Ah ok
I have turned them off now.
But I tried to measure it all from scratch now, and when I was about to calibrate the soundcard, with the loop connected, having the output/input device and output/input set to default, I didn't get any reading on the input bar on the right in the settings window... I experienced this before, but I just tried using other settings than default device input/output etc. and I got input reading, if I then tried setting it back to default, I got a reading again..
I must be doing something wrong somewhere..