jessdabest77 Posted March 9, 2012 Report Share Posted March 9, 2012 I have an older BTL 18 and want to build a box using two 6" flared port's.It's gonna run 2200 watt's to it.in a hatchback,with sub up,port's facing rear.How long should my port's be and where should I place them,like one in each corner,both in the middle,any suggestion's? Quote Link to comment Share on other sites More sharing options...
sayhuh? Posted March 13, 2012 Report Share Posted March 13, 2012 This depends on the size of your box. In Subwoofer help section, there is a box calculator called Torres. Download it, enter your box specs, your port info and it will tell you how long your ports need to be, depending on what frequency you want to tune to. Quote Blown Link to comment Share on other sites More sharing options...
sayhuh? Posted March 13, 2012 Report Share Posted March 13, 2012 Oh yea and that. Mine's sub up, port up and does ok. lol I dont have the option for many other ways, so not sure of any other way. Quote Blown Link to comment Share on other sites More sharing options...
jarredondo1999 Posted April 13, 2012 Report Share Posted April 13, 2012 This site could also help you out http://www.psp-inc.com/tools.html. Quote Link to comment Share on other sites More sharing options...
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