Senior VIP Member
I have a box that iv alreayd built but im ganna make some changes i want to put in a changble port but i cant figure out how to calculate for the port area and lenght, the box is about 12.5 cubes wiht no port or subs. im looking for a port that will tune to 34 and then a comp port @ bout 47.
A New Begining Starting Over
2003 F-150 extended Cab
Head unit: Pioneer 880
Speakers: JBL comps
Amp: JBL 100x4
Sub Amp: ?
Subs: Possible 4 SX 15's or 2 SX 18's
Box:18-20 sq ft @ 30
Batts: Still Need
alt: mechman still to order
Wire: Lots of 1/0
refs: rem, mihklo, ilaydit, Mirage_Man,Looney_Tune,fawd06, LuckyT
1/1 of SexualConstipation
i believe you'll need more details like sub displacement .....etc...... but I'm a newb who doesn't know anything beyond that.....sorry
Car : 1988 Pontiac LeMans Aero-Coupe
aka 'The Death Rocket'
HU : DEH-16
Fronts : Infinity tweets
Rears : XS-R6941
Subs : (2) XS-L100P5W
Sub Amp : Memphis 16-PR 150.2
Enclosure : Sub Zone sealed (2 cu. ft.)
Hitting 130 dB* with this setup.....Priceless
Originally Posted by Slammed
I throw poop at squirrels
*130 dB rating is not guaranteed. Reading was done with a Scosche Boom Stick and therefore can not be relied upon.
Everything stated by me is my OPINION....if you don't like it I don't care......
Senior VIP Member
i know that the sub dis is .36 cubes, besides that all i need to calc is the port displacment , but i cant do that til i figure out how big it needs to be compared to the size of the box.
A New Begining Starting Over
2003 F-150 extended Cab
Head unit: Pioneer 880
Speakers: JBL comps
Amp: JBL 100x4
Sub Amp: ?
Subs: Possible 4 SX 15's or 2 SX 18's
Box:18-20 sq ft @ 30
Batts: Still Need
alt: mechman still to order
Wire: Lots of 1/0
refs: rem, mihklo, ilaydit, Mirage_Man,Looney_Tune,fawd06, LuckyT
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