What is the proper way to calibrate your sound? Do you set your preamp/receiver at a certain -db level then bring your speaker levels up to meet 75db or 85db or whatever you choose? Or do you leave the mains set at 0 and bring the master volume up so that you get a 75db reading and adjust the center and surrounds accordingly? If you use the first method, what is your preamp/receiver setting below reference? Second, what decibel level do you calibrate to? Also, I notice that VE comes with a blue filter to perform the display calibration with but Avia does not.... How does Avia calibrate using the SMPTI (sp?) color pattern?