Different audio products have different numbers of channels. There are 2.1 channels, 5.1 channels and 7.1 channels in common. 2, 5 and 7 are the number of speakers, and 1 behind the decimal point represents a subwoofer. When choose and buy, you can consult the size of the room to match the most appropriate sound channel quantity.
Rooms of 9 ~ 10 square meters: 2.1 sound channels
Rooms of 12 ~ 18 square meters: 5.1 channels
Rooms over 18 square meters: 7.1 sound channels
Rooms of 9 ~ 10 square meters: 2.1 sound channels
Rooms of 12 ~ 18 square meters: 5.1 channels
Rooms over 18 square meters: 7.1 sound channels
