[Wayne A. Pflughaupt]

Hi Mike,

Twelve filters - as you can see, REW wants to filter your graph to death. Not a good tact, in the experience of many people here.

The graph showed (sub only, axis and target line set with 1/3 smoothing per Wayne's recomendation) reports no peaks found when I select the find peaks option.

Can this be correct? Would you add some gain filters around where the graph dips a little?

Take another look at your first graph - the reason REW didn’t find any peaks is because your response plot isbelow the Target Curve. REW does not look for peaks below the Target Curve.

You’ll need to realign the Target Curve so that it’s a good midway point between your peaks and valleys (75 dB looks too low, based on your second graph). As noted, REW won’t do anything about what’s below the Target, so you’ll need to use some manual boosted filters to address what’s below the Target. In the “A few examples” heading of the Minimal EQ article (right below the one you highlighted in the quote box) I show that you can do some manual tweaking of the filters REW recommends to eliminate and/or re-adjust any notch filters or useless filters.

Double check your smoothing setting – it looks like way more than 1/3-octave. You might need to bump it up to 1/6-octave if indeed it was 1/3-octave before.

The window (20-130 dB vs. 45-105 dB) has no effect on REW’s automatic equalizing; that is merely for your benefit when you’re manually equalizing, so that the response doesn’t look as scary and compel you to over-equalize (I think I need to clarify that in that section of the article). As brucek noted, be sure and switch back to the 45-105 dB window before posting graphs here.

Regards,
Wayne