When I first received the 990, the auto-calibration didn't work, giving me large setting for my surround and small for my front pairs along with very wacky subwoofer setting. Last night I gave another try on auto-calibration (wife rearranged the furnitures) and it did wonderfully this time. When I checked manually the setting was almost identical. So give it another try if you weren't successful before, yours might work just like mine.