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Can moving wire location at circuit breaker reduce hum?

The power line going into my music room will oftentimes make the amps’ transformers hum.  I’ve tried many things but have had no luck.  If I take any component that’s humming into a different room run on a different circuit breaker, the hum disappears.

Would swapping out the wires that go into the two separate rooms at the breaker make any difference?  Or is it more likely that one of the outlets on the circuit that goes into my music room is somehow miswired and is causing the hum?  I can unplug everything from the circuit except for my amp and it still hums.

Any suggestions on what I might be able to do short of hiring someone to run a dedicated line?

Thanks,

Mamoru

 

128x128audiodwebe
erik_squires
15,824 posts
 

So I just looked online at a couple of DC blockers.  You have to be careful as the two I found were rated for 7 A or less.  If you are using monoblocks I am going to guess you are going to easily exceed this. 

My recommendation that you need to have your power evaluated by a pro stands no matter what.

twoleftears's avatar
twoleftears
5,313 posts
 

If you really need a DC blocker, Audio by Van Alstine has a good one, and they allow returns.

audiodwebe's avatar
audiodwebe OP
212 posts
 

The current culprit is a Marsh amp.  Lights but no dimmer switch.  The house was build in 2001 but I upgraded the receptacle with one of the audiophile-approved  Randy’s about a year back.

I’ve always had a problem with this room and initially thought all my gear was going bad until one day, on a whim, tried a component in another room.

One of my daughter’s friends is an electrician.  I’ll probably have him look into it.

Thanks, all.

Cheers,

Mamoru

erik_squires
15,824 posts
 

OP:  I encourage you to replace all upstream outlets if they use backstabbed connections. Again, not suggesting you spend a lot, $4/$5 per outlet for new, commercial grade/tamper resistant.

jb1
96 posts
 

I installed a cooktop about 3 years ago and it became nightmare of noise in my REL subs. At first, I had no idea what was making my subs hum. It wasn't a ground loop. I sent them to Pyramid Audio and they found no problem. I have 4 dedicated lines & a Furman Ref IT15 and they did nothing to silent the humming. After much research, I determined it was a DC issue caused by the cooktop. I purchased 2 Emotiva DC blockers & no noise

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