gamapimp

I currently have a bl 15 i know its rated at 1000 watts but i have a rockford t1500 and the sub can only be wired to 1 or 4 ohm. can the subwoofer take the whole 1 ohm load from this amp. if i turn the gains down on the amp does that reduce the amount of power going to the sub or will i still feed it the 1500 watts+ either way.