Hey Guys,
I am trying to amplify an audio signal from a birthday card audio player (A96020) with a LM386N, and all I have been getting is noise, it wont actually play the recording it just plays noise. I think the problem is that I need a pre-amp, if so, I would like to know how to go about building one. Thanks
Hey Guys, I figured out what what was wrong. I had the output wires from the sound recorder going into what was suppose to be a ground terminal. I got it working but the sound quality is terrible. Any tips on getting the sound better (less static)
Assuming you no longer have a loudspeaker directly connected to the sound module, wire a resistor, I suggest 47Ω where the loudspeaker used to connect to (where you are now taking sound to the LM386 from).
The reason: Without it's original load, the sound module may be misbehaving.
The gain of LM386 will be increased if a 1Mfd capacitor is connected between Pin 1 and 8. You may first try removing it and then try to play. IF you still have noise, try droping the signal level using a volume control in between the card player an dthe amplifier.