Why do speakers make that hissing sound?
In: 10
Even the best-shielded cables are antennas. Random EM waves (radio, microwaves, cell phones, TV signals, satellite signals…) literally induce teensy tiny amounts of current in the cable, and the speakers just turn what current comes through the cable into sound anyway.
It’s the same as TV snow or radio static only much less because the cable is shielded and you’re not tuning to and amplifying a specific frequency
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