LoudBurp Posted January 7, 2009 Report Share Posted January 7, 2009 I was wondering if any body knew how to figure out the port frequncy vs. port length, in other words how to tune a box without punching in what you want your box to be tuned at into a computer and it telling you how to build the box. You see, I am kind of new at this and I don't have enough to to out and buy termpack right now and I think it would benefit me to know this. I can build a pretty mean box now but I want to take the guess work out of it. So, if anybody has anywords of advice it would be greatly appreciated. Thanks! Quote Best of Luck and Cheers! There is a point of diminishing returns on the amount of equipment installed, kinda like throwing money out a window. Link to comment Share on other sites More sharing options...
killer_spirll Posted January 7, 2009 Report Share Posted January 7, 2009 u can use re enclosure calculator this is what i used and u type in what size of box u want and it tells u and the info hertz cubic foot cubic inches Quote Link to comment Share on other sites More sharing options...
E a r t h Posted January 18, 2009 Report Share Posted January 18, 2009 He wants to do it long hand using math, not using an online box calculator Quote Link to comment Share on other sites More sharing options...
philip Posted January 18, 2009 Report Share Posted January 18, 2009 here you go. http://mobile.jlaudio.com/support_pages.php?page_id=165 Quote Link to comment Share on other sites More sharing options...
Derrick824 Posted January 18, 2009 Report Share Posted January 18, 2009 I use WinISD to calculate port length. It's a free download. http://www.linearteam.dk/default.aspx?pageid=winisd Quote Link to comment Share on other sites More sharing options...
Neo_frog Posted January 25, 2009 Report Share Posted January 25, 2009 He wants to do it long hand using math, not using an online box calculator That's the only way to do it. Quote Need an install? Hit me up.[email protected]Got car audio questions? Check here first!Everything you need to know. =]http://www.stevemeadedesigns.com/board/topic/83029-everything-you-need-to-know/ Link to comment Share on other sites More sharing options...
IAMBUMP Posted January 25, 2009 Report Share Posted January 25, 2009 Lv=Av*1.84*10^8/[Vb*1728(Fb/.159)]-.823sqrtAv Lv= length Vb= box volume Fb= frequency Av=port area what i have always used. Quote If you've been doing something for 20 years, does that mean what you do it right??? __________________________________ Want: 2x Phoenix Gold RSD65CS Comp Amp Undecided AA Havoc AQ 1200 knu wiring set scew lugs for all connections Alpine IDA-X303 2v preout --this goes under the seat. Have: Alpine tape deck w/ Benzi Box and 6 disc changer Check out my Toyota build Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.