Mains noise remover - any suggestions?

ToneControl

I have finally discovered the source of the buzzing that sometimes appears through my studio monitors

It's the hygrostat-controlled humidifiers that I use to keep my guitars happy

How can I stop the humidifiers injecting noise into the mains?

Or is it cheaper to filter the power into my studio gear?

ICBM

Turn the humidifiers off when you’re using the monitors...

TheMarlin

These are great. https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F352591078076

Whistler

The usual approach is to have audio on a dedicated power supply in a studio and other machinery on another. Is there a spare supply on your fuseboard?

ToneControl

Whistler said:

The usual approach is to have audio on a dedicated power supply in a studio and other machinery on another. Is there a spare supply on your fuseboard?

probably, but too far across the house to do cheaply

ToneControl

ICBM said:

Turn the humidifiers off when you’re using the monitors...

I leave them on all the time, very annoying to get random buzzing

ICBM

ToneControl said:

I leave them on all the time, very annoying to get random buzzing

I understand that, but why not just turn them off when you're using the monitors? It's not as if humidifiers need to be run continuously - especially not somewhere like the UK... not even this weekend.

mart

Put them on a timer so they only come on overnight or something, so they’re guaranteed to be off when you’re playing.

Grunfeld

Out of desperation I tried a Behringer hum canceller.

Worked.  100%. 

I've no idea how it works and I actually had to take it out and put it back just to check that the hum was still there without it.  It was.  I didn't think a punt of less than £20 would do anything but it totally fixed the problem at absolutely no cost of audio quality.  Sharing the info in case it helps.

ToneControl

Grunfeld said:

Out of desperation I tried a Behringer hum canceller.

Worked.  100%. 

I've no idea how it works and I actually had to take it out and put it back just to check that the hum was still there without it.  It was.  I didn't think a punt of less than £20 would do anything but it totally fixed the problem at absolutely no cost of audio quality.  Sharing the info in case it helps.

I have one of those, which worked for the purpose I had it for

These monitors are self-powered Focal monitors, and have balanced XLR line inputs, so that approach is not needed, this hum is from the power amps in the speakers, even with the input mixer switched off, and even with the XLR plugs disconnected from the speaker inputs

ToneControl

mart said:

Put them on a timer so they only come on overnight or something, so they’re guaranteed to be off when you’re playing.

could do, but it would defeat my plan of keeping humidity constant all day. It does vary over the day quite a lot in the winter

ToneControl

ICBM said:

ToneControl said:

I leave them on all the time, very annoying to get random buzzing

I understand that, but why not just turn them off when you're using the monitors? It's not as if humidifiers need to be run continuously - especially not somewhere like the UK... not even this weekend.

I use them as my main hifi and PC monitors too

Reverend

If you didn't buy bamboo cable lifters then it's your own fault. 
I know where you can get some at a very reasonable price.