Well I have bought my first DC sub actully a lv5 18 motor& basket. Plan to order a recone for it soon. It will be run off a DD z1 @.5ohm 2 zs3100s and a 250 amp alt. Mostly want a bada** daily ground pounder but am going to bassrace 149.9 and db drag. Right now I am planning on 5.25 - 5.5^3net and 90 sqin port @38hz, would like to use areos thier much easer to swap for comps an daily use but don't know what to go with 6",8" how many not sure how to figure area for an areo any help would be appericated