Originally Posted by justpassedu
i have the single wire going from the sub output on the receiver to either left or right on the sub , both work , only need to use one.
My old Infinity Sub also only has line level inputs (2 RCAs). I always install a splitter (1to2 ... so both RCAs are connected).
Yes max out knob settings on Sub and let Audyssey trim it down. Exception is Volume I usually run at 50-75% but yours might be small. Pick a knob volume and leave it ... let Audyssey pick volume ... just don't let it "bottom-out" . Make sure Audyssey picks Sub Volume level between -12 to +12 or around there.
Run Audyssey now. You can run it again later. Even the Quick (1 position) Setup is better than nothing. It's very accurate and will alert you to any problems.
On my Onkyo 607, years ago ... my total sound didn't seem as clear or bright all of a sudden. After the usual trouble-shooting, I thought I would re-run Audyssey. Surprisingly, it said the Center failed (but obviously the speaker was working). Turns-out the Tweeter driver was blown in my (nice, but old) JBL Center. Installed another tweeter, ran Audyssey (it passed this time), and sound was back to normal.