Here are the best underseat subwoofers that are designed to provide deep and powerful bass for your car audio system. These underseat car subwoofers are compact and designed to easily fit underneath the car seat without occupying too much space. They also provide good volume and low-pass crossover for maximum bass and volume performance. These subwoofers have a sleek and modern design and even come with wired remote controls for easy handling. If you are looking for the best underseat subwoofers for your car, be sure to check out our top picks below!
Best Underseat Subwoofers – Our top 3 picks
| Top 3 Best Underseat Subwoofers | ||
| Kenwood KSC-SW11 | JBL BassPro | Rockville SS8P |
 |  |  |
| ✔️75 watts RMS ✔️Compact design ✔️Deep bass output
| ✔️125 watts RMS ✔️Class D amp ✔️Remote control
| ✔️100 watts RMS ✔️High-level outputs ✔️Auto-turn on
|
Compare the Best Underseat Subwoofers
| Picture | Subwoofer | Power Output | Dimension | Weight |
| Kenwood KSC-SW11 | 75W | 190 x 70 x 280 mm | 6.17 lbs |
| JBL BassPro | 125W | 17.2” x 14.8” x 6.7” | 10.36 lbs |
| Rockville SS8P | 100W | 14.1” x 8.3” x 2.8” | 11 lbs |
 | Kicker 11HS8 | 150W | 13.78” x 9.45” x 3.15” | 14 lbs |
 | Pioneer TS-WX130DA | 50W | 11” x 7-7/8” x 2-3/4” | 7.71 lbs |
 | Alpine PWE-V80 | 160W | 350 x 240 x 80 mm | 2.2 lbs |
 | Nakamichi NBF609A | 120W | 280 x 195 x 75 mm | 4.41 lbs |
 | Infinity BassLink | 125W | 13-9/16” x 2-7/8” x 10-1/16” | 17.6 lbs |
 | Sound Storm LOPRO10 | 100W | 15” x 9.75” x 3” | 16 lbs |
 | Alphasonik AS8DF | 200W | 12.09” x 5.7” x 9.45” | 12.97 lbs |
View the Best Underseat Subwoofers below
#1 Best Overall: Kenwood KSC-SW11 Underseat Subwoofer
Power output: 75 watts RMS, 150 watts peak
Dimensions: 190 x 70 x 280 mm
What we liked: Deep bass output, compact aluminium enclosure
What we don’t: Wiring kit not included for installation
The Kenwood KSC-SW11 is one of the best underseat subwoofers that’s designed to be compact and powered for car audio. This car subwoofer comes with an aluminium enclosure with 8-1/4” x 5-1/8” dimensions with a wired remote control to adjust the volume and variable low-pass crossover. This subwoofer has power rating of 75 watts (RMS) and a peak power of 150 watts. It’s also constructed with an aluminium die-cast frame with line RCA and speaker level input options.
Performance-wise, the Kenwood pumps out way more bass than expected from a small unit. It produces enough bass to fill your entire car with deep low-frequency response. This makes listening to EDM, rock and hip-hop music genres much more enjoyable. The bass response from this subwoofer exceeded our expectations and is more than enough to fill the missing bass from coaxial car speakers.
What we really liked about the Kenwood KSC-SW11, apart from their solid bass performance, is that it features a compact and low-profile design that occupies less space. You can easily place this car subwoofer underneath the seat in tight spaces or in your car trunk. The Kenwood subwoofer is also powered so there’s no need for an external amplifier.
Finally, the Kenwood KSC-SW11 underseat subwoofer comes with a remote bass control and power with ground wire harness for easy installation. The 150W subwoofer is ideal for car audio systems that require more bass performance – all you have to do is to wire the subwoofer to your car battery and connect it to your head unit using RCA cables to get started.
#2 Best Bass: JBL BassPro 125W Underseat Subwoofer
Power output: 125 watts (RMS), 250 watts (peak)
Dimensions: 17.2” x 14.8” x 6.7”
What we liked: Efficient Class D amplifier, remote controller
What we don’t: Only 250 watts peak
If you are looking for one of the best underseat subwoofers with plenty of bass, go for the JBL BassPro 125W subwoofer. This is essentially an 8-inch powered underseat subwoofer with a compact enclosure to save space in your car. It has a massive power output of 125 watts RMS and 250 watts peak power, and is powered by an efficient Class D amplifier. This car subwoofer also features a soft start turn-on, speak-level (high level) inputs with audio sense. There’s also an optional wired bass remote controller which you can use to control the bass and volume levels.
