The 7 Best Truck Subwoofers – [2020 Reviews & Guide]

If you’re looking to improve your truck’s sound system, there’s no doubt that a high quality subwoofer is one of the first things you’ll need to find. Capable of capturing the lowest frequencies of sound waves, such as bass and sub-bass, a good subwoofer will help you experience the full range of your music and media.

But just how do you pick the optimal one for you and your truck? What separates the bad from the good? Well, that’s where we come in! We’ve tested and reviewed the top truck subwoofers to help you take your in-transit listening experience to the next level.

Best Truck Subwoofer

 Kicker 4-Ohm SubwooferRockwood Fosgate SubwooferKicker CompRT Truck Enclosure
editors choice
Speaker Size12 Inches8 Inches8 Inches
Max Output Power1000 Watts150 Watts600 Watts
OHM Release4-OHM4-OHM4-OHM
Enclosure Dimensions21.6 x 6.7 x 13 Inches14 x 9 x 3 Inches24 x 12 x 6 Inches

For more of my top gear recommendations, have a look through these popular Outside Pursuits guide links: LED Headlights For Trucks, Jeep Roof Racks, Tire Chains. 

Quick Answer: The 7 Best-Rated Truck Subwoofers

  1. Kicker 4-Ohm Slim Shallow Subwoofer
  2. Rockwood Fosgate Loaded Enclosure Subwoofer
  3. Kicker CompRT Sealed Truck Enclosure 
  4. Rockwell RW10CA Car Subwoofer 
  5. Rockwood Fosgate Shallow Subwoofer 
  6. Kicker Comp Loaded Subwoofer Box 
  7. Alphasonik Down Fire Subwoofer

Our reviews of the top rated truck subwoofers with our comparison table and buyers guide will help you choose the right one for you.

Truck Subwoofer Reviews

Let’s start our list off strong with the Kicker 4-Ohm Dual Subwoofer.

This is a reflex subwoofer, meaning it channels sound from its rear diaphragm, which further enhances low-end frequencies.

It comes loaded into an enclosure box that is 7 inches deep, and built with thick MDF (medium-density fiberboards) to endure even the bumpiest of rides.

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It’s also designed with a unique temperature management system to prevent overheating!

In regards to sound quality, this is a pretty powerful option, with a max power of 1000 watts, an RMS of 500 watts, and a final impedance of 4 ohms.

As Kicker’s slimmest subwoofer option to date, it can easily fit in your car’s back dash or behind its seats.

With this model, you won’t have to sacrifice comfort or storage space to enjoy a deeper, cleaner bass. No wonder its one of the best truck subwoofers available today!

Ohm Slim Shallow Subwoofer at a Glance:

  • Speaker Size: 12 Inches
  • Max Output Power: 1000 Watts
  • OHM Rating: 4-OHM
  • Enclosure Dimensions: 21.6 x 6.7 x 13 Inches

Rockwood Fosgates’ Punch PS-8 consists of a single 8 inch subwoofer in a custom sealed enclosure.

Unlike many competing models, this one comes with a built-in Class D amplifier, so you won’t have to make any additional purchases to get that supreme bass you’ve been searching for!

With this all-inclusive system, you’ll just need a power source and signal to enjoy enhanced bass quality.

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The Rockwood features adjustable 12 db low pass crossover, a built-in adjustable bass boost EQ, hi / low – level inputs and an integrated 0°/180° phase switch. 

It even includes a remote for touch-free bass control, and a full 1-year warranty upon purchase.

This brand is a global leader in audio innovation, and this model is no exception. No wonder its one of the best subwoofers we’ve seen yet!

Rockwood Fosgate Loaded Enclosure Subwoofer at a Glance:

  • Speaker Size: 8 Inches
  • Max Output Power: 150 Watts
  • OHM Rating: 4-OHM
  • Enclosure Dimensions: 14.4 x 9.4 x 3.3 Inches

Next up, we have the Kicker CompRT Sealed Truck Enclosure Subwoofer.

This unit includes an 8 inch single subwoofer, pre-loaded into a top-notch Kicker enclosure with a passive radiator. The result is bigger and better sound in an instant!

