I have finished my amplifier using the LA4597 chip following the schematic below. So far everything's working fine.
However, I noticed something. Some songs crackle the speakers (probably because of their frequencies). But if I disconnect one speaker, the crackling sounds disappear on the other. I tested it to both of the speakers to check if one of them is blown or damaged but nope, both speakers sounded clean whenever the other one is disconnected. Btw, the volume was the same on every test that I did.
What is happening? Can this be resolved?