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While these numbers seem to be pretty complex, it simply is giving room to define “height” speakers in a home theater surround sound system. The third number of a speaker system configuration indicates the number of “height” or “upward-firing” speakers.Īs if two numbers weren’t enough, you may come across numbers like 7.1.2 or 9.1.2 in your home theater product search. While most surround sound systems work great with only one subwoofer, some people prefer the sound of two for their unique room and needs. It is most common to see a 1, which means there is one subwoofer in the setup, but you may come across a 2 every now and then. The second number of a speaker system configuration indicates the number of subwoofers in the surround sound setup. When it comes to the main speakers, we are referring to the front left, front right, center, and various surround speakers. The first number of a speaker system configuration defines the number of main speakers in the setup. What Do The Numbers in Speaker Channels Mean? The First Number (ex: The “5” in 5.1) To quickly jump to whatever sound setup you’re looking for, click one of the links below. Let’s dive into the details of the different speaker systems and what their channel structure looks like. The second number defines the number of subwoofers, and the third number defines the number of “height” speakers. What do the different speaker channels mean? When it comes to surround sound channels, the first number defines the number of main speakers. As you see them over and over again, you may begin to wonder what they are.

When you’re setting up a surround sound system, you’re going to run across numbers like 2.1, 5.1, 7.1, 7.1.2, 9.1, and beyond.