The last few posts in this thread will probably be of interest. Especially the following comment by member Schubert, although it pertains to one of Alta's smaller models:
Good luck. Regards,
-- Al
Schubert 6-7-2017
I heard the Alta 2-ways(4K) in Mpls. dealer recently , a magnificent speaker. Very easy on the ears, not a trace of "hi-fi" whatsoever .
If I were younger I would have bought them .
Good luck. Regards,
-- Al