Running the following: 5.1 with a Yamaha RX-V385, the mains are Polk T-50’s, center channel is a Klipsch R-52C, sub is a Klipsch R-100SW. This all set up in the living room, 4K TV over fireplace, mains one either side, a perfect triangle with about 12’ from LCR. As I stated it’s pretty modest and I don’t expect it to shake the room, but some movies sound really great, bass and all, other movies the bass kinda lacks. I have read tons of very helpful articles here which helped me improve performance tremendously and overall am happy. Is it how the movie was made, if one movie sounds great and another lacks and no settings have changed it seams logical to me. Do I just need to tweak the bass settings depending on performance?.