Hi Don, they are, in HzOriginally Posted by bcdon
Guitar Low E string 82.4
Guitar A string 110.0
Guitar D string 146.8
Guitar G string 196.0
Guitar B string 246.9
Guitar E string 329.6
The 25% is the percentage increase in frequency from 82.4Hz (low E) to 110Hz (A)
(110-82.4)/110 x 100 = 25.1% Increase.
As you'll see if you want to get the calculator out again, not ALL the strings vibrate 25% faster than the one above it, I think I see some 25%'s and at least one 20%. I just used the E and A strings as examples of why we need different string gauges on a guitar.