I can't say what caused the different sound I heard between my old Yamaha and my present HK, but I feel it has something to do with the fact that the HK has adjustable crossovers, vs the your stuck with it Yamaha. I know that the HK was set at 100 from the factory and it didn't sound much different from my Yamaha. Setting it lower has made quite a difference in perceived sound to my ears. It could be some kind of weird psychological, sonic, placebo effect. Maybe my hearing has simply gotten used to what music should really sound like. This is a totally out in left field stab in the dark.
