AudioTester 2.2 Calibration

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Hi!

I have the AudioTester 2.2 and after a couple of hour I could make some impedance and TS parameter measurements.
Every thing is fine and the results was very near to a reference professional made measurement.
But! I am not 100% sure that I understand well the calibration process.
Could somebody help me and to tell me what and where I need to adjust?
In the manual it is a bit "dim" where and which pot I need to adjust in the windows mixer. Play or record mixer? Master volume or input line volume etc.
I use SB LIVE 5.1 sound card and it can drive the speaker very well.
Now I have 549mV output voltage and full open input volume.
One more question: what is the best value for the serial resistor?
10 or 33 Ohm?? Now I use 21 Ohm......


Greets:

Tyimo
 
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