Thread: exhaust
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Old 08-20-2014   #60
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,686
Default Re: exhaust

Quote:
Originally Posted by Schrade View Post
Thanks; will give it a listen shortly here...

Does it change INSIDE, and outside sound? Or just outside? Can you get a sound meter on it?

I don't have one; I'm using a camcorder recording, played on a media player with an EQ. Problem with that is, is that the lower band on the EQ is still above the level of the drone - I'm guessing drone (interior resonance) is below 20 hertz, which is normal lower end of human hearing. Normal audiometer won't even do this...
It changes both. Not sure what muffs mike100 is using, but the DynoMax are straight thru. Flows 2000SCFM. If there is any resonance it is in the 1200rpm range. Anything above that not an issue. That video was shot w a iPhone.
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