When I'm playing on my MOXF8 using headphones the signal is perfect. No hum or other noice.
When I connect my MOXF to a speaker, i have a EV ZLX12p it start making a 50hz hum noice. The same using my active monitors.
If the speaker is pluggin in to my moxf and the power cord is plugged in and its turned on and i dont have my moxf power up and not connected to the power theres no hum but when I connect it to the wall I start hearing the hum... even if moxf is turned off.
The moxf and my monitors is not using grounded electircs and the ZLX is but I also tryed to lift the ground of the 230 volt 50 hz we have without result.
Also measured if there is some difference between ground and 0 and there is not. I also have a residual-current circuit breaker that will break if there is any failure.
Moxf and speaker are connected to the same power. No other stuff connected. Even tryed to shut down the whole house but I still got the hum...
I have not noticed it on stage befor and not at home either, before now.
The strange thing is that I have it even if the moxf is powered off if the power cord is plugged in but not in the headphones... only speakers.
Does anyone has a clue of where to start seraching and what it is that can be wrong?
The electric is new in the house the last 5 years and heater, hotwather etc is also new... everything on RCCB:s and I have no hum in television, stereo, home cinema sound or else... Only from MOXF. Also have a Roland thats not mailng any hum in speaker and a DGX-660 thats without hum in speaker.
Its strange... What 2 do?