I owned the older Focus(not the 20/20) for many years. They were very fine speakers, just became too big for my current room set up.
I found that power Amps like Krell or Pass really get the bass performance out of the Legacy's.
Because of the impedence dip, the bass speakers require that extra push.
Others have stated that lower power Amps work fine with them, but I still think you will not get the potential bass they can provide.
So, try it with your Amp and perhaps, eventually, get another Amp like what has been suggested for bi-Amping.
I found that power Amps like Krell or Pass really get the bass performance out of the Legacy's.
Because of the impedence dip, the bass speakers require that extra push.
Others have stated that lower power Amps work fine with them, but I still think you will not get the potential bass they can provide.
So, try it with your Amp and perhaps, eventually, get another Amp like what has been suggested for bi-Amping.