fox_racin4 Posted March 14, 2010 Report Share Posted March 14, 2010 ok.. im going for daily/spl i plan on going to a few comps this year so i want to do decent at them would it be a bad idea to have an interchangeable port in a spl box? with one port tuned to say daily 35 and spl up near 40 subs are dd 9512fs with 3K on each max dems are 14 tall 31 deep and 36 wide i giguered i can get a 9x12.5 port ( slot) in and it would be tuned to areound 38 but with about 110 square inchs of port and 5 cubes net that sounds like... lots of port is it to much port? Quote 1998 gmc extd cab 12 crossfire C710s 4 SAZ-4500s 3 Singer 400A altsbuncha mids/highs Team Asshole Link to comment Share on other sites More sharing options...
Boon Posted March 14, 2010 Report Share Posted March 14, 2010 You won't notice feck-all difference going from 35hz to 40hz with those subs. Just build a DD box and you'll have it pretty much perfect. Do this one: 4.50^ft 72.0 sq" vent x 19" long Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
rc.btl Posted March 14, 2010 Report Share Posted March 14, 2010 i like the removable port idea i think ima try it for my dc's Quote 2004 Grand Prix HU: Alpine 9886 for sale Sub Amp:AQ2200d (possbly 2) Enclosure:BCP Designs. Best for the Money Electrical:1 Stinger SPV70 battery Subs:2 15 D2 AQ HDC coppers Wiring:0gauge power SoundQuest Wiring:0gauge ground Kicker 141.8 @ 28hz tl legal on the dash. 142.6 @ 33hz tl legal on the dash. Link to comment Share on other sites More sharing options...
fox_racin4 Posted March 15, 2010 Author Report Share Posted March 15, 2010 i got one.... 4.75 port is 8.5 wide 13 tall and i forget how deep but tuned to 38 Quote 1998 gmc extd cab 12 crossfire C710s 4 SAZ-4500s 3 Singer 400A altsbuncha mids/highs Team Asshole Link to comment Share on other sites More sharing options...
Boon Posted March 15, 2010 Report Share Posted March 15, 2010 23 inches per cubic foot? Dude unless you just want it to play farts you don't need all that port area. You have to make it so stupidly long that it doesn't work like a port any more, it just works like a box with a long wide hole in it. The port is a resonance chamber - if you can't get ALL the air in it to move then it doesn't actually work as a port... And that port is about what I would use for 2 15's in 10 cubes for a daily. Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
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