True sibilance is caused because our ears are most sensitive at certain frequencies mainly between 3 and 4 kHz. Many recording studio's use a house curve with a BBC or Gundry dip which drops these frequencies a little to try and prevent sibilance in their recordings. Some recordings without this correction are going to sound harsh on any system. You can stop this entirely by EQing this frequency band down just a dB or two.
I keep such a curve handy in my presets to deal with this problem. Sibilance occurs with instruments and voices that have a lot of energy in this region. Female voices and violins are classic. If your system can make it through an early Ricky Lee Jones recording without slicing your throat you have the problem licked. The problem is if you depress that band too much the music will start to sound... I guess muffled would be the right term. So, there is a trade off.
I keep such a curve handy in my presets to deal with this problem. Sibilance occurs with instruments and voices that have a lot of energy in this region. Female voices and violins are classic. If your system can make it through an early Ricky Lee Jones recording without slicing your throat you have the problem licked. The problem is if you depress that band too much the music will start to sound... I guess muffled would be the right term. So, there is a trade off.