The graph above is a raw array without any EQ, it doesn't sound that good, too much low mid and no bass.
Yes I use DRC-FIR amongst other EQ and processing. DRC allows me to adjust the window length by frequency band so there is relatively longer windows in the bass and treble than in the midrange. The automatic correction is set to flat and comes out something like this.
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Then an IIR EQ is used to set the tonal balance. I use a cascade of shelving filters so they can all be adjusted individually to get the desired effect. I have used target responses in DRC to have it all in one filter but it isn't quite as good somehow. You can get an idea of the amount of processing from the tick boxes to the left.
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I have mine free standing and not in the corners. I can understand the idea behind the corner position but it forces compromises I don't want to make. You can see the corner and first reflection absorbers in the image I posted on the first page. Even without any absorbers the spread of drivers in height creates an averaging effect so with some EQ to take down the worst modal peaks the bass can be very even.