First, the "bi-amp" on the 606 uses the internal amp for the rear channels. Complete waste of time, but do what you want. It won't hurt (and it won't help).
Second, I decided to go with the M60's over the 80's due to my Onkyo 705's aversion to 4 ohm speakers. The 606 is the same.
Finally, I often listen to music with just my mains (no sub) using the "Pure Audio" mode. They sound terrific.
Darn. My cover is blown. (I'm a bit of a noob when it comes to audio equipment) The bi-amping I was referring to was indeed with the rear channels of the 606 receiver. I guess it would be a waste of time...
I didn't know Onkyo receivers don't play well with 4 ohm speakers... I guess that limits my choices to the M60s or M22s with a sub. Thanks for the info!
