So all that being said, is it alright to start-over with taking my first measurement without bothering about calibrating the soundcard? Or have I not understood something?
Jens, u say it's ok to kinda close one-eye to the FR above 3k because it does not matter as much compared to everything else below that range. Well my main purpose of buying the ECM-8000 was thinking that it's much better than the Radio Shack SPL meter I already have (which is again said to be good till about 3k) & had no hassles of using an external preamp for phantom power or whatever..