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In Reply to: RE: And? You've proven me to be correct,... posted by Tweaker456 on July 28, 2016 at 12:14:45
my advice is first to try to find the source of the hiss and fix it there, not at the speaker terminal. But now I am a bit confused as to whether you have an inordinate amount of hiss or you're just pursuing perfection (no hiss ever), which eludes most of us. Plus, my thoughts on the lo-pass filter are still the same; you cannot filter out hiss as we know it without losing gobs of musical information in the process. As to this specific question, the value of the capacitor will determine the -3db point of the filter. This is a first order function. So, a 0.1uF capacitor will place the roll-off frequency 10X lower than for a .01uF capacitor. .01uF is safe for musical information; it won't be lost. At 0.1uF, you'd have to listen for yourself. But it really does not matter; we know for sure that hiss is in the audible range, where music lives. You cannot eliminate one without eliminating the other. Which goes back to fixing the hiss at its source.
Edits: 07/28/16Follow Ups:
Too late for that. The recording "professionals" seemed to have all to often skipped class that day. T
I cannot recall ever hearing hiss from an LP. One occasionally encounters sibilance, which some might describe as a hissing sound that accompanies ssssss instrumental sounds or words that begin with "s" when sung by a vocalist. Sibilance has its own causes and treatments. On CDs, I cannot recall ever hearing hiss. There's such a thing as tape hiss, and some LPs and CDs were made from tapes, but in those cases I believe that the hiss was suppressed by complex filtering during transfer. So, in summary, I and apparently most others are not bothered by this phenomenon, perfectionists though we all may be. Which is why I suggested that you look to your own gear, not the source material, for the source of the hiss that understandably bothers you.
Lew, It must be that I'm hallucinatin like always or the ringing in my ears. I could use a cure for both! If one does a search for cd hiss one will come up with complaints and explanations. It ain't just little O'l maverick me. The problem is not on all cds. It's very bad on some. T
original recordings done in? Like are these CD's of recordings done back in late 50's early sixties or 70's.
Can you list a few that you are having the hiss issue with?
I have had some like that but it was in the original recordings and there is nothing you can do to remove it except the way I had said before which will degrade the overall sound quality.
Just try to enjoy the music tweaker! Too much thinking is not good! :)
I'll take your advice Cougar. I'm gonna sit back and listen to my Elna Silmic 2's. How's the RC network? Got Ready for Freddie? Back in the day I would bring that around to stores and everyone loved it. T
Edits: 08/07/16
I hate to see you not enjoying your system/updates. There will be other times and things to fine tune in your system. Can't do it all in a few weeks or months.
As for the RC network, It's really made the system sound better, it's more focused now and seems to have more depth. I did change AC plug on my amp the day before and that seemed to open things up too. Both still need to break in more.
I have not ordered that Freddie Hubbard CD yet "ready for Freddie". I will look for it tomorrow.
Have a glass or two of wine or beer and enjoy the tunes! :)
10-4 Get ready!
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