I'll find that hard to believe...unless you have indeed clamped it. But the reason I find this hard is for one...To get your impedance to stay anywhere near 1 ohm, you would have to wire down to .5 (that is unless you have mastered box rise) And more than a few of the Team Kicker guys have said that, that amp doesnt like that much of a load. Second The reason kicker rates their amps at 2, is becuase, they dont gain all that much going from 2 to 1. If you have tested it to be as powerfull as the ZX2500.1 more power to you, and you have a very good box/electrical system.