Best options for active speakers $4k or below?


Want a simple but superb sounding all-inclusive active speaker for my elderly but loud-music-loving mother in NJ. Used is OK!

Thanks!
redwoodaudio
I appreciate the ideas. Thank you. Aside from the Elac, I don't think recording studio monitors are ideal, though.  The speakers would be in a medium sized living room not in near field.  Are these the only options? 
KEF has a version of the LS50 that is both wireless and active. That would be my hands-down choice! Partner them with a Bluesound Node 2i and a Tidal subscription!
+1 on Elac Navis. Both the tower and stantmount sound excellent.
I don't think recording studio monitors are ideal, though
Why not?