I have an opportunity to acquire this center channel at a great deal. I'm no longer content with the entry-level center that I seem to have outgrown. I'm hesitant to make the purchase because its spec sheet indicates its rated at four ohms. My other loudspeakers are 8-ohm. Although I can't articulate why, I suspect this arrangement will reak havoc on my Yammy 5790. Is my suspicion founded?