Thanks for the reply. I do have the sub trim at +10 on the OPPO but the HSU doesn't have a bypass per say for the crossover. It does have a crossover defeat switch which reads: "if you are using a subwoofer of LFE output, you can disengage the crossover by switching it to OUT. The crossover should be switched to IN when using high level inputs or two channel low level inputs." so since I have the bass management on in the 950 this switch should be set to OUT. Correct? Hopefully with this fine info I will get everything up, running and sounding great. I do love this hobby and especially upgrading. thanks again.