I have build this circuit succesfully but I need more volume. This is an audio chip with animal sounds.
I tried to remove the transistor and connect the out pin to a class d amplifier breakout. I get only a very low volume then.
My idea is to amplify the sound first with the S8050 transistor, and then connect to the amplifier. When I remove the speaker from the circuit from the spec sheet I need to replace that with a load resistor. I have however no idea which value to pick. The output will then be between the load resistor and the transistor (right?)
I use a 8 ohm speaker.