The bass from the JBL BassPro underseat subwoofer is pretty overwhelming. With the volume level maxed out and the bass-boost set at the half-way mark, this subwoofer can pump out incredibly deep and punchy bass that fills up your entire car with rich and vibrant sound. The bass fills up the entire car and sounds really impressive especially for a subwoofer of this compact size.
The overall built quality of the JBL BassPro 125W underseat subwoofer is solid. There’s also a wired remote which you can use to adjust the bass level and matches with the car interior. This underseat subwoofer is compact and easily fits underneath your car seat without any issues. If you are looking for a compact and powerful subwoofer for your car with standard input options, we highly recommend the JBL BassPro.
#3 Best Powered: Rockville SS8P 400W Underseat Subwoofer
Power output: 100 watts (RMS), 400 watts (peak)
Dimensions: 14.1” x 8.3” x 2.8”
What we liked: Durable exterior enclosure, high power output
What we don’t: Lacks mid-bass performance
The Rockville SS80 is a powered 400W underseat subwoofer that’s capable of producing massive bass performance. It is a slim under-seat active powered subwoofer that comes with an enclosure that is made from cast aluminium which stays cool during sound reproduction. This massive subwoofer has a peak power handling of 400 watts and an RMS power output of 100 watts. It laso comes with a PWN MOSFET power supply, low-level RCA inputs and high-level inputs with auto turn-on technology to save energy when not in use.
We really liked the sound performance of the Rockville SS8P subwoofer. When we paired this subwoofer to factory car door speakers, the sound is really good and the bass feels tight and punchy. You can also adjust the input sensitivity and set the low-pass filter to adjust the bass output and gain. While this subwoofer isn’t going to rattle your car windows, it does produce deep solid low notes that add a layer of low-end to your car component speaker setup. It produces bass that you can feel on your skin and does not distort at high volume levels.
The Rockville SS8P has a really compact enclosure that is only 2.8” thick and can easily fit under your car seat. The amplifier is built-in, so all you have to do is to wire this subwoofer to the head unit. There is also auto turn-on circuitry which will automatically detect when an audio signal is present and turn on the amplifier – which definitely helps to save car battery. We also liked the fact that this underseat subwoofer has level volume controls and a subsonic filter to filter out the low frequencies.
For those who want to adjust the sound settings even more, there’s a low-pass crossover filter, phase control input sensitivity and bass boost feature which you can use. The subwoofer also has a remote bass note that you can use to adjust the bass output.
#4 Best Budget: Kicker 11HS8 Underseat Subwoofer
Power output: 150 watts (RMS)
Dimensions: 13.78” x 9.45” x 3.15”
What we liked: 8 inch internal subwoofer, compact design
What we don’t: Only 150 watts RMS
The Kicker 11HS8 is one of the best underseat subwoofers with a 150 watts RMS power and delivers deep thumping bass performance. This subwoofer features an ultra-compact powered subwoofer design for tight and small locations, and can fit easily underneath your car seat. It also has a relatively compact dimension of 13-7/8 x 9-3/8 x 3-1/8 inches, and comes with an 8-inch built-in internal subwoofer. This makes it easy to place the Kicker 11HS8 subwoofer in a variety of locations in your car without compromising space.
The Kicker 11HS8 literally transformed the entire car audio system when we first tested this subwoofer out. It delivers quality and balanced bass performance which adds dynamic response to music performances. This subwoofer really rounded out the entire car system with heavier bass sound while keeping the gain on the subwoofer almost all the way down. You get really loud sound performance with deep bass that feels powerful and tight. Plus, the subwoofer is hidden compactly underneath the seat which makes everything look sleek and tidy.
We paired this underseat subwoofer with a Kenwood DD head unit and the sound improve is extremely noticeable. The bass from this subwoofer gets so loud that you can even hear rattling outside of your car – and all without any distortion. While it’s not an “audiophile” high-end sound system, it does add a lot of bass and improves the car sound system.
The Kicker 11HS8 subwoofer effectively combines an 8” subwoofer with a 150 watt amplifier to add thumping bass to your car. It also provides a quick connect Molex plug and harness for easy power, signal and remote control. There’s also a remote bass control to fine tune the bass output – this subwoofer has an adjustable low-pass crossover and a variable 6dB bass boost which provides plenty of customization options for your sound.
#5 Most Compact: Pioneer TS-WX130DA Underseat Subwoofer
Power output: 50 watts (nominal), 160 watts (peak)
Dimensions: 11” x 7-7/8” x 2-3/4”
What we liked: Good frequency range, Built-in Class D amp
What we don’t: Only 50W nominal power
The Pioneer TS-WX130DA is one of the best underseat subwoofers that comes in a compact design and delivers a good 160 watts of active bass. It also has a built-in amplifier with a 8” x 5.25” woofer and has really deep bass output. This subwoofer features a built-in Class D amplifier and has digital bass control technology which allows you to adjust the frequency response and change deep or dynamic listening modes. The phase and bass modes are also controllable with the included remote. This car subwoofer has a frequency range of 20 Hz to 200 Hz and 50 watts nominal power.
