Powered Subwoofer with Power Port Technology | 12” Woofer, up to 400W Amp | For the Ultimate Home Theater Experience | Modern Sub that Fits in any Setting | Washed Black Walnut -Subwoofers
By Polk Audio
- Polk’s commitment & expert craftmanship with their use of advanced technology, master engineering, and innovation helps them bring out the BEST IN SOUND SYSTEMS AND SPEAKERS so you can SIT BACK, RELAX AND LISTEN WITH YOUR HEART
- POLK’S PATENTED POWER PORT TECHNOLOGY delivers deeper bass response with its turbulence-smoothing diffuser that transitions air flow from the speaker into your listening area minimizing any kind of distortion & delivering rich full-range sound everywhere
- ALL CONTROLS ON THE REAR PANEL – Controls for volume, low pass filter and phase toggle for optimum bass levels (0 to 180 degree) are in close reach – right on the back of the subwoofer
- The front has a clean rich look with detachable grille
- UNIVERSAL COMPATIBILITY & VERSATILITY – The sub comes with LFE & stereo line level inputs
- HIGH EFFICIENCY SUB-WOOFER FOR SMALL TO MEDIUM-SIZED ROOMS – The HTS 12 features a 12″ front-firing long-throw woofer with Polk’s proprietary Dynamic Balance Technology designed to fill your room with immersive, three-dimensional sound in great clarity
- YOUR BEST BET WITH MODERN LOOKS & THUNDEROUS PERFORMANCE – The sleek rounded corners are a highlight, but this sub will surely take your movie & music experience up a notch with its deep rumbling bass from the in-built 200-watt amplifier (400W at peak)
- Pair it with any of Polk’s Signature series 2-channel stereo speakers or create a complete home theater with S60 tower, S20 bookshelf & S35 center channel speakers
33. Dayton Audio SUB-800 8″ 80 Watt Powered Subwoofer -Subwoofers
By Dayton Audio
- Unobtrusive textured black vinyl finish
- Heavy duty long-throw 8″ woofer
- Perfect for small home theaters or listening rooms
- Selectable “Auto-on” mode
- Downward-firing flared port design for clean, powerful bass
34. Nakamichi Shockwafe Elite 7.2.4 Channel 800W Dolby Atmos/DTS:X Soundbar with Dual 8” Subwoofers (Wireless) & 2 Rear Surround Speakers. Enjoy Plug and Play True 360° Cinema Sound & Room-Shaking Bass -Electronics
By Nakamichi
- Simply put, the surround sound performance from simulated/virtual 2.1 or other 5.1 channel surround soundbars does not come anywhere close to this.
- Envelop your home theater with up to 7.2.4 channels of Dolby Atmos or DTS:X moving audio that flows all around you
- Refer to your TV brand’s audio output specs)
- Discover what you have been missing from movies, music and games and step into the future of home theater
- Experience a whole new level of surround performance with our exclusive Spatial Surround Elevation SSE Technology
- Experience deep, room-filling bass with the industry’s only Dual Wireless Subwoofers and True 360° 7.2 channel surround sound with the Soundbar + Two Rear Surround Speakers
- Agreed among experts, TWO subwoofers are a must for ultimate home theaters.
- All units sold since Aug ’19 can receive Dolby Atmos surround via TV’s eARC when streaming with TV’s smart apps like Netflix (Note: not all TVs can output Atmos
- Altogether, the sound bar with subwoofers unleash cinema-level volumes without a trace of distortion, replicating the perfect cinema experience
- Created with the same DNA as our flagship Shockwafe Ultra 9.2.4 SSE, Winner of the best Dolby Atmos Soundbar Battle (hosted by Brian Tong, Ex Cnet host)
- They merge to distribute adrenaline-pumping bass effects evenly throughout the room with zero localization
- Featuring 3 advanced audio processing engines working in harmony to enhance directionality, enlarge spaciousness and unlock extra details of any audio soundtrack
- Transform your living room into a premium cinema within minutes
- Each of them (connected to sub via RCA wires) is constructed with a tweeter that reproduces high frequencies with captivating clarity, and a full-range driver that delivers surround effects with power and precision
- Our DUAL 8″ WIRELESS SUBWOOFERS (industry’s first!) produce ground-shaking rumbles that you will hear and feel from anywhere in your living room
- The 52-key backlit remote allows seamless control of sources, DSP modes, individual channel and room size optimization
- Enjoy advanced connectivity with Dolby Vision, 4K UHD pass-thru and High Dynamic Range (HDR)
- Unleash the full dynamics of your audio experience with 106dB of room-filling sound.
