had001 Posted April 11, 2007 Report Share Posted April 11, 2007 Need serious help with my ports. The box im going to make has a Net size of 16.5"x40"x16, it comes to 6.11cuft Net. After i 45s all the corners n fiberglass it, the box is going to be 4.5cuft Net, . Im puting 2 RFT212D2 in it. i wanted the box to be tuned to 40hz, but i don't know how long both ports has to b. All i know is that the diameter of each ports are 3" n is 16.5"high. I freakin looked every where on the net n so far none of the site help. So can any one give me advice. Thanks Quote Link to comment Share on other sites More sharing options...
scratchy Posted April 11, 2007 Report Share Posted April 11, 2007 how big are your damn 45's? Make sure youve got the right volume and then Ill help you out Quote then im rambo bitch Link to comment Share on other sites More sharing options...
had001 Posted April 11, 2007 Author Report Share Posted April 11, 2007 how big are your damn 45's?Make sure youve got the right volume and then Ill help you out 45s might be 3". But im very sure the box is going to 4.5cuft Quote Link to comment Share on other sites More sharing options...
sean 371 Posted April 11, 2007 Report Share Posted April 11, 2007 That makes no sense. 1.5 cubic feet isnt lost to 45's and sub displacement. I dunno if youre figuring in port displacement yet, but you shouldnt be because you have found your port length yet. Quote A couple links to some box builds: Tahoe Box 1, Tahoe Box 2, Nissan Titan, VW GTI, Mini-Bump, Hummer H2, Ford F-150 My own car builds (current setup --- under construction): Overall Thread, Kickpods, Dash, Back Doors Subwoofer Wall Link to comment Share on other sites More sharing options...
scratchy Posted April 11, 2007 Report Share Posted April 11, 2007 even if they were that big man, id go with smaller 45's Quote then im rambo bitch Link to comment Share on other sites More sharing options...
had001 Posted April 11, 2007 Author Report Share Posted April 11, 2007 That makes no sense. 1.5 cubic feet isnt lost to 45's and sub displacement. I dunno if youre figuring in port displacement yet, but you shouldnt be because you have found your port length yet. so wat should i do then make the box a little smaller?? Quote Link to comment Share on other sites More sharing options...
sean 371 Posted April 11, 2007 Report Share Posted April 11, 2007 (edited) No, 4.5 cu ft NET is fine for 2 12's. You could go bigger if you wanted though its up to you. net volume means excluding port and sub displacement. So pick a volume, and you then when you go to design the box you'll have to alter the dimensions to account for all the extra displacements from the subs and port. Edited April 11, 2007 by sean 371 Quote A couple links to some box builds: Tahoe Box 1, Tahoe Box 2, Nissan Titan, VW GTI, Mini-Bump, Hummer H2, Ford F-150 My own car builds (current setup --- under construction): Overall Thread, Kickpods, Dash, Back Doors Subwoofer Wall Link to comment Share on other sites More sharing options...
scratchy Posted April 11, 2007 Report Share Posted April 11, 2007 no, smaller 45's Quote then im rambo bitch Link to comment Share on other sites More sharing options...
had001 Posted April 11, 2007 Author Report Share Posted April 11, 2007 even if they were that big man, id go with smaller 45's im new at dis, im sooo geting lost. ok so make the 45s smaller would give me more cuft? Quote Link to comment Share on other sites More sharing options...
scratchy Posted April 11, 2007 Report Share Posted April 11, 2007 yes, because youl have more area inside your enclosure Quote then im rambo bitch Link to comment Share on other sites More sharing options...
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