Hello Steve,
I've fond memories of the SCM 20's. In fact, they were the first speakers that drew my attention to ATC. It was about 20 years ago, while I was walking through the hallways of a hotel during a Hi-Fi show, looking through doorways to see past the obscuring mass of bodies, trying to get a glimpse of what was being exhibited in each room, when suddenly...
...beguiling realistic-sounding music stopped me in my tracks, causing me to pause a moment, to gauge where the sound was coming from...
It about three or four doorways away, in one of the bigger rooms where Musical Fidelity was debuting their first "monster" power amp. I can't recall what was it called; I just remember them to be so massive-looking, taking centre stage on the floor, driving what I expected to be massive floorstanders as well. To my surprise

the MF was driving a pair of standmounts from a brand I'd never paid much attention to before, due to the mundane name and prior lack of exposure
I was stunned that something so "small" was able to draw me in, from so far out in the hallway, with it's siren song. Surely, the real speakers were somewhere else and I was actually looking at a static display!?
It was only on closer inspection that I realised that the mid/bass driver looks different from the run-of-the-mill drivers I normally see. Those were the biggest "centre domes" (relative to the rest of the driver) I've ever seen!!
And so, that was how one (amongst a select few) unforgettable Hi-Fi audio moment, came into being
Regards,
Malek