I just ordered last night so i havent even recived it yet....It was hard to do it but its WORTH it. I will let you all know.
There is another gig called claudio negro(no racism it is what it is called) that is used to measure frequency response and is even simpler, you just need a mic and the SW software. I havent done it but it would be great!
When i get my wt2 in the mail i am going to measure a bunch of my subs lol.