ATC SCM40A vs ATC SMC20ASLT

[solwisesteve]

First time posting for a couple of years, in which time it looks like my previous login has expired. Anyway, not a problem.

Some advice please....

[Batavier]

I have been eyeing up a pair of 2006 Anniversary Active 50's for a while now, both I am unable to figure out if its worth buying these pre owned, or for...

[Mariner]

these seem to be a very early ATC model.
Anyone know more about these speakers?
With a switch between active and passive ...