In the worse quality TV, putting the composite video into an audio line would make the speakers do a short distorted buzz, then cutoff. The higher quality TVs won’t even flinch. Their internal processing was fast enough to detect the wrong thing was connected, that the signal modulation never even made it to the amplifier. But to our ears it was probably just a bunch of electronic farts.
In the worse quality TV, putting the composite video into an audio line would make the speakers do a short distorted buzz, then cutoff. The higher quality TVs won’t even flinch. Their internal processing was fast enough to detect the wrong thing was connected, that the signal modulation never even made it to the amplifier. But to our ears it was probably just a bunch of electronic farts.