i sell jbl and have had great luck with power series subs. for 10s 1.25 cubes net with a 4" aero sounds great off a gto7001. the 12s like 1.75 cubes 1 4" aero tuned 33hz and a gto7001. very common sub/amp combo i sell, but now the power series has been replaced by the new MS line and they sound...