Subwoofer Size Chart

If you use your subwoofer with the wrong output size, it can make bad sounds and use too much power. Size says everything. So, in this article, we’ll look at the different sub sizes and how they should be used. This will help you match the size of the subwoofer to the size of the room.

Why this Size Chart

Subwoofers make those deep, thumping sounds that give your music a rich, bassy feel. But when it comes to choosing a subwoofer, the most common questions are

  • Does the size affect the frequency?
  • Does the size of the room matter when choosing a subwoofer?
  • How do I figure out what size is right for my room?
  • Can I put a subwoofer made for a room in my car?
  • What’s the difference between a small subwoofer and a big one?

If you’ve ever asked any of these questions (or are probably asking them right now), this size chart is for you.

Subwoofers are made to work with nearly every type of speaker. So, you can use them with any speaker, no matter how big or small it is. So, you can use them with a big speaker for a big event, a home theater system, or a portable car rear.

A size chart for car subwoofers

We know that most home theater speakers and concert speakers are a lot bigger than car speakers. This means that they might need a subwoofer that is smaller. Most subwoofers for cars come in four sizes: 8 inches, 10 inches, 12 inches, and 15 inches.

Before we talk about how these subwoofers are different, here’s a step you can take to figure out the size of yours.

Measure the subwoofer from one end to the other using a ruler or tape measure.

This is a quick and easy way to do it. Now, take a look at the most important parts of each size.

8-inches Subwoofer

Weight: The best thing about them is that they are light, which makes them the easiest to pick.

Space consideration: Because they are in the shape of a small cone, they don’t take up much room, which makes it easy to put them under the dashboard or the seat.

Watts: 300-1200w

Bass level and sound quality: Most of these small subwoofers have decent low-frequency bass and deliver good sound.

Best music type consideration: Jazz and classical music have been said to sound better on it.

Car suitability: Small cars work best with subwoofers that are also small. Even though it isn’t as small as a Ferrari, you get the idea.

10-inches Subwoofer

Weight: This is also one of the lightest things.

Space consideration: uses less room and is easy to use under or behind the seat.

Watts: 150-1200w

Bass level and sound quality: It has a clear, thick bass that is loud. The low-frequency bass response, on the other hand, is not good.

Best music type consideration: They are perfect for playing Country music, hard rock, and metal.

Car suitability: This type of subwoofer is good for small cars.

12-inches Subwoofer

Weight: Compared to the 8-inch subwoofer, this is a bit heavy.

Space consideration: Well, you won’t want to put this kind under your seat because it takes up a little bit more room.

Watts: 50-1300w

Bass: level and sound quality: plays almost all bass levels perfectly and has a good sound.

Best music type consideration: This works best for almost any kind of music, from slow modern music to fast hard rock.

Car suitability: suitable for medium car size.

15-inches Subwoofer

Weight: This car subwoofer is pretty much the heaviest one you can find.

Space consideration: It takes up a lot of space and is usually put in the trunk of a car.

Watts: 600-5000w

Bass level and sound quality: iIt has a deep bass that keeps your chair shaking. But most people who have tried it say the sound isn’t very good.

Best music type consideration: This type of speaker works best with music like hip-hop, techno, R&B, and other similar styles.

Car suitability: You should think about bigger cars to figure out where to put them.

FAQs About Subwoofers

Does the size affect the frequency?

Well, it might look like that because most subwoofers that are smaller are better at making bass at low frequencies. The much bigger subwoofers, on the other hand, have a larger cone area that is better for making higher notes.

But other things, especially their weight, affect the range of frequencies they make. For example, a subwoofer with light cones is better for mid-frequency range, while a subwoofer with heavy cones is better for low-frequency range.

How do I figure out what size subwoofer I need for my car?

It shouldn’t be too hard to do that. Okay, let me help you out by giving you some ideas. The first, and probably most important, thing you should think about when choosing a car is how much space it has.

So, if you have a small car like a Honda Civic, the best subwoofers to look at are those between 8 and 10 inches. This is because they are easy to fit into any space you have. Even so, this doesn’t give your car its full size power.

There are some other things you might want to think about as well.

  • What kind of music you enjoy
  • Available space in your trunk
  • How low you want the subwoofer to go.

What size subwoofer do I have?

It’s not hard to figure this out. Don’t forget that the size of your subwoofer is measured by its outside diameter.

So, just get a measuring tape and measure it across. It doesn’t matter if the subwoofer is round or square. Just measure from one end of one side to the other end.

What’s the best subwoofer for my room?

Well, this can be kind of hard. I know we’ve talked a lot about size when it comes to choosing a subwoofer, but there’s no one right way to do it. But here are some of the factors and criteria people have used:

  • How loud the room is
  • expected amount of power
  • Range of frequencies
  • Explosiveness
  • Music type
  • And a few other personal factors.

But one of the best things that has worked for most people is how visible the room is. This is because it helps make the sound louder and gives the desired reference point with less distortion.

But to give you a general idea and a point of reference, here are some ways to group rooms that can help you choose the best subwoofers.

Now, here’s the kind of subwoofer you’ll need to listen to music in your room well.

Extra Small room (under 1200 cubic feet)

Subwoofers size: 12-inches

Number of subwoofers: Just one is fine.

Wattage: 325watts

Frequency response: 20-270 frequency sound range

Maximum Acoustic Response (MAO): 116 decibels

Small room (1200-2000 cubic feet)

Subwoofers size: 10-inches

Number of subwoofers: For these subwoofers to work well, you will need two of them.

Wattage: 400watts (Don’t forget that this has to be the same on both subwoofers.)

Frequency response: 19-270 frequency sound range

Maximum Acoustic Response (MAO): 118 decibels (x2)

Medium room (2000-4000 cubic feet)

Subwoofers size: 12-inches

Number of subwoofers: About two subwoofers set up in the right way will work fine. I’m the guy

Wattage: 550watts (Both subwoofers must have the same number of watts)

Frequency response: 16-270 frequency sound range

Maximum Acoustic Response (MAO): 128 decibels (x2)

Large room (4000 – 6000 cubic feet)

Subwoofers size: 15-inches

Number of subwoofers: For a better bass effect in the room, you will need two subwoofers.

Wattage: 800 watts (The more powerful the subwoofer, the more watts it needs to run)

Frequency response: 18-270 frequency sound range

Maximum Acoustic Response (MAO): The right subwoofer will have 124 decibels.


Extra-large room (6000 cubic feet and above)

Subwoofers size: 12-13 inches

Number of subwoofers: To get the right bass effect, you will need about 4 subwoofers in the room.

Wattage: 800watts (All of them must also have the same number of watts)

Frequency response: 18-270 frequency sound range

Maximum Acoustic Response (MAO): Each of the subwoofers has enough sound response at 125 dB.

How Big of a Subwoofer Does a Room Need?

No, that’s not true! Everyone sometimes wants a deeper sound that keeps the ground moving. You don’t need a subwoofer that is very big. But if you want it, there’s nothing stopping you from getting it, not even the size of your room.

The only problem you might have is not having enough room. Yes, it can be hard to place bigger subwoofers in a small room. But if you can fix that big boy in any way, go for it!


Now you can be sure that you’re getting the right size subwoofer for your car or room. You can enjoy your music with more bass wherever you are.


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