Quote:
|
But my sub starts humming if I turn on my spl meter
|
This would indicate that the cable ground is bad. Are you using an RCA type connector at the meter and a 1/8" stereo phono connector at the soundcard with a proper shielded coaxial type cable between?
Quote:
|
I also have trouble calibrating the soundcard. If I measure and the sweeping sound comes it only measures about -78db fs. But almost whole my house depresurizes from the sweeping sound. is that to load or to quit?
|
When you do a soundcard calibration there should be no sound at all, since it involves hooking a single stereo jumper cable from line-out to line-in of the soundcard. Where is the 'sweeping' sound coming from?
brucek