|Nov18-08, 03:49 AM||#1|
1. The problem statement, all variables and given/known data
You are trying to decide between two new stereo amplifiers. One is rated at 130 W per channel and the other is rated at 200 W per channel.
In terms of dB, how much louder will the more powerful amplifier be when both are producing sound at their maximum levels?
2. Relevant equations
dB = 10 log (I/Io)
3. The attempt at a solution
I was not sure If i can use the 130 W and 200 W as intensities....
|Nov18-08, 04:00 AM||#2|
Power is proportional to the intensity so yes.
|Nov18-08, 08:10 AM||#3|
so the solution is :
dB = 10 log (130/200) ???
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