... Calibrating your HDTV doesn't have to cost as much as the TV itself. A calibration disc is a thrifty way to get professional-grade results for less. What's a calibration disc? It's a disc that holds information for tweaking your HDTV's color and brightness levels. You don't have to buy a calibration disc, though - you can make your own with a free download from AVS. Not only is it free, it comes with a support staff in AVS's knowledgeable forum ...