vented tube design for small driver

jarrettl · 27th February 2006, 10:01 PM

I've just purchased an 8" dayton dvc and 100w plate amp to put in a .5 cu.ft. box i already have. It would be a front-firing ported enclusure. However, I've been reading about uses of sonotube and was wondering if I could use a segment of sonotube to (seriously) extend my box volume, say, like this.
Would this cause any weird problems? I have modeled it in WinIsd and graphs look good. I would be downfiring instead of front firing. Is a 5.2% sag acceptable? Am I just some math and a couple feet from a TL? Would an 8" driver be acceptable for a small TL using 8" diameter sonotube. Some advice would be helpful as I am very new to this. Powered Sonotube TL?

simon5 · 27th February 2006, 10:54 PM

Usually 5% sag is the limit, so I guess it would be ok...

A TL with a 8" driver? Many people do that.

tade · 27th February 2006, 10:57 PM

can you use a dc current to prevent cone sag?

simon5 · 27th February 2006, 11:15 PM

Not recommended AFAIK.

27th February 2006, 10:01 PM	#1
jarrettl diyAudio Member Join Date: Feb 2006 Location: Portland, Or	vented tube design for small driver I've just purchased an 8" dayton dvc and 100w plate amp to put in a .5 cu.ft. box i already have. It would be a front-firing ported enclusure. However, I've been reading about uses of sonotube and was wondering if I could use a segment of sonotube to (seriously) extend my box volume, say, like this. Would this cause any weird problems? I have modeled it in WinIsd and graphs look good. I would be downfiring instead of front firing. Is a 5.2% sag acceptable? Am I just some math and a couple feet from a TL? Would an 8" driver be acceptable for a small TL using 8" diameter sonotube. Some advice would be helpful as I am very new to this. Powered Sonotube TL?

27th February 2006, 10:54 PM	#2
simon5 diyAudio Member Join Date: Nov 2004 Location: Québec, Québec	Usually 5% sag is the limit, so I guess it would be ok... A TL with a 8" driver? Many people do that. __________________ DIYaudio for President !

27th February 2006, 11:15 PM	#4
simon5 diyAudio Member Join Date: Nov 2004 Location: Québec, Québec	Not recommended AFAIK. __________________ DIYaudio for President !

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27th February 2006, 10:57 PM	#3
tade diyAudio Member Join Date: Feb 2005 Location: Ralieigh nc	can you use a dc current to prevent cone sag?

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