I have a range of 50-150hz for the high cut on my Yamaha subwoofer... In the sub manual it recommends setting the high cut to the mains speakers (aka front speakers, right???) minimum reproducile frequency... It says this frequency can be found in the speakers catalog or owners manual... Well I found the manual for my two front speakers left/right but am uncertain on the differences in Hz its lists... For example my Sony speakers are rated as follows... Frequency range = 60Hz - 20,000 Hz Cross over frequency = 3000 Hz So in the case do I set my hz on the high cut to 60???