Well my friend...I too have a 2007 RE XXX 12".
I personally think 2600RMS is too much...as I put a Sundown 3000D on it and wired it to 1 ohm. WAY to much power for that subwoofer. It did not like it at ALL.
I took it out, re-wired the subwoofer to 4 ohm, and let it see about 800-1000 watts and for that amount of power....sweet jesus...its off the chain loud.
I think the most power I'll ever put to one would be about 1700-1900 watts, as they only need small boxes to get loud and dont require a lot of power to do it.
My opinion though...You bought an awesome subwoofer, but want to go cheap on the amplifiers...they would work though, but you can find better for the money.
Try finding a SAZ 1500D Sundown, in my opinion, it'd be a perfect match.//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif