least port area

[frogcase2002 10+ year member]

What do you think the least port area I could get away with. With 4 cf

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[pro-rabbit 5,000+ posts]

What subs? What application? What kind of power? What kind of goals?

 

[T.I.K. 10+ year member]

I wouldn't go under 12in^2/ft^3, that's REAL low, you'd preferably be around 14in^2/ft^3. Keep in mind that those numbers are just rules of thumb.

 

[frogcase2002 10+ year member]

What subs? What application? What kind of power? What kind of goals?

I have a 4th order ported though my rear deck. A little over 4 cf after all displacements ported and and around 2.2 sealed.15" zcon on 3000 watts... my ports right now are 8x8 and I have a few at different tunings (removable ports) but with where the back window is I can only tune down to around 45 or so. But I think if I go smaller it could be shorter and I could tune lower with the space I have. I just wanna have one really low tuned port

 

[pro-rabbit 5,000+ posts]

If you are having issues with your low end in a 4th order it will likely come from your sealed section.

 

[frogcase2002 10+ year member]

If you are having issues with your low end in a 4th order it will likely come from your sealed section.

I just cant get a long enough port unless its smaller

 

[T.I.K. 10+ year member]

If you are having issues with your low end in a 4th order it will likely come from your sealed section.

could he stuff some poly fill in there to try and compensate?

 

[frogcase2002 10+ year member]

could he stuff some poly fill in there to try and compensate?

Already have.

 

[pro-rabbit 5,000+ posts]

Sounds like you should look at redesigning the enclosure a bit to get the results you want.

Altering port area in order to tune lower is not the best choice in most cases. I don't know your exact design or situation, but I would look at other options then just shrinking port area.