greatblack Posted May 18, 2011 Report Share Posted May 18, 2011 so i designed a box for my fi q 18. its 7.1 cu f before displacement which is .25 or something close to that. this is going to be a sub up port back setup. using 3/4 inch mdf dimensions 34 width 14 height 32 deep (inches) Port 6 wide 12.5 high 24 long (inches) port area is 75" is that a good number. and i feel like 6 inches wide is really big. will i be ok? Someone told me i should have at least 80^2 of port area but to achieve that my port has to be 6.5 inches wide and i feel like 6 is already to big so i thought i'd ask. alternate Port with *81^2 6.5 wide 12.5 high 26.35 long also do you think i need internal bracing? if so where, how, and what kind? Quote look at my super internets it beast! http://speedtest.net/result/906958776.png Link to comment Share on other sites More sharing options...
Amerrricuh Posted May 18, 2011 Report Share Posted May 18, 2011 this is my box i just made for my fi bl 18. without bracing it with mdf heres the dimensions of the box. almost the same as what you want. Quote (UNDER CONSTRUCTION) Kenwood KIV-700 headunit 2 18" sundown Z.v3s 13.5^3 wall tuned @ 28hz SAZ-3500 DC power 270amp alt JL c2 650 AP600.4 XS 1200 under the hood XS 3100 in the trunk 1/0 gauge big 3 25^2ft audio technix ^^ c-fuzzy ur an idiot, my 15" soround is waay bigger cuz its a tall sorround, on top of that I HAVE A BIGGER MOTOR... oh yeah and fuck u suck my dick i got your hoes! anywhere they want to. They cant hear anyone telling them otherwise. just because its bigger doesnt make it any different. they just piss people off faster and farther away. Link to comment Share on other sites More sharing options...
Amerrricuh Posted May 19, 2011 Report Share Posted May 19, 2011 im adding a second baffle tomorrow and i will make a video of it to show the difference. you need bracing depending on what power you are running. im running a saz-1500 and i NEEEDD bracing. Quote (UNDER CONSTRUCTION) Kenwood KIV-700 headunit 2 18" sundown Z.v3s 13.5^3 wall tuned @ 28hz SAZ-3500 DC power 270amp alt JL c2 650 AP600.4 XS 1200 under the hood XS 3100 in the trunk 1/0 gauge big 3 25^2ft audio technix ^^ c-fuzzy ur an idiot, my 15" soround is waay bigger cuz its a tall sorround, on top of that I HAVE A BIGGER MOTOR... oh yeah and fuck u suck my dick i got your hoes! anywhere they want to. They cant hear anyone telling them otherwise. just because its bigger doesnt make it any different. they just piss people off faster and farther away. Link to comment Share on other sites More sharing options...
greatblack Posted May 19, 2011 Author Report Share Posted May 19, 2011 (edited) i'll be running a aq1200 if that helps well i've got this 1" board of mdf that i could add as a second baffle i'm pretty sure there is enough wood. would that be enough ? Edited May 19, 2011 by greatblack Quote look at my super internets it beast! http://speedtest.net/result/906958776.png Link to comment Share on other sites More sharing options...
Team808 Posted May 19, 2011 Report Share Posted May 19, 2011 port area is too small, do 14-16 sq inches per cubic ft. Quote Member of Team 808 Member of Team North East Spl Link to comment Share on other sites More sharing options...
Amerrricuh Posted May 19, 2011 Report Share Posted May 19, 2011 yes Quote (UNDER CONSTRUCTION) Kenwood KIV-700 headunit 2 18" sundown Z.v3s 13.5^3 wall tuned @ 28hz SAZ-3500 DC power 270amp alt JL c2 650 AP600.4 XS 1200 under the hood XS 3100 in the trunk 1/0 gauge big 3 25^2ft audio technix ^^ c-fuzzy ur an idiot, my 15" soround is waay bigger cuz its a tall sorround, on top of that I HAVE A BIGGER MOTOR... oh yeah and fuck u suck my dick i got your hoes! anywhere they want to. They cant hear anyone telling them otherwise. just because its bigger doesnt make it any different. they just piss people off faster and farther away. Link to comment Share on other sites More sharing options...
greatblack Posted May 19, 2011 Author Report Share Posted May 19, 2011 so it doesn't matter how wide the gap is cause thats what i'm worried about. Quote look at my super internets it beast! http://speedtest.net/result/906958776.png Link to comment Share on other sites More sharing options...
greatblack Posted May 19, 2011 Author Report Share Posted May 19, 2011 port area is too small, do 14-16 sq inches per cubic ft. for q daily it needs to be that big ? Quote look at my super internets it beast! http://speedtest.net/result/906958776.png Link to comment Share on other sites More sharing options...
blownengine Posted May 19, 2011 Report Share Posted May 19, 2011 Its actually going to be alot wider if you use 14-16 cubic inches per foot. Your looking at 99-140 inches of port area. Remember an 18 moves alot of air so a big port is ok Quote 2003 Dodge Ram 1500 SLT (Yea its got a Hemi)Alpine CDA-105KnuKonceptz 0ga CCA Big 3 with Yellow Top 15" SoundQubed HDC3DC Audio 1.2K (Bass)Pioneer 6x9's (Front)Pioneer 6.5's (Rear)Kicker 3.5's (Dash)Sony amp on the highs. (Hey it was free) Link to comment Share on other sites More sharing options...
greatblack Posted May 19, 2011 Author Report Share Posted May 19, 2011 Its actually going to be alot wider if you use 14-16 cubic inches per foot. Your looking at 99-140 inches of port area. Remember an 18 moves alot of air so a big port is ok i get that but whenever i see boxes i never see the port being more then maybe 4 inches wide. am i calculating port area right? Port h*w Quote look at my super internets it beast! http://speedtest.net/result/906958776.png Link to comment Share on other sites More sharing options...
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