Does Soundbar Size Matter? (Comparing With TV & Room Size)

Does Soundbar Size Matter?

Soundbars are equipped with speaker drivers that are very small and hidden within their bodies. That’s why knowing about their sizes is difficult. But they are very critical for the acoustics of the room. So, does soundbar size matter?

The size does matter to fill the room. As a general rule of thumb, the length of the soundbar (in inches) should be 18% of the room length and the left and right speaker drivers of the soundbar should not exceed more than 1 foot apart from the TV edges.

Keep reading as I will deep dive into this topic and will open it for you furthermore. I will throw the light on a few more related stuff to this topic.

How Do You Know What Size Soundbar To Get? (In-depth Analysis)

Room Size (inches)Soundbar Length (inches)
Very Small (120X144)26 inches (round figure)
Small (144X216)39 inches (round figure)
Medium (192X240)43 inches
Large (264X336)61 inches (round figure)
Values are researched and tested by me

I kept the length metrics and tested them out in my living room, where I have installed the TV and soundbar.

The length metrics really helped me fill the room. I brought two soundbars from my showroom for this test.

The 18% sweet spot really stands out.

Why am I forcing 18%?

Because the manufacturers increase the length of the soundbar. They usually then equipped them with bigger speaker driver areas.

They have bigger size drivers. The soundbar speaker drivers are not meant to be round as usual speakers, but they are oval. The oval shape of the drivers is aesthetically friendly. That’s why when increasing the area of these speaker drivers, the sound also improves.

That’s why you should compare the length of the soundbar to the length of the room.

When you are about to buy a new soundbar. You should first measure the length of the room and apply this 18% rule. The obtained value will be your desired soundbar length size.

Read my this review guide on the best soundbar under $300Opens in a new tab.. One soundbar in this list provides 5.1 channels with two physical speakers at the back.

Channel VS Room size: How Many Channels’ Soundbar Do You Need?

Room Size in InchesRequired Soundbar Channels
Very Small (120X144)3 channels
Small (144X216)3.1 channels
Medium (192X240)5.1 channels
Large (264X336)5.1.2 Or 5.2.4
The first number describes the speaker drivers in the soundbar, the numbers after the first point describe the subwoofer, and the numbers after the second point describe speaker drivers for Dolby Atmos.

Why do I recommend These Numbers For Every Room Size?

  1. Very Small Room: The soundbar with just left, right, and center channels will easily give you a nice experience of any kind of content.
  2. Small Room: The already 3 channels with one subwoofer will work for you
  3. Medium: Two physical speakers at your back along with 3 channels in the soundbar and a sub will satisfy your needs.
  4. Large Room: Here too you need two physical speakers at your back, but along with it, you need two to 4 speaker drivers in the soundbar for spatial sound and the 3 front channels with a sub. Few soundbars provide two channels at the far edges of it for spatial sound, along with the drivers at the top of it.

Read my this guide to know which soundbar do you need, cheap or expensive?Opens in a new tab. Don’t forget to read the poll data at the bottom.

Does the width of the soundbar matter?

The width does matter. Because the speaker drivers inside the soundbar need room to move back and forth, so they can produce good quality sound.

The deeper the width of the soundbar, the deeper the sound will be. Because the speaker drivers inside the soundbar need space to move in. That’s why the sound and bass will be deep and accurate. 

But the width should not exceed a lot more than what is needed. But don’t worry, the engineers in the soundbar companies are aware of it, and they will never cut or increase the width of the soundbar unless it is not a reputable company.

Reputable companies always keep these little things in check. Because these little things affect the sound more.

Read my this guide to know that do you need an eARC soundbarOpens in a new tab.? You will know more about soundbar technologies.


Do all soundbars fit all TVs?

Not all soundbars fit all the TVs because of the demand and supply. Many users are okay with just 3 channels in the soundbar, and others will demand Dolby Atmos from the brands. That’s why all the soundbars can’t fit all the TVs.

But many brands are working on infusing all of these drivers in a very small soundbar cabinet. Few have succeeded in doing so.

Does the soundbar need to be under the TV?

You can place the soundbar at the top or bottom of the TV, but the soundbar should be very close to the TV. Because every soundbar has a center channel built-in and the center channel speaker should be placed close to the TV and should be at the center for the optimal experience.

This was my opinion, read more about it from LifeWire BlogOpens in a new tab.

Should the soundbar be as wide as the TV?

If the length of the soundbar matches the edges of the TV, then it is a good thing. But if you can’t find a size that can match your TV from edge to edge. Then get a soundbar that its left and right speaker drivers are not apart more than 1 foot away from the TV edges.

Do you need a soundbar with a 4K TV?

You need a soundbar with any type of TV because nowadays, the TVs are so flat that brands can’t fit a good quality speaker in them.

That’s why you should also buy a soundbar for it to lift the game up.

Are bigger soundbars better?

A bigger size of soundbar has nothing to do with the quality of sound. The speaker drivers’ size, which is built into the soundbar matters. A bigger cabinet of soundbar can’t ensure good quality. You should always investigate the size of each speaker driver in it. Read the product manual carefully before buying a soundbar.

This was my opinion, know more about it from this buyer guide by DigitalTrends BlogOpens in a new tab.

Ayaan Khan

Hi, it's Ayaan khan a freelancer and a computer science degree holder from P.E.S. College. I write articles on The facts and research is provided by Daniel and the writing job is mine.

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