When we first tested out this underseat subwoofer, we were quite impressed with how much bass this compact subwoofer can deliver. It does take some time for this subwoofer to break in to get the best sound quality out from it. In fact, the bass from this subwoofer goes so deep that there are times when we had to deliberately turn the bass knob down. We particularly liked the fact that there is no need to run separate power from the battery as the subwoofer can run on a nominal 50 watts of power.
Do note that you will need RCA extension wiring if you want to hook up the underseat subwoofer effectively to your car audio unit. The bass from this subwoofer feels tight and deep, and really adds a layer of low-end frequency response to music and bass-heavy genres. That said, we did find that this subwoofer is more suitable for smaller cars as the bass response feels less pronounced when placed inside a larger car area.
#6 Best Value: Alpine PWE-V80 Underseat Subwoofer
Power output: 160 watts power output
Dimensions: 350mm x 240mm x 80mm
What we liked: Compact and lightweight
What we don’t: Variable low pass filter not quite responsive to adjustments
The Alpine PWE-V80 is one of the best underseat subwoofers that’s built like a tank with 160 watts of power output. It features a built-in amplifier with a variable low pass filter for crystal clear bass reproduction and deep frequency response. Furthermore, it also comes with a wired remote control for easy access, and is designed to be simple and easy to install. The entire subwoofer has a 100 watt RMS power rating and makes the other speakers in your car sound better while adding depth to music performances.
When we tested out the Alpine PWE-V80, the entire system sounds very powerful and well-defined with good bass output. It can easily reproduce frequencies down to 20 Hz which really brings out the best in EDM, rock and electric music genres. They bring some much needed low notes to music sound systems and can really pump out deep and solid bass without any muddiness or distortion at high volume levels. It also helps that the subwoofer comes with a wired remote control so you can adjust the bass output as required.
The Alpine PWE-V80 has a dimension of 350 x 240 x 80 mm which allows it to be easily mounted under car seats and installed in car boots without taking up much space at all. The build quality is solid and durable; the entire subwoofer feels like one piece of solid engineering and of high quality. For best sound performance, we would recommend installing this subwoofer with your head unit RCA outputs. Although it accepts speaker level inputs, it sounds much better when connected to the head unit.
Finally, we really liked the fact the Alpine PWE-V80 subwoofer comes with a wired remote with LPF phase and gain controls, input cables, cable connectors and mounting hardware for easy installation.
#7 Most Powerful: Nakamichi NBF609A 1000W Underseat Subwoofer
Power output: 120 watts (RMS), 1000 watts (peak)
Dimensions: 280mm x 195mm x 75mm
What we liked: High power output, with 1000W peak power
What we don’t: Requires more power and quality head unit
The Nakamichi NBF609A is one of the most powerful underseat subwoofers we have reviewed. It is essentially a slim car subwoofer with a RMS power of 120 watts and a peak of 1000 watts. It also features a compact design that allows the NBF609A to be installed in many places in your car and underneath the car passenger seat. It has a nice frequency range of 34 Hz to 400 Hz and a low pass crossover from 50 Hz to 150 Hz. We also liked that the subwoofer has a remote knob for easy adjustment and allows for RCA and head level inputs. This subwoofer has a compact dimension of 280 x 195 x 75 mm.
We were pretty impressed when we first tested out the Nakamichi NBF609A underseat subwoofer. It greatly improved the overall sound performance of the car, providing much deeper bass and a well-rounded response. We’d also recommend replacing the car head unit to improve the sound performance of the subwoofer and connect to the subwoofer with the RCA outputs. This subwoofer does produce lower bass notes with good precision and pretty thumping bass. It does add a little “fullness” to the overall sound signature and takes off the bass load from the main car speakers.
The installation process for the Nakamichi NBF609A subwoofer is as easy as it gets. All you have to do is place this subwoofer under the passenger seat and it does produce lower bass notes with deep sound and clarity. You can also adjust the low-pass crossover network to tune the bass according to your preferences. This subwoofer delivers the best bass experience around 60 Hz which is great for EDM and electronic music genres
#8 Best Slim Profile: Infinity BassLink SM 8” Underseat Subwoofer
Power output: 125 watts RMS
Dimensions: 13-9/16” x 2-7/8” x 10-1/16”
What we liked: Shallow-profile, easy to install
What we don’t: Not as much bass as we liked
The Infinity BassLink SM is one of the best underseat subwoofers with a slim profile for small spaces under your car seat. It is a subwoofer with 125 watts RMS of power, and comes with its own proprietor shallow-profile subwoofer driver for deeper bass performance. We also like that it comes with an ultra-compact purpose engineered ABS enclosure with a durable design. Furthermore, the Infinity BassLink is equipped with an efficient Class D amplifier and custom circuitry to provide optimal sound performance.
