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In Reply to: RE: When you say sibilance,do you mean harshness or exaggerated notes like when the treble is turned up? posted by Michael Samra on July 24, 2016 at 16:29:35
Yes, the amp is the one, i think. PP class A amp with fixed bias.
The amp seems to exaggerate the f,s, and t sounds. With some recordings showing more of that tendency. But, i believe that some of that is less now that the amp has more hours on it.
The sibilance was most pronounced on "The Pentangle, Basket of Light". With Jacqui MacShee? vocals had a real obvious exageration on f's and s's.
Now that the amp has played for almost 20 hours it is not as bad. I have been playing it today for almost 8 hours and i played that Pentangle cd again. The track is called Lyke-Wake Dirge. It is mostly male and female vocals recorded live. I think the recording has exaggerated the esses in consonants. Some of the other tracks with the same vocalists are not as "hot" sounding.
Perhaps, i am being too picky, but other than this, the amp sounds very good indeed. cheers, Dak
PS, perhaps, it is a testament to that amp that the recording's deficiencies, has been laid bare so obviously.
Edits: 07/24/16Follow Ups:
I would use paper in oil coupling caps because when there is DC voltage on the cap,paper in oil caps maintain linenerity with frequency change.I still would look at a 1khz sq wave and see what the final product looks like as that can tell you a lot.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
Hi Mikey, i am using PIO coupling caps. Do you think i should bail on the Vishays? regards, Dak
i should bail on the Vishays? regards, Dak
If you are using them as grid to ground in high stages,they are great.I use them in preamps but if you using them as plate,cathode,or grid stoppers,they aren't the best bet in that scenario.There are many Vishays tho,I speak of the RN65 or any metal film.
Are you able to run a 1khz sq wave thru the amp to see what it looks like?
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
Edits: 07/24/16
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