I'm a newish owner/user of Fritz Carbon 7 SE mk2 speakers.
I purchased directly from John last summer.
My listening is usually in the mid 60's (db's) with peaks in the low 70's. Sometimes when my wife is upstairs I'll listen very low and I'm astonished how, after allowing my hearing to acclimate to such a different presentation, how full and engaging the sound is. It's like those speakers don't give up the low end or the top end when the volume goes low. As long as I can keep my tinnitus in check, I can listen a long time at these late night low volumes and be totally in the music.
I couldn't be happier with that purchase. I sometimes swap in my Magnepan LRS's but they typically get pulled for the Fritz's after a couple of days.