It's most probably the speakers and room-reflections related.
I have spent a lot of money on these (bogus) cables/filters products and they don't help on the long run.
At first you imagine it is better but then the sibilance is back.
I solved mine with the digital room correction and a few absorbers, I had a peak from 4 to 10khz when checking the measurements.
I have spent a lot of money on these (bogus) cables/filters products and they don't help on the long run.
At first you imagine it is better but then the sibilance is back.
I solved mine with the digital room correction and a few absorbers, I had a peak from 4 to 10khz when checking the measurements.