infinity Posted March 14, 2012 Author Report Share Posted March 14, 2012 well keep it the same width, but in the process you shorten the two bends... it's difficult to explain but basically you just have to measure down the middle of the port and cut off the width until you get the right total port length. there's a method i use so it's not so guess and check but i can't really explain it. well keep it the same width, but in the process you shorten the two bends... it's difficult to explain but basically you just have to measure down the middle of the port and cut off the width until you get the right total port length. there's a method i use so it's not so guess and check but i can't really explain it. i kind of understand what you are saying.... So cant i just get the port length and divide it by 3 and maybe shorten the height a bit? will that work? Im just trying to get familiar with the t line enclosure and want to try something new Quote Link to comment Share on other sites More sharing options...
412 CVX Posted March 14, 2012 Report Share Posted March 14, 2012 well.. not really... you have to measure it down the middle of the port... go see how they did it in the T-line tutorial Quote Just say no to Ground Pounder Customs. My temp system build log More box buildssome cars do over 170db with one sub, so clearly my two 12"s can do that in my car, with my knowledge too! look out bitches! I'm with captain stupid. Link to comment Share on other sites More sharing options...
infinity Posted March 14, 2012 Author Report Share Posted March 14, 2012 alright. Im just gonna redesign a t line enclosure, but this time for a 10". I think that the 5" wont really do anything so let me see if i can get this right Quote Link to comment Share on other sites More sharing options...
infinity Posted March 14, 2012 Author Report Share Posted March 14, 2012 Ok so i got the math done, For my 10" with a fs of 30hz and the sd of 9 inches the port length will be 9.415 ft long and the port area that iis constantly needed is 60 sq in. From here, what should i do? do i just have to do trial and error to determine the box dimensions? Quote Link to comment Share on other sites More sharing options...
412 CVX Posted March 14, 2012 Report Share Posted March 14, 2012 how many square inches of port do you need? for example... if you had a driver with an sd of say 50 sq inches, you can make a port that's 5x10, 4x12.5 etc etc then measure down the middle of the of the port and then it's guess and check from there Quote Just say no to Ground Pounder Customs. My temp system build log More box buildssome cars do over 170db with one sub, so clearly my two 12"s can do that in my car, with my knowledge too! look out bitches! I'm with captain stupid. Link to comment Share on other sites More sharing options...
infinity Posted March 14, 2012 Author Report Share Posted March 14, 2012 how many square inches of port do you need? for example... if you had a driver with an sd of say 50 sq inches, you can make a port that's 5x10, 4x12.5 etc etc then measure down the middle of the of the port and then it's guess and check from there how many square inches of port do you need? for example... if you had a driver with an sd of say 50 sq inches, you can make a port that's 5x10, 4x12.5 etc etc then measure down the middle of the of the port and then it's guess and check from there well i have a 10" sub that needs 60 sq in of port. Also, what do you mean by measuring from the middle of the port? I read over the Quarter Wave / T-Line tutorial-UPDATED and it said nothing about the middle of the port, that's what im confused about Quote Link to comment Share on other sites More sharing options...
412 CVX Posted March 14, 2012 Report Share Posted March 14, 2012 Quote Just say no to Ground Pounder Customs. My temp system build log More box buildssome cars do over 170db with one sub, so clearly my two 12"s can do that in my car, with my knowledge too! look out bitches! I'm with captain stupid. Link to comment Share on other sites More sharing options...
infinity Posted March 14, 2012 Author Report Share Posted March 14, 2012 Ohhhhhh!!! I understand now! i thought that black line was the actual placement of the wood! now i understand! So now i just have to make a continuous port with 60 sq in and measure down the middle of the port! Thanks man! ill try and post the results later! Quote Link to comment Share on other sites More sharing options...
infinity Posted March 15, 2012 Author Report Share Posted March 15, 2012 alright! so i got my box design now. Height=15 in width=33.68 in depth=17.13 in port height=13.5 in port width=4.71 in port length=112.9 in I measured from the middle of the port and got 112.9. So im perfect with the port here is a pic of the box just want an approval of my design! Quote Link to comment Share on other sites More sharing options...
rusty959 Posted March 15, 2012 Report Share Posted March 15, 2012 a 6" length 45 is too much for this, that is restricting the airflow. When I did mine I made the center of the 45 the same distance from the corner (diagonally compared to the ports) as the width of the port. Im not sure if this is the best way but it won't be restricting airflow and it is assisting in changing the direction of the air Quote 2013 Subaru BRZ12" Orion HCCA on AQ 22001967 mustang restoration project: http://www.stevemeadedesigns.com/board/topic/110765-mustang-restoration-build-2011-edition/ Youtube: https://www.youtube.com/user/therusty959 Link to comment Share on other sites More sharing options...
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