Hi and welcome to the board. The RE SE has been discussed many many times here. If you type that in the search option you will find a wealth of information on this sub.
I realize the Sx is better but Im trying to build a decent system on a budget. I searched and looked through some threads but really saw nothing saying what kinda power they could take.
For burps in the right box I'm sure it would take 1000+ easily. I have two in a sealed box on a sundown 1500 and that is more than they need for daily. Fun drivers that don't need a ton of power to get moving. If you're on a budget give them 600w and you will be happy.
ive got about 850 going to my se10... I'm sure it can take a little more, but its loud enough for me. The thing i love about the se is that is sounds so clean getting as loud as it does. hope this helps...