How to Get Some Great Bass When You Don’t Have the Space for It? Check Out My Best Under Seat Subwoofer List


Welcome to the best under seat subwoofer awards!

After spending the last 12 days mounting, wiring, fine-tuning, breaking in and turning my car seat into a back and butt massager meanwhile skipping on house chores (sorry honey…), I’m ready to reveal which are the very best under seat subs on the market.


Finding the perfect under-seat woofer comes down to two things, the space available and your budget. As soon as you know these, it will be a breeze to find that perfect sub.

I’m ranking these 5 champion subs by size, weight, ease of install and the amount of bass they produce.

You see, for more than 20 years, I’ve been installing and upgrading car stereos. I’ve moved beyond a job into the passion territory. I’ve thought it would be helpful if I dig into my experience and share with you which are the best subs for under-seat fitting. I’m doing the heavy lifting to save you a ton of time. Pick any of these champions, and you can rest assured that it will deliver the best bass experience for your ride.

Let’s feel some thump, thump already!


#1 Alpine Electronics PWE-S8 – Best Overall Under Seat Sub

And we have a WINNER!

From all the subs on this list, this is the reigning champion. It has so many great points, so no wonder it’s #1 on my list. Not even Alpine can get around the laws of physics. It’s an 8” sub with a slim design and still manages to create a serious boom. It’s rated at 120 Watts RMS.

It gets the job done amazingly well. Even though it’s mean to be hidden under the seat, it still has the looks. You will be able to enjoy some great sound quality without sacrificing the trunk. Groceries have the full trunk while this sub can rest under the seat.

The installation isn’t hard, plus there’s a built in amp, so you don’t have to spend a few weeks just to find something compatible. The rugged construction will allow you to use it for many years to come.

This is why it’s top of my list:

Built to last: the rugged construction means that it can take some off-road abuse no problem.

Wow Factor: all you have to do is add this sub to your system, and your speakers will come alive.

Compact design: it’s a small one, so it will fit under or behind the seat, a great way to get a massage while you’re driving

A few drawbacks that I’ve encountered:

I’ve noticed that this sub starts to struggle at the low end. With this Alpine woofer, the limit is 35Hz. Nothing comes through below that threshold.

It might’ve been just me, but there weren’t enough brackets to mount this woofer.

Alpine did a great job with this subwoofer, so no wonder people are installing it left and right. My share of rides where I’ve installed it is: Nissan Hardbody, Tacoma, 4Runner, Silverado, Tundra Crewmax and many others.

Since it’s a best-seller, I’m not surprised that the stocks are limited. Last time I’ve checked only a few left remaining. So make sure that you order instantly if there’s one there or someone else will grab it from you.

If you want something a bit cheaper, then check out #2 on my list below.


This sub brings the speakers alive it’s the ultimate wow factor

If you want clean bass without sacrificing space, this is the right choice

Rugged construction made out of cast metal so it can handle some abuse


It struggles when it has to go down below 35hz

There aren’t enough brackets for mounting


#2 Rockville RW8CA – Best Affordable Under-Seat Sub

Even if you have a small ride, you can get that concert feeling with this woofer. I know many have taken a chance on this sub, and it delivers. It’s an 8” Rockville woofer rated at 150 Watts RMS. Besides these stats, it’s powerful and punchy.

As a matter of fact, this sub is loud without being loud. It rounds out the car stereo so you can enjoy the very best sound.

If you mount it to the back of your seat, you will enjoy some good vibrations. This is the perfect combination for those who want rich and deep bass at the same time.

Here’s why it’s a must-buy:

More than it meets the eye: this is quite an impressive sub for being a small and slim one. It can kick some ass.

Perfect for any music genre: no matter your music preference, all the songs are clean.

A discrete Sub: it’s nice and loud inside; however, if the windows are up, nothing leaks out, so no disturbance.


A few drawbacks that you have to know about:

If you’re looking for window-shattering bass, then you have to look somewhere else. This sub wasn’t meant to do that.

It has an annoying blue LED light which will be distracting at night if it’s not hidden under the seat.

You’re getting an amazing quality at a great price, so no wonder it’s selling like hotcakes. I’ve installed it in quite a few rides like Tacoma, Jeep Rubicon, Honda Civic, Tundra, Fiat 500, to name a few.

