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      03-11-2012, 04:16 PM   #27
tibra1
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Drives: 2011 ZCP M3 - 2007 335i crashd
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Quote:
Originally Posted by dagolfpro View Post
I think each individual's own definition of "drones" is different. I did the ACM method and have had various friends in my car and everyone one of them says it's much louder and can hear the exhaust but none have said it "drones".

I was told and from what I've read online, that "drone" means vibrations. Can anyone elaborate on this?
Drone is charcterized by a low frequency "hum" in a certain RPM range since its low frequency it does often feel like vibration.. as a result of resonance..its the kind of sound that causes pain in the ears after prolonged exposure

Last edited by tibra1; 03-11-2012 at 07:27 PM..
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