Taming the high frequency


Looking for ideas/suggestions to tame high frequency harshness. Recently installed a Lexicon MC 12 processor after my Krell decided to go to the electronic graveyard. Since I did not have this issue before I'm assuming the Lexicon is more revealing. My dedicated listening room is 15X23x8 and is treated with GIK 244 and 242 panels along the front and rear wall at ceiling junctions and Accurex bass traps in the corners floor to ceiling. Along the front wall behind the speakers are some decorative thick blankets for absorbption. No slap echoes anywhere in the room. Room is dual purpose H/T and 2 channel stereo listening with separate systems. Systems consist of Proceed Pre, Adcom 555II Amp and B&W 803d speakers for 2 channel and Lexicon Pre/pro, Polk speakers for H/T and Emotiva XPA amp. How can I diminish the high frequency harshness I'm experiencing? Any ideas or realistic suggestions?

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Showing 4 responses by gillatgh

Noromance, I'm not sure a tube amp can provide the umph I require unless I win the lottery, so that's a real stretch. Yep, dug out my collection of speaker cables, audioquest, straightwire, transparent, blue eans and JW solid core. Tried them all with no noticeabl difference. Can't say I've ever heard of Audio Sensibility Impact interconnects. Loom of interconnects is all audioquest. I appreciate your reply. I really hope I don't have to go thru the cable witch hunt again. I'm hoping that some form of room treatment or correction can solve my issue. It' also not at all high frequencies just certain ones.
Ghost, thanks for your input. Thinking about it even with the Krell there was some harshness at certain high frequencies regardless of the source. It is possible that the Lexicon is more adept at identifying the problem. I’ve never used any room correction software and may have to try that. Someone else also mentioned cardas to me. It may be a solution.. ... yes all been in use a loooong time. This is very frustrating.

Thank you all for your input. It's all well received and valuable. I was hoping for room treatment correction if possible as that is the least costly but........
I will try an old standby solid cable to see if there is any improvement.........or not since it is already available. Lord I hope I can stay out of the cable experimentation scenario.

Problem solved by rearrnging some decor and furnishings. Thanks to all who had suggestions.and gave their opinions