I'm leaning towards M22s as mains and a VP150 center, not sure about the surrounds yet.

My question is about the VP150 which the website says is 6 ohms but I thought I saw a post where someone from Axiom said it was more like 5.5. My receiver's (Onkyo 696) manual says that if all speakers are not 6 or greater I need to set it to 4 ohms (there are only two settings 4 and 6). What exactly are the implications of this? Does changing this impact the performance of the receiver?