John, these Proms sound real bad. The soundstage is terrible. A real contrast to the following classical album which is an absolute joy to listen to.

https://open.spotify.com/album/3x0hWh1WSAJAsJ4QXySsKD?si=mcjd1VBiQeOdq0czmOpa4w

Of course your aged M22s can't do it justice and you should do yourself a solid and get M100s and let M5s ride on top of them upside-down. You'll need an ADA-1500 as well. Might as well trade in that 500 for a glorious 800.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated