So basically what you're saying is that if using the 2ch RCA out from the Oppo to the 990, the 990 can be in Bypass mode to bypass its A/D/A and the internal bass management crossover. But the 990's 7.1 input can't be placed in bypass mode, and therefor can't bypass the A/D/A and internal crossover?
Yes, the two-channel analog input has a bypass mode that provides a complete analog signal path through the Model 990. No, the 7.1 direct input does not offer that bypass mode. If you use the 7.1 direct input, the only way to defeat bass management is to set all speakers to "large" in the Model 990 setup menu - thus disabling bass management for all inputs.
What I was thinking was to just use the Option 2 that I listed earlier, and have the Oppo's 2ch stereo + center, surrounds, and sub sent to the 990's 7.1 input. Use the bypass mode on the 990 and do all the crossovers on the Oppo. But if the 990 can't do bypass with its 7.1 input, then I'd have to let the 990 do the crossovers instead of the Oppo.
Correct, when using the 7.1 analog connection to the 990, you will need to rely on the 990's bass management unless you disable bass management for all of the 990's inputs.
After thinking about this some today, if I had the Oppo's 2ch stereo RCA out connected to the 990's CD RCA inputs, and had the 990 in Bypass mode, would it still get a sub signal from the Oppo and direct it to the sub?
I had to double-check
this page (
this diagram from the firmware update portion of my
990 review contains the same data). If the fronts are set to "small" the sub will get a signal when in bypass mode with a stereo input.
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