On your cable take the positive lead to the positive binding post on one of the M22's. Then the negative lead to the negative binding post of the second M22, then add a jumper cable from the negative to the positive binding posts of the two speakers.
I've never heard of that. This is considered safe and common?
Very cool. I'm using a paradigm bookshelf speaker for a center right now. I'll mess around with two of them and give it a try today