I recently purchased an extra set of speaker wires for my front speakers, along with some banana plugs. I have hooked them all up bi-wired. Maybe its just me, but I think maybe the bass is not as good as it was before I bi-wired and switched to banana plugs. I might try it non-bi-wired and compare. It could be just me, as my subwoofer doesn't sound so good in my room lately either. Maybe it's the receiver somehow?