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Old 1st December 2017, 09:17 AM   #21
TNT is offline TNT  Sweden
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The "lid" looks like a bell - maybe something less ringing would sound even better?

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Old 1st December 2017, 05:35 PM   #22
Joachim Gerhard is offline Joachim Gerhard  Germany
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No, it is well damped.
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Old 1st December 2017, 10:53 PM   #23
Henderson is offline Henderson
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May you load us a picture of the round thing without its plastic clothes, please?


What about a shunted volume pot instead serie ?
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Old 2nd December 2017, 12:41 AM   #24
Joachim Gerhard is offline Joachim Gerhard  Germany
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Actually i did not open it so far. I can ask my Japanese friends what they found. As far as i can remember it is some Chinese stuff they could not decifer but i may be wrong.
The problem with the shunt pot is that you loose some dynamic range. I have build a very high speed preamp though with a shunt pot that sounds fine. Even a good conventional pot gets is trouble over 100kHz where parsitics play a role. A shunt pot is much more wideband as far as i can tell. Of cause different Pots perform different. I am very happy with the one i have. Tomorrow i make a photo how i implemented it and look what type it is. I think it is a Vishey conductive plastic item.
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Old 2nd December 2017, 03:00 AM   #25
Badge is offline Badge  United States
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Joachim, does it have enough computing power to upsample?
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Old 2nd December 2017, 11:32 AM   #26
Henderson is offline Henderson
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Your inputt let me think the vol pot is as important as the other circuit around. Maybe with the serie resistor < 1k and the shunted pot with cermet instead plastic or carbon one should have the dynamic back ? But there are also now those very cheap 12 taps resisitors pots sold on EBay. All this should be important as you are talking about cable and indeed shows the good Eichmann type plugs (like the Oyaiide myself made like that but different material)


thread subscribed, cheap & good sound is the goal, interresting targett
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Old 2nd December 2017, 11:12 PM   #27
Joachim Gerhard is offline Joachim Gerhard  Germany
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In my experiments carbon is noisy and cermet is bright. I prefer conductive pastic. A pot just before the poweramp is the best solution i think when you only use one pot. If you use two pots i whould put one before the buffer to lower distortion and after the buffer for preserving dynamic range. I have seen Japanese integrated amp with up to 4 pots in a row for good reason. Of cause every pot has its own sound so a lot of pots violate Ockhams Law and the KISS priciple.
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Old 3rd December 2017, 12:36 AM   #28
Henderson is offline Henderson
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I will try your pot...


Too much an expensive stuff today than the good one. Tried to look for a Muse chip one with external oap ! Quite current little kits in Japan but didn't find one ; didn't go for Ebay cause the fear of the cunterfact chip or B sorted one... as bad pcb layout!


I will follow the plastic pot tip! Littliest taps resitors vol plot are not confortable enough to live with and the biggest not wallet proof
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Old 3rd December 2017, 02:30 PM   #29
Joachim Gerhard is offline Joachim Gerhard  Germany
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We designed a volume control with the Muses chip on the Frickelfest Forum.
It is quite a lot of circuitry. I have one of those but never tried it. People that tried it where happy but in terms of sound i only trust what i hear at home in my privat system.
I got the original chips from Tokyo from a source i trust.
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Old 3rd December 2017, 02:59 PM   #30
Joachim Gerhard is offline Joachim Gerhard  Germany
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Default Vol Pot

These are my volume controls. 10kOhm, one on each channnel so i can control balance.
That may be unconvenient for some but i got used to it. Exact balance is very critical for good focus and 3 dimensional soundstage.
The pot is just direct before the power amp so capacitve loss in the treble is minimized.
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File Type: jpg Vol Pot 2.jpg (74.3 KB, 64 views)
File Type: png Vol Pot 3.PNG (744.0 KB, 63 views)
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