Just deleted post, after I caught it. Unless the room has changed, sub position, etc I'm not sure because the marantz has plenty of voltage to drive the sub. Audyessey can be tricky to get right. I'd just focus the setup again as that's your likely culprit. Did you download the Audyessey editor app?\n\nNo worries.\n\nI just ran the setup again a few days ago to no avail. I have disabled Audyssey as it has been nothing but trouble for me. I am running the AVR in Direct mode. I tried the editor app a few months ago and ran Audyssey calibration via the app but that did nothing either. I even tried editing the sub EQ curve in Audyssey using the app to try and add more mid bass back, but that didn't help and frankly I shouldn't have to resort to such trickery to get this sounding right anyway.