Mufflers

Circlotron · 18th December 2003, 11:33 AM

Automotive mufflers aren't speakers of course, but they are acoustically tuned "boxes" nonetheless, so may be of some interest to diy speaker persons. Get a load of this one! I think it's from some small 2-stroke scooter, those kind of engines being notably noisy and therefore needing greater muffling because of the rapid opening of the exhaust port producing more of a "crack" sound rather than the more gradual initial exhaust flow of a 4-stroke.

Imagine if your next speaker box was this complex!

sreten · 18th December 2003, 11:42 AM

A major design feature is acoustic resonators which hugely
improve the 2 stroke intake and scavenging action giving
a large increase of power in the "powerband".

Only after this is its other function, to "muffle".

sreten.

Nappylady · 18th December 2003, 05:16 PM

Circlotron, can I borrow your brain for a few days? I really need some inspiration, and you seem to be a fountain of new ideas...

Dave Jones · 18th December 2003, 09:26 PM

I describe my transmission line speakers as "like glasspacks and duals." :-)

18th December 2003, 11:33 AM	#1
Circlotron diyAudio Member Join Date: Jun 2002 Location: Melbourne, Australia	Mufflers Automotive mufflers aren't speakers of course, but they are acoustically tuned "boxes" nonetheless, so may be of some interest to diy speaker persons. Get a load of this one! I think it's from some small 2-stroke scooter, those kind of engines being notably noisy and therefore needing greater muffling because of the rapid opening of the exhaust port producing more of a "crack" sound rather than the more gradual initial exhaust flow of a 4-stroke. Imagine if your next speaker box was this complex! __________________ Best-ever T/S parameter spreadsheet. http://www.diyaudio.com/forums/multi...tml#post353269

18th December 2003, 09:26 PM	#4
Dave Jones diyAudio Member Join Date: Jul 2003 Location: Silicon Valley	I describe my transmission line speakers as "like glasspacks and duals." :-) __________________ Davy Jones

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

18th December 2003, 11:42 AM	#2
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	A major design feature is acoustic resonators which hugely improve the 2 stroke intake and scavenging action giving a large increase of power in the "powerband". Only after this is its other function, to "muffle". sreten.

18th December 2003, 05:16 PM	#3
Nappylady diyAudio Member Join Date: Feb 2003 Location: Salt Lake City	Circlotron, can I borrow your brain for a few days? I really need some inspiration, and you seem to be a fountain of new ideas...

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)