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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?

128x128gillatgh
gillatgh's avatar
gillatgh OP
381 posts
 
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.

bar81
791 posts
 
I've found that harshness can be from various factors.  One thing you can try for cheap is to listen off axis (i.e., point the speakers ahead instead of towards your ears).  Also, quality of power can be relevant as well, you might want to look into power conditioning - I found that something like the Shunyata Denali definitely makes a difference.  With regard to your room treatment, I don't see anything that indicates that you have treatment at the first reflection points on the side walls or ceiling.  Also, I assume you have a think rug or similar covering the floor from the speakers to you because that's important as well for reflections.
schubert
7,386 posts
 
Two things have helped  me , put a blanket over any TV in the room and
 turn off your wi-fi .
gillatgh's avatar
gillatgh OP
381 posts
 
Problem solved by rearrnging some decor and furnishings. Thanks to all who had suggestions.and gave their opinions
ghosthouse's avatar
ghosthouse
4,316 posts
 
Good!  No more ear bleed.
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