Need aeroport expert for a couple aeroport questions answered for a "aeronoob"

[05pontiac08 10+ year member]

im building a box for 2 15" obsidian v2s theyll be on 600 each daily. before woofer and port displacement im at 7 cbft. now ive researched quite a bit and the few different calculators ive used seem a little off. im aiming for 32hz and for a 4" dia. port there saying itll need to be around 1.79" in length??? that seems way off to me.

any aeroport experts wanna help me out?

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[n8skow 10+ year member]

What are the dimensions of the box?

What is the displacement of the subs?

 

[pro-rabbit 5,000+ posts]

Are you trying to use 1 4" port of that setup?

I thought you were using the comp 12's?

 

[slim2fattycake 10+ year member]

for 7 cubes net, you need more than 1 4" aero.

 

[fasfocus00 5,000+ posts]

for 7 cubes, I'd use at least 3 4" aeros

 

[05pontiac08 10+ year member]

sorry its been a bit. been busy at work. the box dimensions would be 20.5"DP x 40.5WD x 14.5HT inside dimensions. woofer displacement is .19"^3 each. and i just relized i put 4" i ment 6" aero port. and ya pro rabbit my deal with getting some feel through so on to different things

 

[Jerhemy 10+ year member]

I would shoot for more port area with a box that big, you'll probably land around 6cubes after port and sub displacement depending on the size of the port you pick.

I had two sa 15's in 6 cubes after displacement and used a 9" aero 17" long. tuned me to 35ish

 

[05pontiac08 10+ year member]

so maybe 2 6" aero ports 9" long?