Jensen Posted February 13, 2009 Report Share Posted February 13, 2009 i purchsed a box for my 2 Rockford P215d4's today and was wonding if someone can help me figure out what it is tuned at. I am running a profile AP1200 in my 98 Tahoe. The dimensions of the box is 42" x 17.5" x 17.5" (outside dimensions on 3/4 inch MDF) L vented design. not sure how to figure out port size.... HELP Please Quote Link to comment Share on other sites More sharing options...
2000s-10 Posted February 13, 2009 Report Share Posted February 13, 2009 gunna prolly need the dimensions of the port itself to figure out the tuning of it. Quote 1999 grand prix gt kenwood x994 head unit 1/0 big 3 all shok industry single run to the back New mid/highs coming not sure what Soundqubed q2200d at .5 (have) 2 soundqubed hdc3 12s (have) New box to be built.. sealed firing forward (yet to be designed) 200 amp alt not sure exact size or manufactor xs power batts Link to comment Share on other sites More sharing options...
chewie Posted February 13, 2009 Report Share Posted February 13, 2009 (edited) Take the pre measures to never buy a prefab. That's how Most prefabs are around 40hhz. At least that's what I found Edited February 13, 2009 by cerwinvega Quote 91 dodge colt gt.. 4 custom t600 15s audioque 3500d.1 tuned to 25 hz... stay tuned. blazer stroker 15 brutus bxi2006d terrible voltage drop 145.4@38HZ... SEALED LEGAL Aim: chewieft09 www.t3audio.com carpe diez nuts !! my house is louder than your car... Link to comment Share on other sites More sharing options...
creyc Posted February 13, 2009 Report Share Posted February 13, 2009 Do an impedance sweep? Quote 2001 Chevy Blazer (2) SAZ-3000Ds (2) custom 18" Madmax subs in a second row wall Rockford 600-4 Pioneer PRS components Pioneer P800PRS deck Link to comment Share on other sites More sharing options...
porkchop Posted February 13, 2009 Report Share Posted February 13, 2009 internal height x width x depth divided by 1728.....this is cubic feet, trying to find port tunning info for myself right now. hope this helps Quote My daughter's (kimberly) hairtrick via the duckman Link to comment Share on other sites More sharing options...
Jensen Posted February 13, 2009 Author Report Share Posted February 13, 2009 yeah I would've built one but don't have the tools or the know how. As for the Port what exactly do I need to measure. not sure since its a L-vent... Sorry new at this kind of thing.... Quote Link to comment Share on other sites More sharing options...
Jensen Posted February 13, 2009 Author Report Share Posted February 13, 2009 Do an impedance sweep? Not sure what that is... LOL Quote Link to comment Share on other sites More sharing options...
chewie Posted February 13, 2009 Report Share Posted February 13, 2009 yeah I would've built one but don't have the tools or the know how. As for the Port what exactly do I need to measure. not sure since its a L-vent... Sorry new at this kind of thing.... Measure width. Then height Then depth to the corner of the l and then from that point to the end of the port. Quote 91 dodge colt gt.. 4 custom t600 15s audioque 3500d.1 tuned to 25 hz... stay tuned. blazer stroker 15 brutus bxi2006d terrible voltage drop 145.4@38HZ... SEALED LEGAL Aim: chewieft09 www.t3audio.com carpe diez nuts !! my house is louder than your car... Link to comment Share on other sites More sharing options...
Jensen Posted February 13, 2009 Author Report Share Posted February 13, 2009 Measure width. Then height Then depth to the corner of the l and then from that point to the end of the port. Gotcha might take me a few have to take the speaker out> Quote Link to comment Share on other sites More sharing options...
porkchop Posted February 13, 2009 Report Share Posted February 13, 2009 mine is not an L so whats next....your helping two guys here! Quote My daughter's (kimberly) hairtrick via the duckman Link to comment Share on other sites More sharing options...
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