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whenever i put my electric heater on "med", my amp starts rumbling.

with the guitar just sitting there? sounds like noise on the lines, noise usually rumbles in speakers

edit: titan, how can you make a pic of sound? 😉
 
Originally posted by: destrekor
with the guitar just sitting there? sounds like noise on the lines, noise usually rumbles in speakers

edit: titan, how can you make a pic of sound? 😉
Click to expand...

sorry, not a guitar amp, just a receiver. and you can't hear it, you put your hand on the amp and you can feel it buzzing. the heater can be in the other room... if it's off or on "high" then it doesn't do this
 
Are any ground lugs clipped off? You know, the third lug on an AC plug? Is this a house or apartment? Try moving the heater to a circuit on the other leg of the main AC.
It's most likely a harmonic caused by the resistive temp control element coming back up a leg of AC.
Is there a fan that switches on with this function. May be a suspect also.
 
Originally posted by: Pepsi90919
there are no fans in the amp. there is a fan in the heater. there is no third prong on either. it is an apartment.
Click to expand...

There's the problem. The ungrounded heater fan is probably brushed, at that certain speed (med), the brushes are creating back-EMF that is being fed back into the main AC power. I'd say try another circuit, or buy a new(grounded) heater if you can, that EMF is going to all devices on that circuit(like your PC) and can ruin the lifespan.

 
Originally posted by: TitanDiddly
Originally posted by: Pepsi90919
there are no fans in the amp. there is a fan in the heater. there is no third prong on either. it is an apartment.
Click to expand...

There's the problem. The ungrounded heater fan is probably brushed, at that certain speed (med), the brushes are creating back-EMF that is being fed back into the main AC power. I'd say try another circuit, or buy a new(grounded) heater if you can, that EMF is going to all devices on that circuit(like your PC) and can ruin the lifespan.
Click to expand...
There you go. No one likes Eddy Current.

 
Originally posted by: AlienCraft
Originally posted by: TitanDiddly
Originally posted by: Pepsi90919
there are no fans in the amp. there is a fan in the heater. there is no third prong on either. it is an apartment.
Click to expand...

There's the problem. The ungrounded heater fan is probably brushed, at that certain speed (med), the brushes are creating back-EMF that is being fed back into the main AC power. I'd say try another circuit, or buy a new(grounded) heater if you can, that EMF is going to all devices on that circuit(like your PC) and can ruin the lifespan.
Click to expand...
There you go. No one likes Eddy Current.
Click to expand...

Who is Eddy Current? 😕
 
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