1st time user, not getting it right, need some help

[ronsonrocks]

Hello, I'm a first time user of REW and my first attempt at creating sound card calibration has seemed to have failed... I setup a loopback, balanced line out to balanced line in. Input and Output seem to register fine, but the data collected has got to be wrong and I'm not sure why. This is an Apollo x4 interface with a solid/tested balanced cable.

Any help as to what I'm missing here would be appreciated!

Thanks

Ronson

 

[ronsonrocks]

Figure it out! Computer output was routed through console virtual channels. When I undid that it looks proper. Interested to know how routing it through those virtual channels changed things so drastically. Maybe it was some kind of digital feedback loop, delay or doubling of signal?

 

[John Mulcahy]

Maybe, though the measurement looks more like noise than signal.