I recently hooked up an Onkyo TX-SR605 receiver hooked up to five speakers and a subwoofer. (The speakers and subwoofer are also Onkyo from an older HTIB system: skc-100, skf-100, skm-100, skw-100, etc.) Sources are a Panasonic BD-10A, Toshiba HD-A3, and older Sony DVD/VCR combo. I hooked the...