HI guys,
A question arises that I did not find an answer on the web: Can I connect home speakers to a professional amplifier that has outputs 50V/70V/100V
But the diagram also shows low impedance direct outputs available. If they are, you can use those. For those purposes “low impedance output” = 4 to 8 ohm.
Most of them have that these days. I have a pair of commercial 1U rackmount Energy Star class D units that don’t, but most of the install stuff does these days. The usual brands like QSC, Crown… and all the low end stuff.