well after continued searching and reading posts by many of you I think I finally understand. (your last post helped clear away the bass management fog). So I've set my speakers to large in the BDP-83 and set the trims to zero, except for +10 for the sub, which is on and will redo the distances in the 83 and I have the bass management switch in the up position. I didn't understand the nature of what the 950 did as far as applying bass management with the multichannel analogs. hopefully, I've seen the light, if not I'm sure you all will set me straight. but boy does this thing sound great. played the opening scene of Quantum of Solace and wow.