D-train-13k Posted January 5, 2012 Report Share Posted January 5, 2012 So where should the tuning be? with the numbers i've got right now i'm at... 8.13 sealed before displacement of bracing 17.52 ported after sub and port displacement 17.19 area per foot 48.06hz tuning 2.16:1 ratio that looks good bring the sealed side up a little. get closer to 1.5 per sub The IrishmanCheck out my build hereXL 4th order wall build logIn Progress:alpine cda HU4th order Bandpass2xl 15's1- ab 400.1 (gonna be two hopefully)4- Crescendo 8's2- xts crecendo supertweeters 2 sq super tweetsMb quart 4.125Mechman 270a alt1- xs D27003- xs XP3000 4- odessey pc1700seller feed back threadhttp://www.stevemeadedesigns.com/board/topic/136418-d-train-13k/ Link to comment Share on other sites More sharing options...
tctdh11 Posted January 5, 2012 Report Share Posted January 5, 2012 So where should the tuning be? with the numbers i've got right now i'm at... 8.13 sealed before displacement of bracing 17.52 ported after sub and port displacement 17.19 area per foot 48.06hz tuning 2.16:1 ratio that looks good bring the sealed side up a little. get closer to 1.5 per sub Can't do it with the max dimensions unfortunately TEAM DC www.dcsoundlab.com 2003 Tiburon GT V6 6 Speed Ported Clam 6 12" DC Audio XL M2's 2 American Bass 1100.1 1 American Bass 350.4 3 D3100, 1 D975, 3 D925 Second Skin Damp Pro and Spectrum. About 75% done 153.6 Sealed on dash at 34hz My OLD Build Log New Build Log.. DC XL M2 4th Order in my Tiburon Link to comment Share on other sites More sharing options...
99fullsizechevy Posted January 5, 2012 Report Share Posted January 5, 2012 Kinda sucks, stepside bed looks crazy but there isn't much room Laying frame soon.. System has to wait Link to comment Share on other sites More sharing options...
D-train-13k Posted January 5, 2012 Report Share Posted January 5, 2012 So where should the tuning be? with the numbers i've got right now i'm at... 8.13 sealed before displacement of bracing 17.52 ported after sub and port displacement 17.19 area per foot 48.06hz tuning 2.16:1 ratio that looks good bring the sealed side up a little. get closer to 1.5 per sub Can't do it with the max dimensions unfortunately polyfil The IrishmanCheck out my build hereXL 4th order wall build logIn Progress:alpine cda HU4th order Bandpass2xl 15's1- ab 400.1 (gonna be two hopefully)4- Crescendo 8's2- xts crecendo supertweeters 2 sq super tweetsMb quart 4.125Mechman 270a alt1- xs D27003- xs XP3000 4- odessey pc1700seller feed back threadhttp://www.stevemeadedesigns.com/board/topic/136418-d-train-13k/ Link to comment Share on other sites More sharing options...
tctdh11 Posted January 5, 2012 Report Share Posted January 5, 2012 I mean... that'd work lol I'm just making it on sketchup for the fellas. got some new number due to having to change the port. Didn't change much at all tho.. 8.13 sealed before 17.56 after sub and port 17.30 port area per foot 48.44hz tuning 2.16:1 ratio still TEAM DC www.dcsoundlab.com 2003 Tiburon GT V6 6 Speed Ported Clam 6 12" DC Audio XL M2's 2 American Bass 1100.1 1 American Bass 350.4 3 D3100, 1 D975, 3 D925 Second Skin Damp Pro and Spectrum. About 75% done 153.6 Sealed on dash at 34hz My OLD Build Log New Build Log.. DC XL M2 4th Order in my Tiburon Link to comment Share on other sites More sharing options...
D-train-13k Posted January 5, 2012 Report Share Posted January 5, 2012 I mean... that'd work lol I'm just making it on sketchup for the fellas. got some new number due to having to change the port. Didn't change much at all tho.. 8.13 sealed before 17.56 after sub and port 17.30 port area per foot 48.44hz tuning 2.16:1 ratio still that will work just if the box is peaky throw some polyfil in the sealed side The IrishmanCheck out my build hereXL 4th order wall build logIn Progress:alpine cda HU4th order Bandpass2xl 15's1- ab 400.1 (gonna be two hopefully)4- Crescendo 8's2- xts crecendo supertweeters 2 sq super tweetsMb quart 4.125Mechman 270a alt1- xs D27003- xs XP3000 4- odessey pc1700seller feed back threadhttp://www.stevemeadedesigns.com/board/topic/136418-d-train-13k/ Link to comment Share on other sites More sharing options...
Purplehaze Posted January 5, 2012 Author Report Share Posted January 5, 2012 You guys are not factoring in the displacement of the wood. My figures were correct, trust me. Check them again, I took out the wood when I made this up. .75" on the sealed and .75 on the ported. You guys think I don't got this or something? Jk, thanks for all the helpful advice! Kickin' Cruiser Seller Feedback Stage 3 Dash, Door Panels,4th Order wall 4 - 15'son a DC 5.0K 2 DC 5.0K'sSolo X 15 (v.2) Sub Build Link to comment Share on other sites More sharing options...
sprkn_ranger Posted January 5, 2012 Report Share Posted January 5, 2012 Does the polyfill really work? What's the theory behind that? Check out my build log! 4 Havocs in a blowthrough http://www.stevemeadedesigns.com/board/topic/187506-sprkn-rangers-blowthrough-build/ Link to comment Share on other sites More sharing options...
Purplehaze Posted January 5, 2012 Author Report Share Posted January 5, 2012 Okay, so I came up with some new numbers, same design. See what you guys think of this one? External: W 47" L 68" H 18" Internal: W 45.5" L 66.5" H 16.5" Sealed Inside: W 7.208" L 66.5" H 16.5" 4.08ft3 x2 1.35ft3 per sub after displacements Ported Inside W 29.583" L 66.5" H 16.5" 16.89ft3 after port, sub, and bracing 2.81ft3 per sub Port H 14" W 18" L 6" - 3" external 14.92in2 port area per foot 252in2 port area total 46hz tuning I just went over all of this again, and it is all correct. Kickin' Cruiser Seller Feedback Stage 3 Dash, Door Panels,4th Order wall 4 - 15'son a DC 5.0K 2 DC 5.0K'sSolo X 15 (v.2) Sub Build Link to comment Share on other sites More sharing options...
D-train-13k Posted January 5, 2012 Report Share Posted January 5, 2012 Does the polyfill really work? What's the theory behind that? polyfill basically slows down the waves. so creates less pressure. therefore it basically tricks the sub into thinking the box is bigger than it really is The IrishmanCheck out my build hereXL 4th order wall build logIn Progress:alpine cda HU4th order Bandpass2xl 15's1- ab 400.1 (gonna be two hopefully)4- Crescendo 8's2- xts crecendo supertweeters 2 sq super tweetsMb quart 4.125Mechman 270a alt1- xs D27003- xs XP3000 4- odessey pc1700seller feed back threadhttp://www.stevemeadedesigns.com/board/topic/136418-d-train-13k/ Link to comment Share on other sites More sharing options...
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