- TWO 2-WAY REAR SPEAKERS (industry’s first!) produce spacious and dynamic surround sound
- Connect up to 6 devices via 1 HDMI ARC, 3 HDMI, 1 Optical and 1 Coaxial inputs
35. Sony SACS9 10-Inch Active Subwoofer,Black -Subwoofers
By Sony
- Cutoff frequency adjustment along with level adjustment, phase switching, and a power save mode allows for customer operation
- Active 10” subwoofer perfect to provide that extra punch for your home theater or music listening setup
- 10” Dual layer mica woofer diaphragm delivers faithful sound and optimal bass response
- One speaker per carton
- 115 W maximum input power
- Amplify your movie, music, and gaming experience with a speaker that provides full frequency audio with a three-way coaxial, four-driver speaker system
- Bass reflux enclosure with a woof cabinet and cloth grille offers a durable design
- Create a robust 5.1.2 home theater setup perfect for Dolby Atmos with the complete range of CS speakers from Sony with the SACS9 subwoofer, 2 SSCS3 tower speakers, 1 SSCS8 center channel speaker, 2 SSCS5 bookshelf speakers, and 2 SSCSE Dolby Atmos enabled speakers
- Motion feedback technology utilizes detection circuitry to correct variations in the input signal, helping to prevent distortion
36. BOSS Audio Systems CXX8 8 Inch Car Subwoofer – 600 Watts Maximum Power, Single 4 Ohm Voice Coil, Easy Mounting, Sold Individually -Subwoofers
By BOSS Audio Systems
- Making our voice coils with this material gives our speakers the advantage of longer pay times with lower weights
- – BOSS Audio Systems provides a powerful 3-year platinum online dealer so long as the purchase is made through
- 25” x 8
- Stamped Basket – A stamped basket can absorb and transfer much of the energy produced by the speaker
- We strongly encourage professional installation of this product to ensure proper and safe functionality
- Specs – Resonant Frequency: 49 Hz, Sensitivity SPL (1W/1m): 83 Db, Dimensions: 8
- 25” x 4
- 3”
- Surround – Rubber has the ability to endure much punishment without any sign of damage
- It complements the whole structure of the speaker by allowing constant abuse where it is most needed, without the wear and tear
- Voice Coil – Our voice coils are able to withstand high temperatures yet maintain its strength and fatigue properties
- It has good corrosion resistance, good mechanical property, high thermal and electrical conductivity and retains strength at high temperatures.
- Cone – Made from Polypropylene, The CXX8 8 Inch Car Subwoofer Provides a Resilient and Durable Material That Can Offer Great Sound with The Advantage of a Long-Lasting Subwoofer
37. Acoustic Audio PSW600-15 Home Theater Powered 15″ LFE Subwoofer Black Front Firing Sub -Subwoofers
By Acoustic Audio by Goldwood
- 15 INCH FRONT FIRING WOOFER – Long throw woofer with high rigidity PVA Treated cone, bottom slotted port, Bass Reflex cabinet with vibration absorbing feet, high quality MDF with internal bracing, black ash finish and removable acoustically transparent grill
- Save power with the added Signal Sensing Auto ON/OFF feature
- 600 WATTS PEAK POWER – Integrated high efficiency power amplifier, 22 – 250 Hz with 99dB at 8ohm, Auto ON/OFF and 0 – 180 degree Phase control switches, Gain and 40 – 140 Hz Crossover control knobs
- Use for home theater and surround sound systems
- HOME THEATER LFE POWERED SUBWOOFER – Dedicated LFE or standard RCA inputs easily connect to your home theater receivers Subwoofer Output
- WHAT’S IN THE BOX – Acoustic Audio by PSW600-15 powered subwoofer, 9 foot dual RCA/LFE cable, RCA “Y” adapter, instruction manual – Standing sub with feet size is (H x W x D) 20.5″ × 18.5″ × 16.5″
- SYSTEM REQUIREMENTS – Standard US 110V grounded wall plug, any home theater receiver with RCA dedicated or LFE subwoofer outputs, home receiver or stereo with raw wire outputs
38. Yamaha Stage Subwoofer (KSSW100) -Subwoofers
By YAMAHA
- Compatible with Yamaha PSR Models: A3000/S970/S770/S670/EW410
- A compact subwoofer designed for keyboard instruments
- Incorporates Yamaha’s advanced, high performance bass technologies; Twisted Flare Port and Advanced YST II
- A stylish addition to any room
- 8″ cone woofer, 100 W of Dynamic Power (5 ohms), and 28-200Hz Frequency Response
