Ok I have the PB-4000, love the way it looks. Now the PB400O is in front and Klipsch R-115 in back. I went through all the app settings keeping everything off. I use the LFE input, I ran YPAO on the RX-Z9 for distance, and level only... First impressions I was not impressed at all. I figured out that frequencies were being canceled.
The SVS is in standard mode, no eq being used. So finally, I decided to change Phase on the fly. In the Z9 I can do that. Normal, L reverse, R-reverse or both reverse. L Reverse it woke right up!! Wow even at low volume it sounds amazing. I have more testing to do but even at really low volume it sounds AWESOME I will let you know about movies here soon!