Top 5 Best 8 Inch Subwoofer Car Audio: Our Top Pick 2021

8-inch subwoofer kits are the greatest option for drivers who have limited interior room and want to install their subwoofers quickly. 

Although they aren’t as huge or powerful as bigger 15- to 18-inch subwoofers, they are ideal for smaller vehicles like hatchbacks. 

And, these subwoofers are not only easy to power using mini amps, but they can also be put in confined areas such as below the seat, right in the center console, or in the spare tire storage compartment.

Furthermore, because of their compact size and relatively light profile, 8-inch subwoofers can create realistic bass.

To help you find the perfect 8-inch subwoofers kit, we made a list of the top 5 best 8 Inch Subwoofer Car Audio. Plus, as you can choose a subwoofer on your own, we’ve a buying guideline after the review. 

Let’s just dive into the article. 

However, if you don’t have enough time to read the full article, then know what’s our best pick. 

Our Top pick: 

#1. Rockford Fosgate P3SD2-8 (Best for Tight Spaces)

1st Runners-up: 

Alpine Electronics PWE-S8 Subwoofer (Best for compact enclosures)

2nd Runners-up: 

Kicker Solo-Baric L7 Subwoofer

Top 5 Best 8 Inch Subwoofer Car Audio Review

1. Rockford Fosgate P3SD2-8 (Best for Tight Spaces)Best 8 Inch Subwoofer Car Audio

If you’re with a tight budget or with limited room in their vehicle to put a larger subwoofer, the Rockford Fosgate P3SD2-8 is the perfect choice for you. 

The P3SD2-8 is an 8-inch subwoofer with a peak output of 300 watts and an RMS of 150 watts by Rockford Fosgate. The high-quality speaker looks nice and is an excellent subwoofer replacement. When compared to a factory sub, this variant has anodized metal cones that deliver powerful bass.

Besides, the subwoofer is capable of handling continuous power needs. The voice coils dissipate a lot of heat, and the stitched tinsel lead voice coils can endure strong cone movements, so you get ongoing, distortion-free bass tones. 

What’s more, this sub comes with a Shallow-mount structure, which is easy to install and works in depth-limited spaces. It also requires no assembly. These features actually made the Rockford subwoofer one of the best 8 inch subwoofer car audio.  

However, this speaker is not as loud as the other subwoofers listed. So, you may look for other subwoofers if loudness is a big deal for you. 

Product Specifications and Key Features: 

  • Batteries: A 12V Battery
  • Max Power Output: 300W
  • RMS Power: 150W
  • Frequency Response: 38 – 250 Hz
  • Sensitivity: 82 dB

  • Dual 2-ohm voice coils provide wiring flexibility
  • Integrated spider venting reduces the risk of overheating
  • Space Saving
  • Stylish appearance

  • Not as loud as the other subwoofers listed.
  • Requires an enclosure to offer the finest sound quality 

2. Alpine Electronics PWE-S8 Subwoofer (Best for compact enclosures)Alpine Electronics PWE-S8 Subwoofer

Alpine Electronics PWE-S8 subwoofer – a compact yet powerful sub that brings the excitement of sub-bass into your automobile without taking up much room. It’s wireless and comes in a cast-aluminum enclosure.

The continuous power of 150 watts combined with the peak power of 300 watts works flawlessly. The frequency response range of this subwoofer is 25 to 250 Hz.

A polypropylene cone and butyl rubber rim are included with the sub to ensure continuous, authentic sound generation. 

We found that a verified user reviewed This is the perfect subwoofer solution for Jeep TJ-Fits under the rear seat.”

The Automatic disconnection protects your sub from overheating or a short due to an electronic failure. The subsonic filter also limits bass notes below a certain threshold, ensuring that the sub is protected and performing at its best. 

Product Specifications and Key Features: 

  • Power Rating: 120-watts RMS/ 240-watts Peak Power
  • Frequency Response: 25Hz – 152Hz
  • Weight: 10 pounds
  • Connection: Wireless 
  • Enclosure: Cast-aluminum enclosure.

  • Nice sound adjustments
  • Small size fits in limited space
  • Reasonable price for a powerful sub
  • An inline fuse to guard the inbuilt amp
  • Sturdy, long-lasting aluminum construction
  • Less deep bass than other subwoofers with lower frequency limits
  • Troublesome Installation 
  • The wiring harness is comparatively short 

3. Kicker Solo-Baric L7 Subwoofer (Best Value)Kicker Solo-Baric L7 Subwoofer

If you’re looking for an advanced bass output, Solo-Baric L7 component subwoofer is built for you.   

First of all, it comes with an ultra-rigid cast aluminum basket that carries the single-piece square cone to build a speaker that transfers more air than a likewise sized round sub. 

Besides, this sub sets dual high-temperature 2-ohm voice coils and works smoothly in the continuous power of 450 watts combined with the peak power of 900 watts.

The precision-built motor structure won’t give in to stress, giving you a heart-pounding low end that won’t quit even when your system is pushed to its limits.

Moreover, this product highlights an injection-molded polypropylene cone that works with a tight rubber surround to serve massive bass in either sealed or ported enclosure.

What’s more, its unique design and black finish create a bold aesthetic statement, and an optional grille may be added to improve its appearance.

