what amp you have? i would do 3.5 tuned to 36, should do about 1-2 higher around 45-50hz...also use about 65in^2 port area...i already have the alpha n this ****er slams just want better numbers bassracing like mid 40s box is 4cubes 32hz
the v1s are a good bit different...id tune that box a bit higher, i have my v1's in 40hz, they love it.
and adjustable port, drop to 35, little to no difference with less port area and lower tuning.
but the 40hz with more port does sound a bit better