what size external aero?

[btlking 10+ year member]

box is 5.5 cubes looking to do between 35 and 40 hz no clue what size or length to use

also wheres a cheap place to order?

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[Punk In Drublic 10+ year member]

Partsexpress.com

 

[RAM_Designs 5,000+ posts]

2 6"ers cut to 16" will give you a 37hz tune...assuming the 5.5ft^3 is after sub and port displacement. You could also do 4 4"ers cut to 15" to get the same tune.

 

[Lakota 5,000+ posts]

http://www.psp-inc.com