In this video explaining how to make an audio amplifier, the narrator warns
Don’t be misled by crappy schematics…with low values like 100 µF. You want to use at least 1000 µF [between the LM386's output and the speaker] to guarantee good bass with a wide variety of speakers.
However, in the circuit that I made following this video's instructions, replacing a 1000 µF cap with one of lower value resulted in no difference in sound quality which was audible to me.
Is the assertion that a capacitor of 1000 µF or higher is necessary true? If so, and if the reason is that given in the video of allowing for "good" bass, how does such a capacitance allow for that? If this is not the reason (or the only reason), what is another?
(I did not test with a wide variety of speakers; are there certain speakers for which the difference between capacitances is more pronounced?)