hi, im struggling to understand how this circuit works. can anyone help me? it will looks more clear it you put some block diagram and relate the diagram with the schematic. i have googled for hours, days trying to know how this circuit works, but no site like answer my question. most of the site only put information on which value of resistor, capacitor that will give you good sound, how you going to do the pcb bla. bla. bla.. i dont want to know that. i want to know how they operate..pls...pls...someone help me please...and one more question, what is 10.7/150 and 10.7/disc, i never happen to see any symbol like that before?