I would recommend anyone using Inguz/DRC to use REW to check just what is going on. I had a lot of problems getting ImpulsePrep to produce a good impulse response, due it turns out to a bug (now fixed) in ImpulsePrep - but I could only tell a bad impulse response from a good one by using REW. As an example, attached is a graph of my freq response (brown before, blue after, and light blue predicted TestConvolution), using extreme EQ. You can see the big difference made at 40Hz, but curious how some big troughs have appeared (at 60 and 700 Hz).
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