Port for DD/RE hybrid

[photocrazy8 10+ year member]

Ok so the box I designed it 4.5 cubes per chamber and I want to tune to 35 Hz. I want to use the 4 inch Precision Ports. How many do you think i should use. I was thinking 2 or 3. Im leaning more towards 2 because it will be easy to fit in this box design. Any advise would be cool. Thanks, Andrew

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[Fast1one 10+ year member]

What size woofer? I would do atleast 3....two is not a lot of port area. ~25 sq in //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[photocrazy8 10+ year member]

What size woofer? I would do atleast 3....two is not a lot of port area. ~25 sq in //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

its a 15...

 

[prochobo 10+ year member]

I'm doing 2 in mine with external aeros. I just finished it and will post pics tomorrow //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[photocrazy8 10+ year member]

I'm doing 2 in mine with external aeros. I just finished it and will post pics tomorrow //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

i need these to be internal, maybe i will just got with a diff style of port that does not have that wide of a area to take up...any one know of a place that sells 4 in ports that can be cut to 12.5 in? should i just use PVC? //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[mazdakid 5,000+ posts]

why not just make a slot?

 

[photocrazy8 10+ year member]

why not just make a slot?

box is already built and im just waiting on the subs. i have always done slot ported and wanted to try something new this time.

 

[Fast1one 10+ year member]

its a 15...

In that case, atleast 60 sq inches, or 5 4 inch aeros...
Or go with two 6 in aeros...

 

[Wkbdkid 10+ year member]

http://psp-inc.com/

 

[Chevyaudio 5,000+ posts]

Yeah for a 15 I would go with at least 60sq inches of port.

 

[photocrazy8 10+ year member]

http://psp-inc.com/

tried those but the mounting width is huge. 7.25 for a 4 inch one....

 

[mazdakid 5,000+ posts]

do 2 round 6" pvc

 

[TypeRBass 10+ year member]

do 2 round 6" pvc

agreed. if you need 6" flares talk to me //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[photocrazy8 10+ year member]

agreed. if you need 6" flares talk to me //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

i would love those but my box is only 20 in deep and thats not enought room to get the 35hz tuning that i want //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif