- #1
tfowler306
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we measure amplifier output in watts, and speakers in db spl which is logrimithic to the power applied, so if I have a 4 ohm speaker that will create 91 db of spl when 2.83v is applied how much work is done?
Watts = V^2/R = W=2.83^2/4 = W=8/4 so W= 2 this is the power applied to the speaker if I want to know the force applied to the speaker cone (f=ma) the moving mass with air load for the speaker is 142.7grams, how do I find the acceleration of the speaker cone? If the speaker is producing a steady frequency let's say 40Hz it would have no acceleration it would be a constant velocity. I am stumped on where to go for this one...
Watts = V^2/R = W=2.83^2/4 = W=8/4 so W= 2 this is the power applied to the speaker if I want to know the force applied to the speaker cone (f=ma) the moving mass with air load for the speaker is 142.7grams, how do I find the acceleration of the speaker cone? If the speaker is producing a steady frequency let's say 40Hz it would have no acceleration it would be a constant velocity. I am stumped on where to go for this one...