microelectronics circuit design BJT transistor

First, Power supply's voltage (Vcc) is 12V

second, input signal generated by microphone's peak voltage is 10mV , 20Hz - 2KHz

third, microphone's output impedance is 10000ohm ( 10Kohm )

fourth, Speaker's resistance is 8 ohm

fifth, the peak current in speaker is 0.16A

sixth, the of the transistors used is 100. the of the BJT transistor used in the output stage is 50.

microphone -> butter amplifier ( Emitter follower ) -> gain ( use 2 CE stage that cascade ) -> butter amplifier ( Emitter follower ) -> speaker

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