Now I have my sub set up properly and reaching down to 30 Hz, I do hear an occasional double thump when switching inputs.
In fact, my thump has nothing to do with DD but has to do with switching to a digital level (coax or optical) which is three times as load as the analog inputs.
Does any of you know a way of reducing the output levels of both my set top box (optical) and my DVD player (coaxial)?
I don't think you guys' popping issue has anything to do with the 7700, I would say it's inside the 990.
Many processors have a built-in delay when switching inputs, I guess for depopping...