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In Reply to: RE: Magnepan 1.7 high frequency harshness posted by CJmag on June 27, 2011 at 07:53:19
I am with you 100% with respect to not doing anything that would roll-off any of the high frequencies in order to make the sound more enjoyable. The bite in the HF that I am trying to solve is really minor, but still something I want to tame. I hope to take delivery on some Mouser chokes this week that many people (thank you) on this thread have suggested.
As a further experiment while I am waiting, I took the supplied attenutors that I tried early on and didn't like and gave them another listen. I may have tried them way too early before everything broke in. Listening with them on this weekend I found that they really did help manage the HF harshness. I was also really trying to see if they cut or rolled off anything, because that as you said is an anti-improvement regardless of what it may cure. I can't say that I noticed any drop in HF. It just seemed to take the edge off slightly.
For those who have experimented with the attenators and the chokes I would like to hear if you stayed with one solution or the other, or if you used both. I will certainly try my own experiments as well.
Follow Ups:
May I ask which chokes did you buy Bourne> ? What grade? thanks
J.W. Miller/Bourns (sold by Mouser):
5502-RC Desc.: Shielded RF Chokes 10uH 10% (9Amp)
5522-RC Desc.: Shielded RF Chokes 10uH 10% (20Amp) - Al Sekela's original rec.Have fun!
Edits: 02/18/12
Well, the Mouser chokes finally arrived and I put those in place of the attenuators. Thanks to all that suggested these. I'm no electrical engineer and I certainly wouldn't have even known about these without this forum. Nice improvement.
I tried both. I thought the 5522 had more impact than the 5502 and what Magnepan provided. It was particularly noticeable with live Jeff Beck (Live at Ronnie Scotts) and Larry Carlton (Last Night).
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