Covered in stylish black carpeting and built with thick MDF, this sturdy enclosure can handle whatever your truck throws at it – and can slide discreetly under a seat at the same time. 

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This model doesn’t lack in sound quality either, featuring a max output power of 600 watts, an RMS of 300 watts, a sensitivity of 85.5 decibels, and a 4-ohm total impedance.

Match it with a KX Amplifier (sold separately) for big power in a small footprint.

You definitely won’t regret purchasing one of the best subwoofer boxes on Amazon!

Kicker CompRT Sealed Truck Enclosure at a Glance:

  • Speaker Size: 8 Inches
  • Max Output Power: 600 Watts
  • OHM Rating: 4-OHM
  • Enclosure Dimensions: 24 x 12 x 6 Inches

The Rockwell RW10CA is an all in one solution for great sounding bass in your truck without sacrificing space.

The sub enclosure is only 2.7 inches thick, which is over 2 times slimmer than many competing models! You’ll be able to slide it easily under your seat without a problem.

With 800 watts of peak power, 200 watts RMS, a sensitivity of 90 decibels and an impedance of 2 Ohm, this is one of the most powerful underseat subs on our list.

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This model comes with all the bells and whistles, including thermal and overload protection circuits, a low pass filter (50 – 150 Hz) and a bass boost between 0-18 decibels at 45 Hertz.

It even comes with a remote control so you won’t have to lift a single finger to customize your sound controls. 

All things considered, this is one of the best truck sub boxes on our list.

Rockwell RW10CA Car Subwoofer at a Glance:

  • Speaker Size: 10 Inches
  • Max Output Power: 800 Watts
  • OHM Rating: 2-OHM
  • Enclosure Dimensions: 12.4 x 13.4 x 2.7 Inches

Moving on, we have another Rockwood Fosgate product on our list – the Shallow Subwoofer.

This model sports a high-flow, low-noise port design, with a thick 5/8-inch MDF enclosure. It’s sturdy enough to handle whatever terrain you decide to take your truck on.

The 12 inch subwoofer offers increased sound quality and better fidelity at an affordable price.

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With a maximum output power of 500 watts and an impedance of 2-ohm, you’re guaranteed to get the bass you deserve.

Pair it with a Rockwood Fosgate amp (sold separately) for a sound system match made in heaven.

This is one of the best subs for trucks that can be bought on Amazon.

Rockwood Fosgate Shallow Subwoofer at a Glance:

  • Speaker Size: 12 Inches
  • Max Output Power: 500 Watts
  • OHM Rating: 2-OHM
  • Enclosure Dimensions: 13.5″ x 27.375″ x 5.25″

The Kicker Comp Loaded Subwoofer Box is one of the best-sounding bass enhancers you’ll find at its price point.

With a max output of 300 Watts, an RMS of 150 Watts, a sensitivity of 88.3 decibels and an imepdance of 4-ohm, it is guaranteed to provide that seat-shaking bass you crave.

Its thoughtful design features a high-temp coil wire, a vented pole piece for heat control, a strong steel basket and a super-rigid, injection-molded cone for maximum strength.

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Made for quality, the Kicker features a high-temp coil wire, a vented pole piece for heat control, a strong steel basket and a super-rigid cone for maximum strength.

Just pair this with an amplifier to complete a great quality sound system at an unbeatable price.

This is one of the best 12 inch subwoofer boxes on the market today.

Kicker Comp Loaded Subwoofer Box at a Glance:

  • Speaker Size: 12 Inches
  • Max Output Power: 300 Watts
  • OHM Rating: 4-OHM
  • Enclosure Dimensions: 20 Inches x 15 Inches x 7.5 Inches

Let’s round out our list with what many call the best sub box on the market – the Alphasonik Down Fire Subwoofer.

This model is designed with the subwoofer facing downward, which optimizes the bass response for a richer and deeper sound.

You’ll be able to install it anywhere in your vehicle, whether vertically or horizontally. Durable MDF construction also reduces vibration while keeping sound quality intact.

