What is a good sensitivity/rating for speakers?

Related questions

1. What is the best Hz for speakers?
2. What does mid do on an equalizer?
3. Why do my speakers pop at high volume?
4. What frequency should I set my subwoofer to?
5. Why do my speakers sound distorted?
6. How does Hz affect sound quality?
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8. Is higher Hz better sound?
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Tags

1. #microphone
2. #means
3. #placed
4. #consider
5. #input
6. #volume
7. #measured
8. #rating
9. #typically
10. #given
11. #achieving
12. #sensitivity
13. #produce
14. #sound
15. #power
16. #meter
17. #speaker
18. #standard