Box Port Help

[nc1go]

I am using Orion P12D2 Subs that are needing about 13.5" long and 4" wide ports. Problem is my box is 14.5" tall and 12" deep. can I use 2 ports?

Thanks,

James

65 Galaxie Convertible

05 BMW K1200LT

Pioneer 9600 Rec.

Orion 8002 amp

Kenwood Kac9200 amp

Orion C6.2

Pioneer 5 1/4

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[95Eclipse 10+ year member]

someone correct me if I am wrong, but I believe as long as the port(s) meet the specs, you can use multiple ports... so, I would say divide the length in half and you should be alright by using two 6.25 inch long ports...

 

[nc1go]

sounds right to me just checking

 

[amedeuce 10+ year member]

No 2 ports changes things. You cant just have a port let's say 4" round by 30 inches. and you want 2 ports so you make it 2 4" ports by 15" it does change the tuning....

 

[Beat_Dominator 5,000+ posts]

More ports = longer individual lengths.

You have to make the port smaller diameter to decrease the length.

 

[95Eclipse 10+ year member]

okay, so what your saying is instead of using 2 ports @ 4" Diameter, use 2 ports @ 2" diamater at the 6.75" long...??

 

[SPL140.2 5,000+ posts]

dont forget the more ports the more internal air space it takes up

 

[req 5,000+ posts]

just stick the ports on the OUTSIDE of the box //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

lol - dont do that //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

you SHOULD be able to cut the DIAMATER and the LENGTH in half and achieve the same tuning.

just tested it - and that works. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

if you have a 4"x10" round port - you can cut it in half (2x10) and put TWO of them in to achieve the same tuning. careful tho - the smaller the port - the eaiser it is for port noise to rear its ugly mug! //content.invisioncic.com/y282845/emoticons/uhoh.gif.c07307dd22ee7e63e22fc8e9c614d1fd.gif

 

[Beat_Dominator 5,000+ posts]

Req, your math is retarded //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

2x10 or 2x5 make up your mind with your "SHOULD be able to cut the DIAMATER and the LENGTH in half" //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

 

[bcarpenterfhl 10+ year member]

yea, one 4 inch diamter tube does not equal two 2 inch diamter tubes.....

 

[JimJ 5,000+ posts]

lol - dont do that

Why not? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif PeaveyBassist built an excellent ported box for an e8a.44 that had almost the entire box outside the box, due to space requirements - it looked like a little steam engine with the smokestack coming out of it //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif Sounded pretty good, IIRC...