Product Specifications and Key Features: 

  • Power range: 50-450 watts RMS (225 watts per voice coil)
  • Peak power: 900 watts
  • Frequency response: 28-100 Hz
  • Sensitivity: 83.6 dB
  • Mounting depth: 4-3/4″

  • Great dB output.
  • Dual Voice Coils
  • The most outstanding quality of making and materials
  • Better sound quality than most 8 inch subs.
  • Terminals aren’t on the same side of the subwoofer.

4. Skar Audio SDR-8 D4 Car Subwoofer (More Accurate Bass)Skar Audio SDR-8 D4 Car Subwoofer

If you want bass and a high-end sub on a limited budget and space in your trunk, Skar Audio’s SDR-8 D4 Car is the perfect option for you. 

This is a dual 4-ohm Car subwoofer with a maximum power of 700 watts and RMS power of 350 watts. It has a high roll foam surround and is built of competition-grade pressed paper cones. You can also find a 2″ 4-Layer High-Temperature Copper Voice Coil inside it.  

This sub delivers hard-hitting, low-spectrum sound. It provides clean power and has the same quality as most 10-inch and even some 12-inch subwoofers.

A verified user-reviewed that, “Skar is the brand he wants. This 8-inch sub hits harder than a 12-inch sub. And it is well worth the money.” 

Product Specifications and Key Features: 

  • RMS power: 350 watts 
  • Peak power: 700 watts
  • Frequency response: 30 Hz – 350 Hz
  • Sensitivity: 83.7 dB
  • Mounting depth: 4.56″

  • Delivers powerful, crystal clear bass
  • Low price
  • Great Appearance
  • High Flux Ferrite Motor
  • Advanced Air Flow Cooling Design
  • Less RMS and peak power than other subs
  • The surround may split or crack


5. Massive Audio HippoXL84R – SPL (Most Powerful)















Massive Audio HippoXL84R – SPL

Do you want to replace your factory subwoofer with a better one?  Then Massive Audio HippoXL84R is the perfect solution for you.

HippoXL84R is a high-performance car audio subwoofer brought to you by Massive Audio. If you need a massive performance, let me introduce the great features of this subwoofer. 

Despite the widespread belief that bigger subs generate better sound, this item enables higher performance with a little woofer.

To produce high power applications,this sub comes with reinforced fiberglass woven dust caps. Besides, there is  black anodized one piece pole-plate for better motor force.  Moreover, to make the product more durable, it is built with a cast aluminum basket. Again, the subwoofer offers a double stack high-energy strontium magnet structure. 

All these features make this subwoofer unique. We can guarantee that it will impress you. 

One can enjoy using it in his car as it takes up more limited space. Additionally, it is easy to install in a small enclosure due to its smaller size. 

Product Specifications and Key Features: 

  • RMS power: 300 watts 
  • Peak power: 600 watts
  • Magnet: 90oz Strontium
  • Basket: Cast Aluminum
  • SPL: 82.9dB

  • Comparatively lower price 
  • Very clear and deep bass
  • Double stack high-energy strontium magnet structure 
  • More durable subwoofer 
  • Easy to install in a small enclosure
  • Not made for all vehicles

How to choose the perfect 8-inch subwoofer: Buying Guideline How to choose the perfect 8-inch subwoofer Buying Guideline 

Now you know about the top 5 best 8-inch subwoofers. But before rushing to buy one, you’ve to know how to choose the perfect one according to your vehicle. 

You can find plenty of high-quality subwoofers in the market as many renowned manufacturers are producing them. Your final subwoofer choice will be determined by your preferences as well as the specific needs of your vehicle. 

So here we’ve noted down the most significant factors to consider while looking for the best 8” sub: 

  • Component or Non-component: A component subwoofer is made up of several pieces. On the other hand, Non-component subs include everything you need in one package. Buying a component one, you can independently include/exclude any parts. A non-component doesn’t give this freedom. Component subs are the preferable alternative if you want to personalize your car’s audio system. Non-component subs are a good option if you don’t want to deal with the installation. 
  • Enclosure: The type of enclosure used has a major influence on the type of bass produced by the sub. When seeking higher volume, ported and bandpass enclosures are better, whereas sealed boxes deliver the deepest bass frequencies. 
  • Power or amp: Powered subwoofers generally come with a speaker and an amplifier placed in one small enclosure. They are most suited for customers who need to improve their systems with a sub cum amplifier upgrade, as well as for smaller vehicles that may not have enough space for separate speaker and amplifier installation.
  • Single Or Dual Voice Coils: single and dual voice coils are the two major types of voice coils you can find in subwoofers. Individuals who desire a fast and simple audio upgrade for their systems typically go for single coils. Conversely, Dual voice coils make the subwoofer more adaptable, allowing you to add additional sound output drivers later on. They are ideal for consumers that enjoy modifying their stereo to get the greatest sound quality possible. 
  • Frequency Range: A subwoofer’s frequency range reveals the frequency limits that the speaker can accomplish. The lower the limit, the deeper the subwoofer’s low frequencies. If you want the deepest bass hit, go with the sub with the lowest frequency limit. 

Let’s Wrap Up!

In this article, we have discussed all the pros, cons, and specifications of the best 8 inch subwoofer car audio available in the market.

Most of the 8-inch subwoofers mentioned above are small and fit in limited spaces like below the seat and small trunk compartment.

Go through the above-mentioned products, choose the perfect sub as per your requirement and install it on your own. A well-designed speaker that generates clear, accurate, and booming bass that will cause your windows to tremble. 

Hope you will no longer be worried about the best 8-inch subwoofer car audio upgrades.

If you have any queries please write them down in the comment box below! 



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