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The Alphasonik’s enclosure is built for strength and longevity. It is constructed with a special bonding sealer which increases joint strength and bass reflex.

The result is a clear and well-rounded sound that doesn’t skimp on low frequencies.

This model produces extreme bass with minimal space, making it one of the top contenders on the market.

Alphasonik Down Fire Subwoofer at a Glance:

  • Speaker Size: 12 Inches
  • Max Output Power: 1500 Watts
  • OHM Rating: 4-OHM
  • Enclosure Dimensions: 20 x 6.7 x 14 Inches

Truck Subwoofer Comparison Table

Subwoofer Speaker SizeMax Output PowerOHMEnclosure DimensionsRating
Kicker 4-Ohm Slim Shallow Subwoofer12"1000 Watts4-OHM22" x 7" x 13"4.8 / 5.0
Rockwood Fosgate Loaded Enclosure Subwoofer8"150 Watts 4-OHM14.4” x 9.4” x 3.3”4.0 / 5.0
Kicker CompRT Sealed Truck Enclosure8"600 Watts4-OHM24" x 12" x 6"4.6 / 5.0
Rockwell RW10CA Car Subwoofer10"800 Watts2-OHM12" x 13" x 23"4.4 / 5.0
Rockwood Fosgate Shallow Subwoofer12"500 Watts2-OHM13.5" x 28" x 5.25"4.3 / 5.0
Kicker Comp Subwoofer Box12"300 Watts4-OHM20" x 15" x 7.5"4.2 / 5.0
Alphasonik Down Fire Subwoofer12"1500 Watts4-OHM20" x 6.7" x 14"4.1 / 5.0

How to Choose the Best Truck Subwoofer – Buying Guide

best subwoofer
Kicker CompRT Subwoofer vs. AlphaSonik Subwoofer

Now that we’ve gone through the best subwoofer boxes on Amazon, it’s time to decide which will offer the ideal listening experience for your sound-system needs.

The world of sound equipment can be intimidating, with so many different accessories and a plethora of confusing terms to describe them.

That’s why we’ve put together this comprehensive buyers guide – it will make key aspects of the selection process simple and digestible.

By the time you’re done reading, you should have no doubts about the best possible option for your truck!

Size & Enclosure

As in most cases, size matters!

The size of your subwoofer is a key determinant of how loud and low your sound can go.

Generally, larger subwoofers will produce better bass. However, depending on the size of your vehicle, you may face limits in terms of scaling up.

Be sure to take measurements of your space before you invest in a product.

The enclosure your subwoofer comes in will also have a large impact on the sound it’s capable of producing.

All the options on our list have sealed enclosures, which guarantees that they’ll produce a deeper bass level than competing options.

This is because the enclosure traps sound within, thus keeping the bass levels tight and accurate.

With that said, sometimes a smaller subwoofer in a sealed enclosure will produce better sound quality and deeper bass than a larger subwoofer in an open enclosure.

It is open enclosures which cause that infamous, fart-like bass vibration. This is because they are mounted to a board inside the trunk, rather than sealed off.

Besides open and enclosed, there are also other options, like ported and bandpass subwoofers. These are good options if you aren’t fussy about accuracy in your low-end frequencies.

Power & Sensitivity

Power and sensitivity are measured by max output, RMS (root mean squared – or the average level of a varying sound signal), and sensitivity (also known as SPL or sound pressure level.)

RMS indicates the power handling characteristics of your subwoofer. Basically, the higher the RMS value is, the higher the intensity of the bass you’ll get.

On the other hand, sensitivity measures the efficiency of your subwoofer – in other words, how much power it needs to produce sound at a given volume.

Subwoofers with a high SPL need less power to produce high volume sound, and vice versa.

Frequency & Impedance

Frequency indicates the range of sounds the subwoofer can register and reproduce.

You’re probably on the hunt for a subwoofer because you care about hearing the lower range of your music – so look for a product with low frequency capacity to guarantee it can pick up on all that bass.

Keep in mind that the enclosure you go for can also significantly impact the sound production.

