This is my fist time at the saloon. I purchased a 990 this past December. I have been very happy with the product. Previously owned Fosgate 3 and 4, Citation 7 and 5. Speakers are the original MC220 LCR and SD-180 surrounds. In regards to calibration. I agree with gonk. My personally preference is to heaar the intent of the surround mixes. I have found when you are combining both movie and and music systems together in most cases you get better overall performance with equall response to all speakers. Listen to acoustic string bass. A solo bass should be centered. With a properly calibrated system the performer will appeared centered. When your surrounds are jacked too high the center image will appear stretched. But again it is a hobby and everybody has different taste. Nice meeting everybody.