Hey I'm tryin to make my first sub box n im wonderin if i should go wit 3jl 10w3v1's or 2 10's n a 12" in the middle? I would go wit the latter except i heard that havin dif sizes can cancel the sounds. If this is true then ill go with the 3 10's. I'm also wonderin if i should port them or used a sealed box. Im concerned about how much space it will take up cuz i have a mazda millenia n also the ease of buildin it. Any suggestions would help out alot. Thanx