Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
how can a speaker give off sound when it is unplugged?
We have these speakers that give off sound when unplugged. It sounds like a voice or something like that. its not spooky in any sense just odd. To me, it kind of sounds like walkie-talkie communications
1 Answer
- spacemissingLv 74 years agoFavorite Answer
Speakers often do that, but usually only when connected to amplifiers.
The amplifier's output devices act as rectifiers and make a crude version of a "crystal radio".
The signals come from nearby radio transmissions, which could be either CB or amateur.
You might be able to reduce or eliminate it by directly shorting the input terminals,
but don't forget to remove the short before connecting the speakers to use them!