Since this Rockville sub is so popular, the stocks are almost always empty. If you find one, then grab it and run with it, or you risk waiting for a few weeks until the next shipment arrives.


Low profile sub that is ideal for small cars or minimal space

Powerful and punchy bass as if you would be on a concert

Besides being a sub, it can be used as a great massager


The bass isn’t that powerful

The blue light might be distracting during the night.


#3 Kenwood KSC-PSW8 – Best Enclosed Under-Seat Sub

I’ve almost passed over this sub by accident. I’m glad that I didn’t because this little one hits hard. Even if it’s an 8” sub, it’s rated at 150 Watts RMS.

If you have realistic expectations, this sub will deliver perfectly. Not only it hits hard, but the lows are perfect as well. If you’re accustomed to your factory system, don’t be surprised to hear new notes with this Kenwood woofer.

Many clients of mine told me that their commute is more enjoyable thanks to this sub. The main selling point for this sub is that you don’t have to sacrifice any trunk space. Since it has a slim design, it fits anywhere to deliver some well-deserved bass.

Here’s why it’s a must-buy:

Bass if you have no space: the factory system is typically weak at best, and now, even if you have no space what so ever this Kenwood is here to give you the bass you need.

For more high rated subs take a look at best bass subwoofer for car.

For the perfect lows: if you’re missing the lows, this Kenwood sub will more than makeup for it. You can enjoy your favorite music with newfound sounds.

Finally, a great remote: say goodbye to flimsy and cheap plastic remotes; this is a beauty and will keep you safe while driving.

A few drawbacks that you have to know about:

Depending on your vehicle, it might be a bit tedious to mount, while for others, it’s a breeze.

You should set your expectations accordingly. It’s an 8” sub, and it has a slim design so that it won’t rattle your teeth.

It’s a popular woofer. I had my hands full with this one. So many clients picked it that it’s almost impossible to remember all the vehicles like: Chevy Crew cab, BMW X3, Toyota Yaris, Silverado, Ford F150, Nissan Hard Body, Jeep Wrangler and Chevy Bolt, to name a few.

For small cars, this is a keeper, so no wonder why the stocks are low. The last time I’ve checked, there were only a few available so grab one while you can.



It has an ultra-thin profile while banging hard

It hits the lows perfectly, and it rounds out the sound system nicely

Excellent remote control knob to adjust the bass on the fly for every song



It’s not that easy to mount if you don’t have the right harness

Too bad it’s just an 8-inch sub


#4 Rockville SS8P – Best Under-Seat Bundle Sub

Boys, we might have a sleeper sub over here. In most cases, under-seat 8” subs aren’t that powerful. However, this might be the exception to that rule. This Rockville sub, besides having a slim profile it’s rated at 100 Watts RMS, and it’s stronger and louder than expected.

Don’t get me wrong, you won’t do any hair tricks or rattle the neighbor’s windows, but you are getting a strong bass-producing clean and crisp sub. Best of all, you get everything you need to set it up in your car. There’s a wiring kit included with a built in amp and enclosure while at a ridiculously low price. As a matter of fact, it’s a steal.

The highs and the lows are clear, and you get a one-year no-questions-asked return warranty. Can you ask for more?

Here’s why it’s a must-buy:

Audiophile Approved: the bass is clean and crisp, and it rounds out the system nicely.

It won’t provoke road rage: the bass isn’t strong enough to piss off people at the stoplight; however, you can feel it on the inside.

Inexpensive bass: if you’re on a budget, then this sub is the right choice for you. For a hundred a few dollars, you get everything you need for a great sounding system.

A few drawbacks that you have to know about:

This is an under-seat subwoofer which means that if you put it in the trunk, you won’t hear or feel anything. Keep this in mind.

For some reason, manufacturers love to put some insanely bright blue LEDs in the subs. Normally it’s not a problem if it’s under the seat, but if it’s in plain view, it’s distracting.

She’s a keeper because I’ve installed it in so many cars that I’ve lost count. Here are a few from my list of happy customers: Honda Accord, Jeep JK, Nissan Murano, Subaru Forrester, Tacoma, 95 Mustang, Tundra, Jeep Liberty and Ford F-150.

