I had that problem before..and in my expereience, there are so many things can contribute to that sibilance problem. Here are the few things you can do:
1. Check anti-skating: if the sibilance occurs on the left channel, try to reduce anti-skating and vice-versa.
2. If the sibilance occurs on both channel, increase the VTF to the manufacture's max recommendation. If it's still there, maybe the disc you are playing exceeds the cartridge's ability to resolve the signal from the groove.
3. Get a cartridge that is more resolving or track better/ or match better with your tonearm (fine line contact with very very small stylus tip like Audio Technica, Lyra..etc tracks very well)
4. Could be the defective disks. As Dgordonl said..many female vocal recording issued by Classic records exhibit this problem. All but extremely fine line contact stylus cannot track this cleanly no matter how good your setup/alignment is.
5. Also recheck your alignment . This could help reduce it.
Good luck.
1. Check anti-skating: if the sibilance occurs on the left channel, try to reduce anti-skating and vice-versa.
2. If the sibilance occurs on both channel, increase the VTF to the manufacture's max recommendation. If it's still there, maybe the disc you are playing exceeds the cartridge's ability to resolve the signal from the groove.
3. Get a cartridge that is more resolving or track better/ or match better with your tonearm (fine line contact with very very small stylus tip like Audio Technica, Lyra..etc tracks very well)
4. Could be the defective disks. As Dgordonl said..many female vocal recording issued by Classic records exhibit this problem. All but extremely fine line contact stylus cannot track this cleanly no matter how good your setup/alignment is.
5. Also recheck your alignment . This could help reduce it.
Good luck.