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Old 02-06-09, 10:11 AM   #10
Mr Speirs
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Join Date: Jul 2008
Location: Northampton
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Default Re: how loud is 105db?

Yup every 3db is a doubling of volume but only electronically measured with no weighting.

For a percieved doubling in volume a 6-10db increase would be required. This is because the human ear automatically attenuates low frequencies. So V-Twin are generally much quieter to the ear than a screaming IL4.

Ever noticed how you hear a V-Twin rev and you smile where as an IL4 you wince???
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