Not sure what you mean but I will read up and see how to setup the mic. If I use my Audix mic it looks the same only the SPL is accurate. I am really having a hard time understanding how a high spl "more sensitive mic" would cause an inaccurate measurement.

I was just wondering what might cause my dip at 140 and that happens not matter which mike or software I use. I was also wondering how to track it down.
Matt