39. Acoustic Audio PSW-10 400 Watt 10-Inch Down Firing Powered Subwoofer (Black) -Subwoofers
By Acoustic Audio by Goldwood
- WHAT’S IN THE BOX – Acoustic Audio by PSW10 powered subwoofer, 6 foot dual RCA cable, RCA “Y” adapter, instruction manual – Standing sub with feet size is (H x W x D) 12.4″ × 11.4″ × 12.4″ – NOT LFE Compatible
- Use for home theater and surround sound systems
- SYSTEM REQUIREMENTS – Standard US 110V grounded wall plug, any home theater receiver with dual or single RCA dedicated Subwoofer output, home receiver or stereo with raw wire outputs
- 10 INCH DOWN FIRING WOOFER – Long throw woofer with high rigidity PVA Treated cone, bottom slotted port, Bass Reflex cabinet design with vibration absorbing feet, high quality MDF with added internal bracing and black ash finish
- Save power with the added Signal Sensing Auto ON/OFF feature
- 400 WATTS PEAK POWER – Integrated high efficiency power amplifier, 25 – 250 Hz with 97dB at 8ohm, Auto ON/OFF and 0 – 180 degree Phase control switches, Gain and 40 – 140 Hz Crossover control knobs
- HOME THEATER POWERED SUBWOOFER – Standard RCA inputs easily connect to your home theater receivers dedicated Subwoofer Output
40. SVS PB-2000 Pro 12″ Ported Subwoofer (Black Ash) -Subwoofers
By SVS
- 12″ High–Excursion Driver
- 550 Watts RMS
- 1,500 Watts Peak Power
- SVS Subwoofer DSP Smartphone App Available
- Fully Discrete MOSFET Output
41. Monoprice – 135847 Ssw-12 Powered Slim Subwoofer – 12 Inch – Black with Ported Design, 150 Watts, Lowprofile Includes On-Wall Mounting Brackets -Subwoofers
By Monoprice
- Powerful amplifier: the ssw-12 is outfitted with a 150-watt amplifier signed specifically for subwoofers
- Service & support: Contact our technical support team for questions about our products, troubleshooting, or even Suggestions for products to fit your particular needs.
- With a frequency response that extends down to 20Hz, you won’t have to skimp on the bass.
- It features the ability to set volume, low pass filter, and is equipped with both line level RCA jacks and speaker level terminal inputs.
- Slim, low profile: the Monoprice ssw-12 features a ported cabinet that’s designed to deliver ample bass output from a slim, low profile enclosure
- 12″ Ported design: the ssw-12 features a full-sized 12″ Woofer housed in a ported, bass-reflex enclosure that is designed to maximize bass output from its slim, low profile design
- You can slide it 7.0″ Under your favorite chair or sofa, place it behind your TV stand, or even mount it on your living room wall.
- Quality at a fair price: Monoprice rugged design and rigid quality control standards deliver high quality products at fair prices.
42. Rockville Rock Shaker 10″ Inch Black 600w Powered Home Theater Subwoofer Sub -Subwoofers
By Rockville
- (MDF wood sounds better and lasts longer than particle board), High-grade vinyl enclosure covering with a beautiful finish, The enclosure is built with the perfect air space to maximize sound quality and punch, The rear firing port is engineered for optimal sound
- Specifications: Amplifier: Class D, Woofer Impedance: 4 Ohm, Signal to noise ratio: 85 dB (Maximum output with THD+1<1%, A-weight), THD: 1%, INPUT sensitivity: 88dB +/- 2dB, Frequency Response: 20 Hz – 200 Hz, 600 Watts peak output, 300 Watts RMS output, Voltage: 110-240V, Product Dimensions in Inches: (W*H*D): 12.6'' x 15.5'' x 16.5'', Shipping Dimensions in Inches: (W*H*D): 15.7" x 19.7'' x 18.5'', Unit Weight: 20 LBS, Shipping Weight: 24.5 LBS, Color: Black
- Inputs / Outputs / Controls: RCA line input, RCA line output, Speaker High level inputs, Speaker High level outputs, Volume control, Phase switch (0°-180°), Crossover Frequency control, Power switch, Standard IEC power cable included
- Class “D” Amplifier Circuitry with Auto-Switching Power Supply, High-grade woofer with foam surround and paper cone, Woofer has a Y30 grade magnet, and 1.5” 4-layer voice coil, Distortion-Free Playback Even at Max Volume Listening! Very Clean Sound!, Enclosure is filled with fire resistant poly cotton, Detachable foam grill
- Rear side of the subwoofer: Subwoofer (LINE) Jack in, Subwoofer (LINE) Jack out, Volume Control, Phase switch (0° – 180°), Frequency control, Power switch, Speaker high level in, Speaker high level out??
