Regarding calibration, just purchased Ovation's home theater set up dvd. The test signals for the three front channels match the 950's test tone, but are significantly different for the surrounds and backs. The 950's test tones are higher for the surrounds and back than the Ovation's. So which do you recommend I use, the settings based on the Ovation dvd or the 950's test tones? Gotta know, just can't stop tweaking.