OK. But I've never seen a set of plastic RCA jacks. They don't hardly grip the male plugs at all. So loose. Also why would they make them different from the other set of RCA females next to them? I emailed to System Audio but have not gotten a response. The pics of the sub on the website clearly show two sets of normal looking RCA female connectors. Anyway I'm running the thing off the speaker terminals they also provide.
