5 Best 15-Inch Car Subwoofers of 2021

Jerry Wilson
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A good subwoofer is essential in your car if you love bass, especially if you are an audiophile.

Choosing the best 15-inch car subwoofer for your car can be a daunting and time-consuming task that requires entire books to cover. However, there are some basic parameters you should consider to reduce the work you’ll need to do to choose the right sub.

There are plenty of factors we cover in our buying guide and buyer’s guide for 15-inch car subwoofers, such as wattage, magnets, RMS, and frequency, but try not to get bogged down in the numbers.

The best advice you can get is to go to a car audio shop and listen to different car subwoofers, then choose the one that has the type of bass you enjoy.

NameCategoryProduct
Skar Audio EVL-15 D4 15" 2500 Watt Max Power Dual 4 Ohm Car SubwooferBest OverallSkar Audio EVL-15 D4 15" 2500 Watt Max Power Dual 4 Ohm Car Subwoofer
Rockford Fosgate P3D4-15 Punch P3 DVC 4 Ohm 15-Inch 600 Watts RMS 1200 Watts Peak SubwooferBudget PickRockford Fosgate P3D4-15 Punch P3 DVC 4 Ohm 15-Inch 600 Watts RMS 1200 Watts Peak Subwoofer

1. Skar Audio EVL-15 D4 15" 2500 Watt Max Power Dual 4 Ohm Car Subwoofer

Our rating: 9 / 10

Skar Audio EVL-15 D4 15" 2500 Watt Max Power Dual 4 Ohm Car Subwoofer

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Pros:

  • Easy to install
  • Compact and lightweight
  • Great looking finish
  • Great sound quality

Cons:

  • Low power handling
  • Low spl rating

For a 15-inch car subwoofer, the Skar Audio EVL-15 D4 1200W max dual 4 Ohm gives us a lot of room to play with. It can play with 1200 watts and it hits and plays it loud at 113 dB.

Unlike many subwoofers of its size, the Skar Audio EVL-15 D4 1200W max dual 4 Ohm is not that difficult to install. You can do it by yourself using basic tools and knowledge of mounting a car subwoofer.

Features:

  • Low power handling
  • Low spl rating

2. Rockford Fosgate P3D4-15 Punch P3 DVC 4 Ohm 15-Inch 600 Watts RMS 1200 Watts Peak Subwoofer

Our rating: 8 / 10

Rockford Fosgate P3D4-15 Punch P3 DVC 4 Ohm 15-Inch 600 Watts RMS 1200 Watts Peak Subwoofer

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Pros:

  • Rubber protectors for the terminals
  • Very high quality materials used
  • 3-year warranty

Rockford Fosgate has long been a dominant leader in the car audio world, and this well-made subwoofer is a great example as to why. With the P3D4-15, you’re getting a durable 15-inch subwoofer with a powerful motor and rubber feet to keep it steady during bass-heavy songs.

The 4-inch voice coil allows for enhanced heat management and energy transfer. The cast alloy frame and spider venting allow for superior heat dissipation and motor force.

This subwoofer has high maximum power and low minimum impedance, making it a versatile choice. The dual 4-ohm voice coils mean you can wire these subs in parallel or series. The P3D4-15’s RMS is 600 watts at 4 ohms, and its peak power is 1200 watts.

3. Kicker S15L7 4-ohm 15" Car Audio Subwoofer

Our rating: 7 / 10

Kicker S15L7 4-ohm 15" Car Audio Subwoofer

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Pros:

  • Magnetic shielding eliminates distortion
  • Polypropylene cone
  • Fiberglass reinforced Conex spider
  • Rubber surround
  • 4-ohm

Cons:

  • A bit heavy for most aftermarket car subwoofers
  • Not magnetically shielded

The Kicker S15L7 is an excellent choice for car audio enthusiasts who want top notch performance in a standard 15-inch size subwoofer.

4. Planet Audio AC15D Car Subwoofer

Our rating: 6 / 10

Planet Audio AC15D Car Subwoofer

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Pros:

  • Easy to install
  • Covers all ranges
  • Good choice for a car audio system
  • Very powerful

Cons:

  • Isn’t the best for extra bass lovers.
  • Has limited access ports at the back
  • Doesn’t come with cables

(PWCAC15D)

A subwoofer can improve your car audio experience by giving it a deeper and more accurate sounding bass, especially if you have a lot of car space available.

