Non powered mics > soundcard for FR testing?

[nonsub]

I'd like to use RoomEQWizzard to check the responses on my speakers (and use my DCX for some correction) but I'd prefer not to have to go and buy something like a fasstrack to support a powered mic.Does anyone have any suggestions or I am simply not going to get accurate enough results without going this way? Maybe a USB condensor mic? Thanks!

 

[nonsub]

I think since I will probably get a calibrated ECM8000 to go with autoeq on DCX2496 my best bet may just be to add M-Audio MobilePre.

 

[fzaad]

it needs*little more information on your system. like your signal path. measuring frequenzy response is pretty expensive. I mean it will cost you total 1.50€ to make a mic that measure it.