Update guys...I hooked up these speakers to my parent's current home theater system in the living room. currently, they have a quintet II system, ksw-12, harman kardon avr 320, monster cables and banana plugs through the system. I removed the quintets and pluged the synergy speakers in. They sound a little bit better, but the biggest differences is stability. They sound smoother then the quintets at higher volumes and also sound more crisp. It's like the speakers don't need to work as hard or something. Very solid and excellent sound, you guys won't be dissapointed.