How many straight 6in round ports... 4-DC lvl-3 15's

[Jeepjones85 10+ year member]

Iv got 4 DC lvl-3 15's The box I built is chambered (two 15in subs per chamber)

and each chamber is 8.8cubic ft after sub's displacement... How many 6in round

stright pvc ports per chamber should I have

I went to http://www.psp-inc.com/ and my results tuned to 34hz

with 3--6in round straight ports per chamber 18.08in long each

Or should I go with 4 ports per side? cuz I hate that air noise when the ports are

not big enough?

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[18inchjeepin 10+ year member]

3 per side is enough I would think, are you made of money to buy 6 total?

 

[DBDRAGGUY 10+ year member]

I would think 3 total would be enough.

 

[Jeepjones85 10+ year member]

3 per side is enough I would think, are you made of money to buy 6 total?

Heck no Im buyin 6in pvc from the local hardware store and some black spray paint lol

 

[roarzorz 10+ year member]

For a daily setup I'd go with two on each side. For spl go with three each.

 

[Cabin_Pressure 10+ year member]

http://www.carstereo.com/help/Articles.cfm?id=31

 

[Jeepjones85 10+ year member]

The only thing I dont want is that port noise where it sounds like high pressure air

coming out of the port...Will I be safe with two 6in round ports per chamber for sure??