- Features: Rockville Rock Shaker 10 Black 600 Watt Powered 10″ Home Theater Subwoofer, 600 Watts Peak / 300 Watts RMS, Built-in Class D Amplifier, Enclosure is made of top quality MDF wood
43. Theater Solutions SUB8S 250 Watt Surround Sound HD Home Theater Slim Powered Active Subwoofer (Black) -Subwoofers
By Theater Solutions
- Save power with the added Signal Sensing Auto ON/OFF feature, slim 4.75″ height fits under or behind most furniture
- SYSTEM REQUIREMENTS – Standard US 110V grounded wall plug, any home theater receiver with dual or single RCA dedicated Subwoofer passive output, home receiver or stereo with raw wire outputs
- 8 INCH DOWN FIRING WOOFER – High efficiency Low Frequency woofer with high rigidity PVA Treated cone, bottom slotted port, Bass Reflex cabinet design with vibration absorbing feet, high quality MDF with added internal bracing and black ash finish
- WHAT’S IN THE BOX – Theater Solutions by SUB8S powered subwoofer, 6 foot dual RCA cable, RCA “Y” adapter, stand mounts, wall mount with hardware, instruction manual – Standing sub with feet size is (H x W x D) 4.75″ × 25″ × 16″ – NOT LFE Compatible
- 250 WATTS PEAK POWER – Integrated high efficiency power amplifier, 35 – 150 Hz at 8ohm with 24dB per Octave Crossover, Auto ON/OFF and 0 – 180 degree Phase control switches, Gain and 40 – 150 Hz Crossover control knobs
- Use for home theater and surround sound systems
- SLIM HOME THEATER POWERED SUBWOOFER – Standard RCA inputs easily connect to your home theater receivers dedicated Subwoofer Output
44. BESTISAN Sound Bar with Bluetooth 5.0, Wired Sound Bars for TV, Home Theater Audio Sound Bar with Sub-Out Port Works with Subwoofer (50 Watts, Bass Adjustable, Deep Bass, 20 Inch) 2022 Upgrade Model -Subwoofers
By BESTISAN
- Worry-free 12-month and friendly customer service, life time technical support
- Super Easy to Operate: Touch or Remote Control to adjust playback settings including volume and track selection as well as bass & treble settings
- 2022 Upgrade Model
- 20 Inch length, Small size to save space
- 3 Different Equalizer Modes: 3 sound modes (Movie, Music, Dialogue) via the remote control to match your favorite sound, under DIALOGUE mode, super-clear voices, even at low volumes
- Better than TV Sound: Driven by two 25 Watt 3 inch speakers and two bass reflex port, delivers more extended audio curve with deep bass which offers an entirely different experience of playing video games and watching movies
- Support powered subwoofer(Polk Audio, Klipsch, Yamaha etc.).
