x2, I love how my sealed enclosure sounds but I miss the output of my ported enclosure. Its gonna come down to personal preference really. Thank you swift and jay-cee. I've only ever had sealed enclosures and weather i'm running 1000 watts or 1500 watts its always left something to be desired. I think I'm going to go with the BL in a ported box. Thanks Notorious, I'm going to look into fitting the 12" BL in a slightly smaller box or end up with the 10" BL.