Since you’re getting an insane deal at this price no wonder, Rockville has problems keeping this sub in stock. Just in case it’s out of stock, do come back later because they get new shipments all the time.


It won’t shake the rust off the car, but it will give you a well-rounded system.

The bass is strong enough to turn your seat into a massage chair

It’s a ridiculous deal you get everything at such a low price


The wiring kit could be better. You’re better of with heat shrink materials

The remote control volume is made out of cheap flimsy plastic


#5 Kicker 11HS8 – Best Under-Seat Sub for a Small Car

This is the perfect hideaway sub if you’re afraid that thieves would steal it. It’s small and compact, so you can easily put it below the driver or passenger seat.

It’s an 8 inch Kicker sub that has 150 Watts RMS rating. To my surprise this baby slaps. Of course, it can’t compete with bigger and more power-hungry subs, yet the space-saving shape is well worth it.

The installation is super easy. A professional is not needed. You can get by with the help of YouTube.

All in all, it’s a great sub to own. The hideaway aspect is a major selling point for many, plus it delivers the perfect lows for a great-sounding ride.

Here’s why it’s a must-buy:

Compact sub: it has a small profile to fit just about anywhere, even in the smallest vehicle.

Enjoy the lows: this sub is perfect for the lows, so if you enjoy deep bass music like rock and hip hop, here’s your winner.

Perfect bass inside: if the windows are up, there’s nothing leaking out, so no disturbing the neighbors.

A few drawbacks that you have to know about:

You will need an expert to dial this baby in. To get the best performance out of it, you need to take your sweet time to make it perfect.

As expected, there’s isn’t that much boom for an 8” under-seat sub; still, it’s more than enough for a small vehicle.

This is the preferred sub for many, so no wonder I was putting in overtime to install them. Here are some vehicles which are thumping with this sub: Ford F150, Suzuki x90, Tacoma, Lexus, Hilux Surf, Jeep Wrangler, to name a few.

Since this is a very popular sub, people are going nuts, and the stocks are almost always depleted. If you are lucky and see one in stock, pounce on it or risk waiting for weeks on end.


This is a small footprint compact sub that has the bump that you’re looking for

If you want to enjoy a rich audio experience, you have found the perfect sub it plays anything from rock to hip-hop.

It’s the perfect sub. It can’t be heard when the windows are up, and it’s punchy inside.


This sub comes with a very short remote wire, so you will have to upgrade

Dialing takes some time to eliminate distortions


Conclusions for the best under seat subwoofer

We have reached the end of this subwoofer award show. By now, you should know which one of these woofers is the best subwoofer fit for your taste and your vehicle.

I have ruthlessly eliminated all subs that weren’t up to my standards. That’s why my list is short. I hope you had a blast reading through my reviews. I had a great time testing them for you.

As you have read before, many of these are close to being out of stock, so you need to take action and buy it if they are available.

If you have questions or tips, you know where the contact button is.

Roger and out!

Frequently Asked Questions (FAQ):

Are underseat subwoofers any good?

Yes underseat subwoofers are good subs especially if you don’t want to sacrifice trunk space. These underseat woofers create a unique sound since they support the low frequency bass. Plus they don’t need that much power yet the power output is high.

What is the best subwoofer for deep bass?

The best subwoofer for deep bass is as follows:

  1. Rockford Fosgate P300-12 Punch 300 Watt Powered Loaded 12-Inch Subwoofer Enclosure
  2. Pioneer TS-WX130DA Compact Active subwoofer
  3. KICKER 44CWCS124 CompC 12 Inch 600 Watt 4 Ohm Single Voice Coil Car Audio Subwoofers with Polypropylene Cone and Polyurethane Surround

What is the best all around subwoofer?

My best all around subwoofer would be the Rockford Fosgate P300-12 Punch 300 Watt Powered Loaded 12-Inch Subwoofer Enclosure.

Where should underseat subwoofer be placed?

As the name suggests the underseat subwoofer should be placed under the seat. The decision is if you put it under the driver or passenger side. This depends on preference.

What is the frequency response for the best underseat subwoofer list?

