Hi,

I have to design a ground speaker amplifier circuit. We are told the impedance of the speakers and the base voltage they require and furthermore the voltage source. In the wake of inquiring about I have discovered that the LM386N-4 is a popular choice. As per a datasheet of LM386N-4 - https://www.icrfq.com/part/2377557-LM386N_4.html I've seen many circuit graphs yet what I don't comprehend is the means by which to pick the voltage increase required for the amplifier.


I initially suspected that need to know the information audio signal voltage and when I increased that by the pick up that would need to give the base voltage required by the speakers, however, it gives the idea that what makes a difference in the present which I don't get.


Thank you to everyone for helping me.