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Blow dryer causes audible buzz from power amps in two audio systems...

but only at one speed.  My wife's hair blow dryer causes the amps in both my bedroom system and family room system to audibly buzz.  It only causes the buzz when the blow dryer is on its low fan speed.  Strange.  The bedroom system is close to the master bathroom, where she uses the blow dryer.  But the family room is on the other end of the house and I assume on a completely different circuit.  Now, it does not cause any problem with the audio that the amps are producing.  It is just an audible buzz you can hear coming from the amp. Does this mean there is something wrong with the wiring in my house?  The house was built in 1987.
mtrot
nonoise's avatar
nonoise
10,885 posts
 
The wiring in your house can be the culprit. Somewhere along the way some lines are shared which shouldn't be. In the meantime, may I suggest having your wife, it she's so inclined, go the Sinead O'conner route? 😄

All the best,
Nonoise
Post removed 
petg60
1,486 posts
 
Hi mtrot,
DC is induced in the line, refrigerators, heating elements....hair dryers (especially). Has nothing to do with new or old houses and lines. DC can be picked up even at nearby station and distributed to your house easily. Can only be cured with the addition of DC filtering (i have tried it it works). Apart from buzzing noises more heat is generated also.
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