Hey, I'm not pro with this, have had a couple of decent sounding systems in the past (crap by todays standards), but I'm getting ready to put jl 300/4 on my 4 6.5 kappa's, and I have a jl 500/1 for the sub 12w7. First of all, is the 500/1 enough to push the w7 in a sealed box? second, will I...