I just hooked up my 520. I've heard great things about the 520 for 2 speaker music. Mine has too much bass. I have my powered sub crossover turned all the way up. My OSD doesn't let me choose anything for the front speakers. The only thing I can change is Sub none or Sub (L+R) with crossovers of either 40Hz or 60Hz. Also a little too much bass watching dish TV. Currently have sub at 80Hz crossover. 100Hz should make it worse, right? Guess I could turn the bass knob on the receiver down. Or maybe turn volume on sub down. Any suggestions?