If not, you need to set the Oppo to have all the main speakers as Large and "no sub."
No Bass with 5-Channel Analog Inputs
I am using the 5.1 analog outputs out my Oppo UDP-205 to connect to a very-old Yamaha RX-V995 that was produced way before HDMI. I'm doing this to take advantage of the superior DAC in the OPPO. I can't seem to get any bass out of the system this way. Using the exterior DAC nullifies all adjustment on the Yamaha. I have all speakers set to "small" in the Oppo's speaker set-up, and I have tried adjusting the cross-over as well. I get plenty of bass when I bypass the OPPO when watching TV. My OPPO BDP-95 did the same thing when I connected it this way. I used to be able to rattle windows when connecting disc spinners through the 2-channel inputs. Does anyone have any ideas on other settings I can adjust on the Oppo to get more bass?