Unless you are bi-amping, or bi-wiring, these posts should be connected(either by something Axiom installed, or internaly - less likely).
If the are bridged (connected together) you can use either. You are not getting the full contact area buy using less than the complete bundle of stranded cable. You are also creating an environment for short circuiting the amplifier if these happen to touch.
You may want to invest in some spades or banana plugs. Ensure these will accept wire of your size.
I am curious as to why the other Axiom speakers accepted 10g, but the M80 would not. Perhaps there are different binding posts. One would make the assumption that the flagship speaker would accept it.
Regards,
BBIBH
