Recent content by squasher

Thanks for the suggestion. Unfortunately, I tried that and all the harmonics that are captured tend to overwhelm the analysis of the fundamental frequency that I'm trying to adjust for. What I'm looking for is something that looks like the following image:

Is there anyway that REW can measure the SPL/frequency response for an externally generated signal? i.e. REW is not the Signal Generator.. I am using REW to determine the Frequency response of my Reel-to-Reel playback amplifier and try to adjust the HF / LF Equalization to get a flat response...