Ok this is my curve in according of your set-up mic at 1.5 m
impulse tone, rectangle weignt window... etc, the pict contain all indication mesure...
the notch of 8k is the result of bad cutting network...
normally is cut at 9.5K but at 7k the hf is full here and UHF is full here too soo the cummulative is little over 4.7 DB... but impossible to redure this notch with-out loos the rest of sprectrum of UHF... sic !!! this is another reason I build a new network...
Jean.
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