Hi! I have set my speakers to small and crossover to 60hz. Yet still when i play music from my computer on youtube. The main speakers also does the heavy work of hitting very low notes like 20hz. I use Wharfedale 220 mains and svs pb-1000 subwoofer. Its really annoying when listening to bass heavy music when my mains start to fart and im WTH! They shouldnt even play that low, because the crossover is set to 60hz. How is this possible?? My computer is connected with hdmi to the receiver.