2.0, 2.1, 5.1, 7.1 are speaker configurations. The first number is the number of full range speakers in the set and the second number is a subwoofer:
- 2.0
- 2.1
- Front Left & Right
- Subwoofer
- 4.1
- Front Left & Right
- Rear Left & Right
- Subwoofer
- 5.1
- Front Left & Right
- Centre
- Rear Left & Right
- Subwoofer
- 6.1
- Front Left & Right
- Middle Left & Right
- Rear Left & Right
- Subwoofer
- 7.1
- Front Left & Right
- Centre
- Middle Left & Right
- Rear Left & Right
- Subwoofer
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