Limiting the current actually makes damage to the speakers more likely, to amplify (ha) on Randy's note.

I think I've heard of people using a 1900 with M80s, but don't quote me on that. I use a Harman/Kardon AVR525, which is rated at something like 85WPC into 4 ohms, so you can't just look at the watts RMS value and figure out if it'll be stable with M80s (or any 4 ohm speakers).

I am the Doctor, and THIS... is my SPOON!