MrSaxobeat wrote:2.) Especially input 1 but also input 2 (because it’s close to input 1 ?) are sensitive to crosstalk/stray pickup (I’m not sure if this is the right term, I’m german).
When I touch the housing in the upper left corner I hear hum in the headphones. This gets very strong when I touch the screws of the XLR connector.
Strehngth of the hum depends on the setting (Hi-Z or normal) and on the gain setting. Similar effect on input 2 bbut not as strong. The other inputs are not sensitive in that respect.
I guess this could be normal for Hi-Z input ? Are these just more sensitive than other inputs ?
3.) I had a bass guitar attached tot he Hi-Z input and this thing is humming (except you turn Gain down to zero).
I guess this is pretty much normal to abass guitar ?
MrSaxobeat wrote:3.) I had a bass guitar attached to the Hi-Z input and it hums (unless you turn Gain down to zero). I guess this is pretty much normal for a bass guitar ?
MrSaxobeat wrote:4.) My Midi-Keyboard (Kawai ES6) has a slight humming on the line outputs.
It sounds like some crosstalk of the digital electronics part of the keyboard. I don’t think there is much I can do here
electrochrisso wrote: the safest way to do this is to drive a copper rod/pipe (longer the better) into the ground and run a wire from this to the ground of the audio gear (the outside part of one of the plugs). You can get better grounding by wetting the area around the rod/pipe.
Sorry ElectroChrisso - Only posting because I know the "buried rod" thing could be against regulations.
- You could potentially introduce another ground loop but this time for the mains (for UK/Europe).
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