One 12w7 getting 1k won't be able to outdo 2 12w6s combined. That's why I'm going the 2 sub 12w6 route and need to sell the w7. It's an impressive sub but won't be able to do what the other two combined can.if you have never used it, you should.
with 1500 watts it will be louder and sound better than a pair of other 12s.
w7 is a great sub.