Speaker question

Usher also makes the Mini One that’s very comparable in size/weight to the ATCs and are only $4090, in case you didn’t see those. 

https://soundapproach.com/usher-dancer-mini-one-tower-speaker-pair.html

A couple of the benefits of the ATC’s, and I have the SCM 40 V2, is that they are not picky about placement and they’re quite good off axis. So without knowing your situation, I don’t know if these things matter to you, but they mattered to me. in terms of their overall performance, I’ve been very happy with them above and beyond the two elements I mentioned. There are plenty of reviews to peruse about this. I bought them without hearing them ahead of time and as you can probably surmise, I have been very pleased.

How about at low volume? I’ve read that they really don’t start to sing until they start getting cranked up.

+1 @m669326 that the ATCs are less finicky about placement, and the Ushers I recommended definitely appreciate more breathing room to fully express what they can do, but so do ProAcs.  And yes, ATCs are not the best choice for low-level listening if that’s a big concern.  Always trade offs. 

My experience is not that they’re not bad at low volume, but that they get really good at higher volumes, creating a contrast that makes them seem a little worse than they really are. In general, any speaker with a flat approach, with no bass boost or additional screwing around, will seem to lose bass at low volume, simply because of the way our ears and brains work. The trade-off is that if the bass is right or preferable at low volume, when you crank it up it won’t be accurate anymore. The ATC’s are designed so that they are accurate at higher volume than many others. Anyway, those are my thoughts. I’m not any kind of expert.