hello i took a picture from Google please see the attachment At point 'A' does voltage division takes place??so it means the mic is acting like a variable resistance am i right?? and i couldn't understand the square box area circuit ok after the R6 resistor we get an AC amplified signal and R7 and R8 are for biasing the Q2 transistor.now if C4 cap is used then wouldn't it ground the AC signal??? after that all the inductance,variable cap i don't get it :-( !!!!! please help me!