A subwoofer is actually not the same as a woofer. The bass comes from a woofer, but if you want it to sound really rich and richer, you need to add a subwoofer, which will bring out the bass volume.

5. Hifonics BRZ15D4 Brutus Dual Subwoofer

Our rating: 6 / 10

Hifonics BRZ15D4 Brutus Dual Subwoofer

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Pros:

  • Size
  • Great price

Cons:

  • Instability
  • Poor control knob

The Hifonics BRZ15D4 is one of the best budget-friendly subs of the year. This rugged 15-inch sub is made from a reinforced mica matrix cone and backplate. It's manufacturing is close to flawless.

On paper, this subwoofer promises great power output. It can go very loud and produce decent bass, but its overall performance lacks a little bit compared with more expensive alternatives. The bass output can sometimes sound distorted at higher volumes due to excessive clipping. As a result, it cannot be used for serious purposes. However, for the price, it's a great budget subwoofer to have as a secondary source during parties or listen to music.

Frequently Asked Questions (FAQ)

What 15 inch subwoofer is the best?

That one is entirely up to you and your specific needs. Each one we reviewed above has their own strengths and weaknesses. The type of enclosure you have, as well as the type of vehicle you drive, will also impact your choice. In our opinion, Polk Audio DB1225 and Phoenix Gold RSD-10S2 are the best 15-inch car subwoofers available right now.

If you consider yourself an audiophile or will always have your subwoofer located in a home theater, Klipsch R-15M is the clear winner. It has the best overall sound quality as well as the most powerful output.

The next best option is the Image Dynamics IDMAX 12", which is the absolute best value for a 15-inch subwoofer right now… if you can find one.

What is the hardest hitting 15 inch subwoofer?

No matter what your needs are, you should be able to find a solid performing car subwoofer on this list. Many of these run circles around traditional aftermarket subwoofers. They stand up to the most rigorous bass tests with flying colors. If you are looking for the most powerful 15-inch car subwoofer, you can start by looking at the Sundown Audio SA-15 or the Rockford Fosgate Prime. You won’t find a louder bass subwoofer on the market at this time. Each of these will redefine the way you listen to your music. With or without additional amplifier upgrades, you won’t be able to stop listening to these subwoofers once you add them to your car. Remember that cutting out your stock subwoofer and replacing it will be a difficult task. You will need to find room for the new subwoofer and wire the new system into your car.

What is the best size subwoofer for a car?

Many subwoofers will come is multiple sizes. This is a good thing if you already know what size you need and want to stick with it. However, if you intend to upgrade your system later or upgrade your amplifier, having multiple sizes will come in handy so that you can upgrade your subwoofer when you're ready.

You'll also want to keep in mind that the size of subwoofer isn't absolutely essential. In most cases, more power will result in more bass yielding better sound quality.

Do 15 inch subwoofers Sound good?

Vehicles come with separate subwoofers to enhance the bass sound of your music system. In general, subwoofer sizes have an effect on how good the sound may be. A subwoofer of 15 inches may sound up to par, but an 18-incher is always better. A good subwoofer must have deep bass sounds that are different from other models.

The question on which best subwoofer to buy has an answer: The bigger and better, the better the sound it will produce. The answer may be very simple, but that does not mean that subwoofer sound quality depends solely on the size of the subwoofer. It also depends on the way it was was engineered. A 15-incher can have a bass response that beats a bigger subwoofer.

Conclusion

If you are on a budget and don’t want to spend a great deal on a good car subwoofer, consider this value-for-money product from Boss Audio. Coming in a compact, versatile package and featuring robust construction and dynamics, this is an excellent performer for anyone looking for versatile, crisp base. This is our budget pick, and for the price, we believe it offers a great value.

Our Recommendation

NameCategoryProduct
Skar Audio EVL-15 D4 15" 2500 Watt Max Power Dual 4 Ohm Car SubwooferBest OverallSkar Audio EVL-15 D4 15" 2500 Watt Max Power Dual 4 Ohm Car Subwoofer
Rockford Fosgate P3D4-15 Punch P3 DVC 4 Ohm 15-Inch 600 Watts RMS 1200 Watts Peak SubwooferBudget PickRockford Fosgate P3D4-15 Punch P3 DVC 4 Ohm 15-Inch 600 Watts RMS 1200 Watts Peak Subwoofer