brent379 Posted April 19, 2012 Report Share Posted April 19, 2012 ok...i dont want this to sound stupid but im still a noob to porting but that is a huge port...and it dont look like it has any length to it. since length is actually what tunes the box then shouldnt this port be pretty long??? i am definately NOT second guessing steve meade in anyway...but i have just seen ports like this several different times and i dont understand how they work. they just look like a giant hole lol. little help please! Quote Link to comment Share on other sites More sharing options...
412 CVX Posted April 19, 2012 Report Share Posted April 19, 2012 the port is actually pretty small relative to the box size. therefore it didn't need to be that long. buuutt usually you want to shoot for a larger port. in this case steve didn't have a whole lot of room to allow a larger port, so he did what he could with the space he had. 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...
brent379 Posted April 19, 2012 Author Report Share Posted April 19, 2012 Ya I could see that. The smaller the port area the shorter it has to be. Isn't rule of thumb for ports...aero 9-12 sq inches per cubic foot. .and slot ports 11-17 sq inches per cubic foot??? Quote Link to comment Share on other sites More sharing options...
412 CVX Posted April 19, 2012 Report Share Posted April 19, 2012 It is a good rule of thumb. Steve, however, bent the rules slightly It's usually good to manage as much port area as you can while keeping everything else where it should be. 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...
brent379 Posted April 20, 2012 Author Report Share Posted April 20, 2012 Ok next question...when planning out a ported box...say you want a 2 cubic foot box at 35hz... do u figure out the sub and port displacement and build the box a little bigger so that way when it's all said and done the sub actually has 2 cubes of free air space ...or do u just build a 2 cube box and call it good with what ever free air space is actually there??? Def a noob question I kno but u gotta work out the links to build something good Quote Link to comment Share on other sites More sharing options...
Sergeant_Skyrim Posted April 20, 2012 Report Share Posted April 20, 2012 Ok next question...when planning out a ported box...say you want a 2 cubic foot box at 35hz... do u figure out the sub and port displacement and build the box a little bigger so that way when it's all said and done the sub actually has 2 cubes of free air space ...or do u just build a 2 cube box and call it good with what ever free air space is actually there??? Def a noob question I kno but u gotta work out the links to build something good You do still want 2 cubes of free air space inside the box after taking out any displacements (port, subs, bracing, etc). Quote Build in progress Link to comment Share on other sites More sharing options...
medley123 Posted April 20, 2012 Report Share Posted April 20, 2012 Torres box calculator will help a ton with this, helped me with mine Quote 2006 Ford EscapeHead Unit: Kenwood KDC 352Subs: (3) 15" DC XL 15s with PSI recones, 1.4 ohm coilsSub amp: DD Audio M4 (Black Version)Door Speakers: (2) Crossfire 10s, (2) Hertz Coax.Mid/highs amp: Rockford Fosgate P500-4 Electrical:XS D3400 under the hood(3) XS XP3000s in the back2 runs of KnuKonceptz OFC 0 Gauge ran to the back (1 pos, 1 neg)Excessive Amperage 300 amp alt (FINALLY!) Link to comment Share on other sites More sharing options...
412 CVX Posted April 20, 2012 Report Share Posted April 20, 2012 click the help button up top, it pretty much explains everything 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...
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