Enclave Audio Blog – 11.9.20 (11.8.20)
The great thing about a home theater is the experience of surround sound that places you in the movie, especially when there is action.
However, what makes surround sound complete is the presence of a subwoofer. When you see the designations: 2.1, 5.1, 7.1, etc… the .1 refers to the subwoofer channel and that one subwoofer is to be or is being used.
Source: 5.1 vs 5.2 – What Does It Mean for Your Home Theater Setup?