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The dual sub output is not stereo, according to the manual. The manual says this is a 7.1, not 7.2. I read it was stereo and 7.2 on the Best Buy site as well. I use dual Klipsch r12's (large living room) which have L+R input. I am using both sub outputs from the stereo and rca "y's" to the l+r on the subs. If you have a single subwoofer (and single input) you only need one preamp out. I suspect Onkyo provides a dual output for subs with dual input, just a hunch. Check on the Onkyo site for the .pdf manual, if you haven't done so already. Hope that helps.
Sorry, there was a problem. Please try again later.Those are not right and left since Woofers are not stereo. Those are one connection per woofer for a possible total of 2 subwoofers making this receiver 7.2 as it says in the Best Buy product description. I don't know about the manual but the receiver does have 2 subwoofer connections on the back based on the product pictures. If you look at a 5.1 receiver it only has one of those subwoofer connections corresponding to the ".1" of "5.1" versus this one having 2 connections for the ".2" of the "7.2" description.
Sorry, there was a problem. Please try again later.I configured my system as 5. 1. One subwoofer. I connected one output to the the subwoofer input. I think you could drive two subwoofers. But I would consult the manual. I thought the manual and setup wizard was pretty complete. It worked as advertised
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