The frequency response (frequency range) for these best under seat subwoofers is as follows:

  1. Alpine Electronics PWE-S8 Restyle Compact Powered 8-Inch Subwoofer 120 watt rms power (power rms), 240 watt maximum power; frequency response: 32 – 150 Hz
  2. Rockville RW8CA 8″ 600 Watt peak power (active power) Under-Seat Slim Amplified Car Subwoofer; frequency response: 20 – 150 Hz
  3. Kenwood KSC-PSW8 250W Maximum power (150W power rms, rms power) Single 8″ Under Seat Powered Subwoofer Enclosure wired Remote Control; frequency response:  35 – 150 Hz
  4. Rockville SS8P 400 Watts of peak power Slim Under-Seat Powered Car/Truck Subwoofer Sub+Amp Kit; frequency response: 20 -150 Hz; low frequency response
  5. KICKER 11HS8 8″ / Kicker Hideaway Car Audio Powered Subwoofer Sub Enclosure HS8 150W  power handling; frequency response: 25 – 120 Hz

Which powered subwoofer didn’t make the best under seat subwoofers list?

This powered subwoofer didn’t make my list: kenwood ksc sw11 compact powered subwoofer, kicker 11hs8 low profile car subwoofer , rockford fosgate under seat subwoofer, rockville rw10ca 800 watt slim and compact, cerwin vega slim subwoofer (compact subwoofer), sound storm 10 inch subwoofer with powerful bass that includes a wired remote (comes with a remote), under seat subwoofer alpine.

What should you check out when you’re buying a new compact powered subwoofer or car audio sound system?

When you’re looking for some new under seat subwoofers these features are the most important ones: variable bass boost, pwm mosfet power supply, variable low pass filter, wired remote control, adjustable input sensitivity, cast aluminum enclosure, easy to install, thermal protection circuit short protection circuit, subsonic filter, excellent sound quality, input sensitivity, aluminum enclosure, speaker level inputs, bass control, phase control, class d amplifier, remote bass knob,  auto turn on tech, phase switch, compact design, adjustable low pass filter, low pass crossover, remote bass, rca inputs.

Which are the best powered subwoofers on the market?

Finding the best powered subwoofer available in the market is not an easy choice. You can pick up rockville rw10ca 10 inch 800 watt aluminum enclosure and speaker level inputs or kicker 11hs8 8 inch car subwoofers 200 watts rms phase control for deeper bass. The remote control comes handy when you want to adjust the bass boost on the fly. Also stay away from the peak power (watts peak) number because that’s not realistic look for something like 75 watts rms or 200 watts rms. For accurate bass you will need low level rca input (rca inputs) and phase switch. Fit accurate bass, quality sound and a great audio system you can always with this under seat subwoofer rockville rw10ca 10 inch auto turn on 800 watts (800 watt) peak power mosfet power supply,  or 200 watts rms bass boost.

How thick should under seat subwoofers (under seat car subwoofer) should be?

Typically for the best fit the under seat subwoofers (under seat car subwoofer) should be less than 3 inches thick. For the best experience you can install it under the driver’s seat or passenger’s seat.

Should I go with 8 inch or 10 inch under seat subwoofers (under seat car subwoofer)?

Both  8 inch and 10 inch under seat subwoofers (under seat car subwoofer) are a good choice. It really comes down to your available space (under car seats) and budget. Here’s what you need to know about the best under seat subwoofers they are easy to install. It’s almost plug and play. If you can get one that has 800 watts that’s more than enough. These features are an absolute must for the best under seat subwoofers: auto turn technology, variable low pass filter and low pass crossover, adjustable input sensitivity, cast aluminum surroundings, easy to install,  remote sub level, car seat fit. Also ignore the peak power rating.

Are the best under seat subwoofers truly the best?

Yes the best under seat subwoofers are the best of the best. I’ve tested a more than a dozen of subs and left with 5 champions. These will fit under most car seat.

Last Updated on August 25, 2021

About Danny Reid
About Danny Reid

Danny here, no matter in which market you’re in it’s flooded with products. Maybe you want a new stereo, amps, speakers or subs? This is why the blog exists to cut through the clutter.
My goal with the reviews is to inform you of the best possible to make the right decision.
Plus if you’re stuck with “the blue wire is connected to???” I have many hot tips to get you out of a jam.