Volume is much better, the level was always around 60-65 (adjusted manually to not go above the marks) and the device was not directly faced to the soundhole (did read somewhere not to do so). The distance was only 20cm (i think this was the main failure).
Now turned up to level 80 and placed it about 40cm away facing directly to the soundhole (position is a bit lower), sounds much better. I think i made everything the opposite way
Now i hear much more failures
Still not ready for posting any recording, now its a matter of training