Problem is that we are using a lm386 for amplify the signal we are using the same circuit(200 gain)that is given in the datasheet. but we are not finding the extra loud. we are using Load (speaker 50ohm, 0.25w.).
My input 1.5v Ac frequency= different melodies frequencies like 200hz, 100HZ signal coming from the module . Please suggest me how to amplfy . please send me its schematic so that i will complete our project.