Thecrazycunuck Posted May 16, 2013 Report Share Posted May 16, 2013 So this is my first time building a box and the past couple days I have been looking at designs. What I decided to make was a 2 common wall slot ported box. It is for 2 15" CVR's on a 1700.1 hifonics. Tuned at 31-32 Hz. Basically I just want to know whether I did it right or not. If I messed up please tell me where I messed up at. I am including 3 pictures. 1 of torres and 2 of sketchup. The dimensions are in the pictures but in case you cannot see the box exterior dimensions are 44"Wx27.5Dx16.75H and the port is 7.5"Wx15.25"Hx30"L. I left the port length drawn in the picture and the measurements are 1' 7 5/8" + 7 15/16" + 2 7/16" which should equal 30. Also the width of the port by the wedge and in the back is 3". Thanks for all your replies hope I included enough info. Link to comment Share on other sites More sharing options...
john253a Posted May 16, 2013 Report Share Posted May 16, 2013 you forgot to add sub displacement and try to keep the port at around 14 per ft once you do that you should have a bit more net if you can spare some more space do it, you wont regret it, and is there any resion you want it tuned that low, personal myself if you cant spare any space drop the port down and tune it closer to 35-36hz Link to comment Share on other sites More sharing options...
Thecrazycunuck Posted May 16, 2013 Author Report Share Posted May 16, 2013 Ok added displacement and now it is 32 hz will fiddle with demensions this after noon thanks for your response. Link to comment Share on other sites More sharing options...
Thecrazycunuck Posted May 17, 2013 Author Report Share Posted May 17, 2013 Ok so I made a few cuts today and 44" was a tad too wide, so now it is 41" wide and 7" port. The numbers are basically the same. Anyone elses opinion on this box please? I think it should work good but a second opinion would just bring me relief Link to comment Share on other sites More sharing options...
john253a Posted May 17, 2013 Report Share Posted May 17, 2013 Report the Torres screen shot of what will fit It make it a bit clearer and easier to understand what going on Link to comment Share on other sites More sharing options...
Thecrazycunuck Posted May 18, 2013 Author Report Share Posted May 18, 2013 Only things that changed were the width of the box and port. Hz is a little higher and I want to keep it lower because I mainly listen to rap/hip hop and dubstep. I've done research and they say it sounds good for those styles of music like that. I also cant get the port area per foot down without making the port width smaller, which puts down the Hz. (which is already low). The design is the same as the picture. Link to comment Share on other sites More sharing options...
john253a Posted May 18, 2013 Report Share Posted May 18, 2013 Drop the port down to 6.5" w And shorten the port length till you get back to 32-33hz You don't have to have a T-port to keep the port in middle of the box Link to comment Share on other sites More sharing options...
Thecrazycunuck Posted May 18, 2013 Author Report Share Posted May 18, 2013 It will work just as good without it? just having a straight port? Link to comment Share on other sites More sharing options...
Thecrazycunuck Posted May 18, 2013 Author Report Share Posted May 18, 2013 Ive also decided to go with 36hz, but then my port area is huge ;\. Link to comment Share on other sites More sharing options...
Thecrazycunuck Posted May 18, 2013 Author Report Share Posted May 18, 2013 Torres pics and sketchup Link to comment Share on other sites More sharing options...
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