4 12s in a 8cu. ft wall need anwsers

[plumbcrazy 10+ year member]

box is 36h x 40w x 12d right at 8.01 wanting it tuned around 34hz im looking for around 96 to 130 sq inches of port so how would i figure out sq inches of a 4 " aero port and how many i would need to get around 100 sq inches of port so any help would be great thanks

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[basscort2009 5,000+ posts]

thats alot of 4s. but formula is pi x r^2 so...

3.14 x 2^2 = 12.xx so you would need like 10 4s . why would you want to do 4s? just get like 4 6s

 

[Toone 10+ year member]

they would be lengthy with that many ports