Maybe the HD800 SAA mod wasn't BS after all. More in a sec
Removing the metal ring gets nearly completely rid of resonances between 6k and 10kHz. Now removing the other one.
You can now tell Sennheiser: "Ich kann es besser."
Just as an update: The original metal rings may not be ideal but I'm not sure if no ring is very good either. I wonder if the extended baffle has to do with the peaks (and dips) in the high frequency region. My plate coupler doesn't show the differences as clearly.
I also don't have the SBAF absorber material yet so what is the best now may not be the best later on.
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