We found that this subwoofer has a very clean sounding mid-bass and solid thump. For an 8” subwoofer with a built-in amplifier, this subwoofer can really fill your car with rich and dynamic bass performance and complements factory car speakers well. Although the bass from this subwoofer isn’t going to blow you away, we really liked the overall sound quality and the balance that it provides to car music. They are also great subwoofers for midsize trucks and cars and rounds out the soundstage nicely.
This 8” subwoofer comes with a 2” deep enclosure and 150 watt Class D amplifier. It’s small and compact, and can easily fit underneath your car seat without any issues. We would recommend connecting this subwoofer to your car head unit for better sound performance. Overall, it’s a really good subwoofer that delivers solid and punchy bass and we highly recommend it especially for its slim profile design.
#9 Best Deep Bass: Sound Storm LOPRO10 Underseat Subwoofer
Power output: 100 watts (RMS), 1200 watts (peak)
Dimensions: 15” x 9.75” x 3”
What we liked: Variable low-pass filter, built-in amplifier
What we don’t: Adjustable bass knob feels slightly bulky
If you are looking for one of the best underseat subwoofers with deep bass, go for the Sound Storm LOPRO10. This underseat car subwoofer comes with a built-in amplifier with a MOSFET power supply for better sound performance with less power from the driver and lower impedance. It also comes with a variable low-pass filter with an electronic circuit that removes all the notes below the filter’s setting; this allows you to keep high notes out of the subwoofer for deeper bass performance. For better sound performance, we would recommend a break in period of 3-4 hours to allow the subwoofer’s voice coil to loosen up.
The bass from the Sound Storm LOPRO10 is really deep and punchy. It comes with a powered amplifier that delivers 1200 watts of max power and also has a variable low-pass crossover to improve the sound quality. The subwoofer produces good and clean sound with plenty of thump. Although it’s not enough to rattle the windows of your car, it does have some low frequency notes that can really add depth the overall music experience. There’s also a remote bass controller which you can use to adjust the bass output, which is really useful. It’s a subwoofer that delivers great sound while allowing you to retain precious car space.
The Sound Storm LOPRO10 comes with high level inputs to connect to your factory radio that does not have low-level RCA inputs. It also supports low-level inputs (including RCA) if supported by your car’s head unit. We like that this subwoofer features variable bass boost that allows you to adjust the low-bass within the boost range according to your references. The subwoofer has a slim profile with a dimension of 15” x 9.75” x 3” and fits in easily into enclosed car spaces.
#10 Best for Trucks: Alphasonik AS8DF 8” Underseat Subwoofer
Power output: 200 watts (RMS), 600 watts (peak)
Dimensions: 12.09” x 5.7” x 9.45”
What we liked: 200 watts RMS, slim profile design
What we don’t: Somewhat lacking in mid-bass performance
The Alphasonik AS8DF is one of the best 8” underseat subwoofer for cars and trucks that delivers solid bass output. It has a power rating of 200 watts RMS and a peak power of 600 watts max. The subwoofer cone is made from spun aluminium and the surrounds are made from high strength rubber for improved durability. The subwoofer has a low impedance of 4 ohms and also features a copper wound Kapton voice coil. It has a sensitivity of 92dB and a nice low frequency range from 26 Hz to 500 Hz. The AS8DF underseat car subwoofer has a dimension of 12.09″ x 5.7″ x 9.45″.
Despite its shallow subwoofer enclosure, this subwoofer performs very well by adding a realistic low-end for music listening and sounds really good. We didn’t even need to use the bass boost options on the car receiver as the bass from this subwoofer is deep and punchy. The bass from this subwoofer is solid and punchy; you can set the crossover at 90 Hz and it will deliver all the low frequencies needed for bass-heavy music genres such as EDM and rock. The power handling of this subwoofer is definitely much more powerful than your standard underseat subwoofer.
The Alphasonik AS8DF has an AS down-firing enclosure which optimizes bass response with greater efficiency. The sleek design of the AS enclosures allow for installation anywhere in your vehicle, and can also be installed vertically or horizontally. We liked the durable MDF wood construction which helps to reduce vibrations and improve the overall bass performance. The spun aluminium cone stays rigid even with the most powerful bass notes and does not distort at high volume levels.