It would be way easier to just, you know, eavesdrop with the actual microphone instead?
Although it is a cool experiment and POC. A few years ago I took apart 5 HDD's to see if I could make a usable speaker (as a desk/novelty thing). 2 of them worked, one of them worked with decent fidelity. Three failed (probably my fault). The one that worked was a literally massive double-5.25" Maxtor.
Although it is a cool experiment and POC. A few years ago I took apart 5 HDD's to see if I could make a usable speaker (as a desk/novelty thing). 2 of them worked, one of them worked with decent fidelity. Three failed (probably my fault). The one that worked was a literally massive double-5.25" Maxtor.