Hej
Just wanna say that I’ve had the ATC SCM 19v2 for about three years now. They are 20 cm from backwall and 230 cm from listening position. Room size about 3,9 x 4,5 m. Amp is an old tube amp (EL84 push-pull) with 35w. I`m usually listening at low to normal listening volume. Volume pot never higher than 10 o`clock so there is still more power to use (without distorsion, I`ve checked). Fatigue? Yes, with very bad recordings.
This speakers and this amp sounds wonderful together IMHO😀
Regards
Staffan