Why are the speakers buzzing?

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maaGames2014-12-04 20:12:16

Audio

maaGames, 2014-12-04 20:12:16

Why do the speakers periodically buzz and crackle and squeak? In "Castle" they found a spy bug on such a cod, but I noticed such interference before receiving an SMS or a call. And, the noise appears even when the signal cable is disconnected, the volume is turned to zero and the wire to the second speaker is disconnected. PSU is built into the column, of course. Speakers of average quality / price, 40 watts. Connected via an uninterruptible power supply plugged into an expensive pilot. In theory, the noise in the wiring should be extinguished, but they are. I do not understand. Is there any solution without soldering the circuits and buying other speakers (how do you know that they are not buzzing if they are buzzing a couple of times a week and they may not buzz in the store)?

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3 answer(s)

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Maxim, 2014-12-04
@pudovMaxim

Move your phone, 3G modem, WiFi router away from the speakers

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Alexander Bushmakin, 2014-12-04
@Nixar

The amplifier in the speakers is not shielded. Your phone sends out a fairly strong signal when searching for a network and establishing a connection (SMS, calls). The correct solution would be to use a soldering iron, double-sided tape and aluminum foil to shield the amplifier. But if you don’t want to solder anything at all, you can just glue the amplifier circuit in the speaker with foil, or the speaker case itself :)

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maaGames, 2014-12-04
@maaGames

Another change in volume affects the level of interference. The odd ones are louder than the even ones. Maybe it's the "numbers" that are phoning?