- Perfect works with Subwoofer:This AUX OUT port on the back that allows you to connect your existing subwoofer or headphone
- 5 Minutes Install: One connecting power cord and one connecting audio cord
45. Klipsch SPL-100 10″ Powered Subwoofer, Black -Subwoofers
By Klipsch
- 10 inches Long-Throw Cerametallic Woofer
- 450 Watts
- Wireless with optional Klipsch WA-2 accessory
- Included Components: Power Cord
- Maimum Acoustic Output 118dB
46. Monoprice 12 Inch 150 Watt Powered Subwoofer, Black (109723) -Subwoofers
By Monoprice
- 50 ~ 250 Hz Frequency Response
- 150 Watts RMS, 200 Watts Peak
- The splitter has an operating range of up to about 30 feet (10 meters)
- 12″ High Performance Powered Subwoofer
47. Klipsch SPL-120 Powered Subwoofer 12 inches, Black -Subwoofers
By Klipsch
- Maximum acoustic output 118dB
- Wireless with optional Klipsch WA-2 accessory
- 12 inches long throw cerametallic woofer
- Enclosure Material: MDF
- 600 Watts
21 inch home theater subwoofer – The Buyer’s Guide
You must have checked the above list, aren’t you mind-blown by the quality of products? Well, if you are then here’s a secret formula which we’ve used to choose them. You can use them too! The best part is, it works for all the product purchases you make! Besides, wouldn’t it be helpful to you, if you knew the factors we’ve considered to choose the 21 inch home theater subwoofer in the above list? So shall we begin with the guide and help you learn about the important factors?
1. Does it have the features you need?
Wait for a minute before you buy the 21 inch home theater subwoofer, check if it has all the features in your requirement list! If it doesn’t have them, then you should avoid buying that particular model and start looking for an alternative. We always suggest our editors to make a list of important features before adding a product to a list and based on the feature, the quality of the product, brand-assurance, rank it! So if it has all you need, you should not mind paying a bit extra. However, if you end up buying the best 21 inch home theater subwoofer which doesn’t have the feature you need the most, then it won’t make sense! Would it? To us, it wouldn’t! That’s why you should make up a list which includes the features you are looking for, technical specifications if any, etc and come up with a budget.
2. Budget and Price Match
Well, you obviously can’t buy the best 21 inch home theater subwoofer with a low budget. That’s why it’s important to make note of all the important features, specs, factors and come up with a budget. Once you are ready with it, look for the products which are either equal to your budget or are close to it. Stick to the budget, because while browsing, you’ll see a model which is slightly better and has an additional feature with a really small price difference. Well, in that case you’ll have to calculate the price of the product which has all the required features and the 21 inch home theater subwoofer with the additional features. See if the difference in amount is worth for the feature? If you don’t have second thoughts, you shall probably increase your budget.
3. Warranty and Brand
Most of the 21 inch home theater subwoofer industry experts we got in touch suggested us to always buy the one which comes from a reputable brand. They also explicitly asked us to include the best brands so that users don’t buy the models from unknown brands or non-reputable companies. Because 21 inch home theater subwoofer from an unknown brand might be cheap at first glance, but could have high-maintenance and could cost a lot in repairs.
Another benefit of buying a 21 inch home theater subwoofer from a reputable brand would be warranty. Most of the 21 inch home theater subwoofer from reputable brands come with good warranty. However, cheap products do come with a warranty, but claiming it can be a herculean task. That’s why buy the models which come from known brands and have good warranty.
4. Check for Reviews and Ratings
Back then when the Internet wasn’t as big as it is today, local stores charged high and even ended up selling the products which sucked or wasn’t future proof. It’s because the salesman threw technical terms and confused the buyer. But nowadays, there are sites like ours which does all the research and lists down the best models and there are eCommerce stores like Amazon which has user reviews which can be read to know the experience of the user with that particular 21 inch home theater subwoofer. Isn’t it great?
The Verdict
We hope that you loved the 21 inch home theater subwoofer we’ve listed in our best list. If it has been helpful, please bookmark our website and share it with people you know whenever they plan to buy something.
To wrap up this guide,
- If you are looking for the best 21 inch home theater subwoofer: You shall consider going for Polk Audio PSW10 10″ Powered Subwoofer – Power Port Technology, Up to 100 Watts, Big Bass in Compact Design, Easy Setup with Home Theater Systems Black
- If you want the one which has similar features to the best, then you shall consider going for Klipsch R-12SW Subwoofer
- If you want a 21 inch home theater subwoofer which is “value for money” then you shall go for the Definitive Technology ProSub 800 – High Output Compact 300W Powered Subwoofer | Heart-thumping sound for Home Theater System | (Single, Black) – | Descend Series Subwoofers | Discontinued by Manufacturer
- If you want the cheapest 21 inch home theater subwoofer then the BOSS Audio Systems CXX8 8 Inch Car Subwoofer – 600 Watts Maximum Power, Single 4 Ohm Voice Coil, Easy Mounting, Sold Individually should be the best one for your needs!
