Speakers are supposed to make noises. That's what they're for.
I made it but it still makes noises.
I made it but the speaker makes noises
I have 47nF, will it work ?
I think I got it but I dont habe 1.5nF, I have 47nF. Will it work ?
But that won't do much with a simple switching-transistor circuit. You'd need a regular-linear amplifier.