1000 W DAYTON FOLDBACK PA/DJ SPEAKERS+ what amp?

Well I hope you intend to use these for the application for which they were designed: Foldback stage monitors. They won't work well for much else. Given that, the 1000 watt rating is an absolute maximum, peak rating and I imagine that the continuous rating is around 250 watts, if that much. Your choice of amplifiers depends on how you are using them - what you will be driving them with. As they are intended to be used, the "Monitor Out" of a mixing board would be the logical answer to that. In that application a power amplifier in the range of 200 Watts RMS @ 8 Ohms would certainly suffice. Any reputable brand, Crown, Peavey, Behringer, etc,.