Is that “C” the weighting? “A” weighting is industry standard if that’s what that is.
Probably not much different and both are loud.
some studying i did manage..
The most common weighting that is used in noise measurement is A-Weighting. Like the human ear, this effectively cuts off the lower and higher frequencies that the average person cannot hear.
Although the A-Weighted response is used for most applications, C-Weighting is also available on many sound level meters. C Weighting is usually used for Peak measurements and also in some entertainment noise measurement, where the transmission of bass noise can be a problem.
since i was putting the pedal close to the metal.. i opted for c weighted...
still learning..