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So I never ran across this before. IMO, this latest PicoNeo build sounds a bit hot in the treble so I took some close-up measurements and got this.
Never had to notch something without a crossover before and when I tried to use a shunt notch for the 6k peak, it did absolutely nothing to the freq response. Had to use a series notch. Also having a heck of a time trying to tame that 6k peak and lower the 1.7k hump just a tad.
So why does a shunt notch have no affect?