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Maximum Theoretical Speaker Efficiency

This is a question for the tech-types.

What would be the theoretical maximum Sound Pressure Level that a speaker could produce from 1 watt of input power, assuming all of the power went into sound? In other words, at 100% conversion of electrical power to sound power. I just want to know how efficient typical speakers are.
mjhaudio

Showing 1 response by cdc

cdc
1,868 posts
 
Going with Gs5556 theory of 10% efficient and say, 93 dB. Each doubling of power equals 3dB increase in efficiency. so that would be:
20% 96
30% 99
40% 102
50% 105
60% 108
70% 111
80% 114
90% 117
100% 120dB

My logic is probably pretty messed up BTW.
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