I moved my system around a little a month ago. Lately, when listnening to music (2 channel) something just didn't seem right, but I couldn't put my finger on it. The speakers just sounded....thin or something. I am pretty good at convincing myself that I need new ****, so had myself convinced that I should go out and buy that HK AVR645 I have been drooling over.
Well, I finally got my TV repaired last week (CRT pins needed cleaned apparently) and so put in my Ovation video and audio calibration DVD. After setting up the TV I thought i would run through the audio setup as well.....Long story short, I had my front towers polarity reversed. I swaped the wires that were backwards and the system sounds completely different. I had no idea that a polarity issue would cause such a dramatic change in sound. Make sure youve got your +'s and -'s right!