Therefore, frequency numbers might not accurately reflect what you hear if you have an open, ported or bandpass subwoofer.

You must also look at the impedance, measured in ohms. This refers to the electrical resistance of the subwoofer.

What does that mean?

Low impedance means the speaker receives more electrical signals, therefore improving sound accuracy. In contrast, high impedance means less accurate audio fidelity.

This is a relatively simple concept, but it can be complicated depending on varying features of your subwoofer, like its wiring, voice coils, enclosure, and so on.

However, only a basic understanding of these features is required to make an informed decision.

Subwoofers & Amplifiers

Regardless of how high your subwoofers RMS and sensitivity are, or how low its impedance, its pretty worthless without an amplifier to match.

Amplifiers power subwoofers. So you’ll have to find an amplifier with capacities that can match the subwoofer’s specifications, in order to work well together.

There are many complex factors which determine the compatibility of your amplifier and subwoofer. But the simplest way to tell is by checking the RMS rating.

Both subs and amps have an RMS watt range rating, which indicates the minimum and maximum power ranges they both can handle.

Making sure they match is the easiest way to guarantee good sound quality.

For a more detailed explanation, check out this audimotive guide.


Taking good care of your subwoofer is the only way to guarantee its longevity.

You’ll have to protect it from everyday factors like water damage, extreme temperature fluctuation, and wear and tear from bouncing around in your truck.

If you don’t, you’ll run into the most common issues with subwoofers – distorted sound, reduced sound, or no sound at all!

The most popular sources of trouble for subwoofers are the cone, voice coil and the fuse.

The main culprit of coil and cone damage is music played too loud – in extreme cases, if the volume is too high, the coil and cone can disconnect from one another, resulting in a blown out subwoofer.

To check if you have a blown out subwoofer, just press down lightly on the cone. If its rigid and locked, it is blown out!

Fortunately, the cone, coil and fuse are all replaceable parts, so the damage can be fixed! Check out the video below for more details on how to deal with a damaged subwoofer.

How To Repair A Damaged Subwoofer


FAQs About Truck Subwoofers

Q: What is a subwoofer?

A: A subwoofer is a special kind of loudspeaker which is designed to transmit low pitched audio frequencies, such as bass and sub-bass.

Q: Do subwoofers improve sound quality?

A: Subwoofers improve sound quality by picking up on the lowest frequencies of your music / media, those that traditional two-channel sound setups can’t reproduce.

With a good subwoofer, you’ll be hearing the whole range of sound – and feeling it too.

Q: Do subwoofers work in trucks?

A: Subwoofers work great in trucks!

Ideally, you should place your subwoofer under your truck’s rear seat, pointing towards the back wall.

This will cause the sound waves it produces to bounce off the rear end of the vehicle, thus offering optimal frequency and sound quality.

Q: How large should a subwoofer be?

A: This depends on a range of different variables – how big your truck is, how much space you have, what enclosure your subwoofer comes in, just to name a few.

Generally speaking, the larger the subwoofer is, the better the sound quality is. But, the enclosure can also modulate the sound, as well as the amp you go for.

Take all these factors into consideration before deciding on a size.

Getting the largest size your truck can handle and going for a sealed enclosure option should guarantee good sound quality.

Tips For Choosing A Truck Subwoofer

#1: Know your specs

It’s important to understand the specs to look for in order to judge the quality of your subwoofer, and whether it will work for your truck.

Power, sensitivity, frequency, impedance, and enclosure are a great place to start.

#2: Get an amplifier

Amplifiers power subwoofers, so you’re going to need a good one. Some subwoofers come with amplifiers built in, but most of the time you’ll need to make an additional purchase.

Just remember to match the RMS ratings to make sure they’re compatible!

#3: Maintenance is key!

A good subwoofer can be a big investment, so you’ll want to make sure you’re getting the most bang for your buck.

The only way to do this is to prioritize maintenance!


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Monisha Pillai

Lover of traveling, shopping, and all things nature. When I’m not writing about the latest outdoor gear, you can find me lying out on the beach, trying new foods, or planning my next trip to Asia.

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