Did you re-calibrate the receiver trim levels for the speakers and sub? When you did the hard reset all the settings go back to initial factory defaults. In this case the trim levels would all be 0.

My suggestion is to run audyssey if you have not done that already so there is at least some form of setup on distances, bass management, trim levels etc.

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne