Wow - I just can't seem to figure out what's going on.

First question: Upsample mode on a DVD will upsample the L/R channels in Dolby Digital, correct?

Second question: On the 990, I tried calibrating the sub under 4 different inputs....

1) CD - Upsample - OPT 1
2) Video 1 - PL II Movie - COA 1
3) Video 2 - Stereo
4) DVD - Upsample - OPT 2

On my B&K, the calibration signal from the speakers was not controllable with the volume and didn't matter what source you were in.

On the 990 in the 4 scenarios above, the "Channel Calibrate" for subwoofer only affected (2) when I had the input set for PL II Movie. It did nothing for Stereo or Upsample. Since I can't calibrate the Stereo or Upsample, the sub calibration tone is worthless - whatever my PL II is calibrated for, the Stereo and Upsample will be + or - the dB that the sub Channel Calibrate is set for.

SVS recommends that I set my first sub for 1/3 on the volume knob and set the sub Channel Calibrate for 1/3 from the bottom - which in this case would be -10. Ron Stimpson from SVS says that this "...keeps the distortion to the sub amps low." I am then supposed to equalize that first sub to 75dB to match with the mains. Then I turn on the second sub and tweak the volume on it until I get +6db (twice as loud as the first sub). I like running the combined output +6dB hot so that's perfect.

The problem is that if my subs in the PL II mode (the only one that the Channel Calibrate works with) are at 81dB on the SPL with the Channel Calibrate at -10db then when I switch to Stereo or Upsample mode they will be 10dB hotter than 81dB and actually at 91dB!

So what I'm getting at here is that any input in Stereo or Upsample mode needs to have its sub SPL calibrated by the volume knobs on the sub amp because it can't be adjusted by the Channel Calibration on the 990.

Am I missing something here?