The listed recomended RMS is at 60W. These speakers can handle more right? I was thinking about using a JL 300/2 to power them...

 

the listed rms is what you should go for if you put to much you could blow them go with the 60 watt rms to be safe

 

So if I run them off the 75x2 channel of the JL 450/4 they should be ok?

 

look for a 50x2 amp should work better then 75x2 why because 75 watts could still blow it and 50 watts is 10 watts less unless you can find a 60x2

 

I'm sure running 75 watts is fine because there is no way those speakers are going to blow if 61 watts gets on them. Plus, Focal is a good speaker and I would think you could easily put more power on them with no worries. I used to send 100 watts from a JL amp to my Infinity Ref components, and they were fine...