-While running one 8 ohm cab won't get much output from the amp, does it matter which output you hook up one cab to?
> No, it does not matter. And I believe you should be getting 500 watts at 8 ohms which is pretty loud. Maybe it's your cab. What are you using?
-Also, you can run one or two 4 ohm cabs on this amp too, correct? I think Jule told me that the previous power amp was not capable of running at 2 ohms, but the Demeter is. Not that I have any 4 ohm cabs, but if I want to buy some, I'd like to know beforehand.
> You can only use one 4 ohm cab, not two. The Demeter nor the M700 is capable of safely handling a 2ohm load. Perhaps you misunderstood Jule. I actually think I remember Jule stating that the M700 could possibly handle a 2ohm load for a short period of time but he does not advise it, and that it probably is not safe to do, and is NOT recommended. So either use two 8ohm cabs, or one 4ohm cab.