Quote:
Originally Posted by RI Swamp Yankee
What kind of DB meter? Is that a meter referance to 20 micropascals often referred to as "absolute" sound level? What is the weighting (designed frequency response) of the meter? Remember, 95 decibels is not a measure of loudness, unless we assume something, it is a ratio.
IMHO, badly written and dumb!
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Para IIA above stated ...
II-a. No person shall operate in this state any motorcycle which produces a sound level in excess of [106] 95 decibels on the A scale, when measured in accordance with the provisions of the Society of Automotive Engineers Recommended Practice ANSI/SAE J-1287 annual report on “Measurement of Exhaust Sound Levels of Stationary Motorcycles".
So, like the boat SPL RSA, it's dB-A and thus 0 dB = 20 micropascals. Still requiring a "functional" tach and outlawing aftermarket exhaust is dumb. Who cares so long as the sound level is met ? I wonder if these wonderkids will do the same thing for loud cars ? So sorry Walker etal, only factory exhaust allowed in NH !
I believe other states require MC muffler manufacturers to certify their product(s) meet certain SPLs. Why can't NH do the same ?