I got some LM4562 op-amps a few months ago and finally had time to test my audio project, and I realized that this schematic based on some others on the network is not working.
I tried to listen to the amplified audio coming from the smartphone on the 3 W, 4 Ω speaker, but I didn't hear the music; it just pushed the membrane.
What am I missing?
I have read and tried to fix my mistakes, but it still doesn't work. I am starting to believe that although it says "L4562MA" on the IC, it's not an op-amp.
I also tried with a 560 Ω resistor after the output's cap.
I have made it work with the following schematic, but sadly the distortion is very disgusting.
I mark the answer as the correct one because in my question I just did want to make it work for a test, I wasn't looking for a definitive result as I had experience before with another op amp and I got also distortion; but I couldn't decide to use biasing because I was following the schematics on the internet, to make a minimum working schematic.