Be sure to leave all speakers on the universal player (or whatever player you get) set to LARGE and sub to YES (turning its bass management circuitry to OFF).

Then switch the toggle on the back of the 950 to ON and use the built in 80 Hz analog crossover.

If you leave it OFF and use the player's bass management you will get double bass routed to the sub due to a screw up in the 5.1 analog input's bass management design.

Dan