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Finally, an affordable CD Transport: the Shigaclone story
Finally, an affordable CD Transport: the Shigaclone story
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Old 29th May 2013, 03:54 PM   #7251
tvicol is offline tvicol  Romania
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Finally, an affordable CD Transport: the Shigaclone story Finally, an affordable CD Transport: the Shigaclone story
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Originally Posted by tonyptony View Post
Tibi, Mouser shows the same as Digikey. When I did a search by SMD size I found that the 1210 size (there are no 1206 SMD micas on the Mouser site) tops out at 430pF. The smallest 470pF is in a 1812 size.
1210 is OK and can be soldered.

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Tibi
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Old 31st May 2013, 09:14 PM   #7252
tonyptony is offline tonyptony  United States
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Behold, my two Per Anders SSR01 5V super regulators! They will drive the clock and the digital processing on the main PCB. I have to thank P-A for designing such a nice circuit board, and for being available to answer questions. Beautiful to work on; it was a joy to put together. Hopefully testing will begin tonight.
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Old 2nd June 2013, 07:10 AM   #7253
Erik van Voorst is offline Erik van Voorst  Netherlands
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Quote:
Originally Posted by alphaigor View Post
Hi everyone,

Few years ago I tried tubed digital lampizator and I liked it very much but I was concentrated on transport construction and somehow forgotten it in the process so I decided to try the sand version again.I can tell that I don't want to go back L-pad route anymore.I feel that this doesn't sound only ''different'' from usual resistor solutions and will be able to tell you more after few days of listening ,if anyone is interested ,of course .

Very interested....
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Old 2nd June 2013, 01:19 PM   #7254
tonyptony is offline tonyptony  United States
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Originally Posted by tvicol View Post
Look on Mouser, there must be more options.
You can use any value between 470pF to 1nF to decouple Tentlabs XCO.

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Tibi
Tibi, Guido recommended via email a 100nF NPO type for this purpose. I'm not sure what to do.
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Old 2nd June 2013, 01:58 PM   #7255
tvicol is offline tvicol  Romania
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Finally, an affordable CD Transport: the Shigaclone story Finally, an affordable CD Transport: the Shigaclone story
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Originally Posted by tonyptony View Post
Tibi, Guido recommended via email a 100nF NPO type for this purpose. I'm not sure what to do.

If you want to have a sensible improvement go for silver-mica.
NP0 will work ok, but 100nF is hard to find and very big for this purpose. In fact NP0 47nF is the biggest value I'm aware of.

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Tibi
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Old 2nd June 2013, 02:21 PM   #7256
tonyptony is offline tonyptony  United States
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Kemet makes a 1206 100nF NPO that seems to be what Guido was talking about.

C1206H104J3GACTU Kemet | 399-5750-1-ND | DigiKey

Certainly not cheap, though.
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Old 2nd June 2013, 05:37 PM   #7257
tvicol is offline tvicol  Romania
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Finally, an affordable CD Transport: the Shigaclone story Finally, an affordable CD Transport: the Shigaclone story
OK, go for it.

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Tibi
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Old 3rd June 2013, 01:26 AM   #7258
tonyptony is offline tonyptony  United States
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Well, my power supplies are all done. The last piece of the puzzle is the main PCB. Will be working on that throughout this week.
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Old 3rd June 2013, 10:09 PM   #7259
alphaigor is offline alphaigor  Croatia
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Originally Posted by Erik van Voorst View Post
Very interested....
Hi Erik,

As I stated in previous post the sound is more precise and credible but it have stolen the bit of magic and ease that simple L-pad posses.The long run listening ease was another brain trick because output level of the dac was slightly quieter with bf245 s/pdif. Unfortunately it was different only.Maybe this is because no regulation is used or it is another semiconductor active part that robbed the music hallucination factor.I remember that tubed version have done that part marvelous so I will report again after tried the tube .Maybe it will make good combination with your system.I have Magneplanars and that pinpoint presentation and credibility of instruments being played led me to listen to sound and less to the music so the conclusion is that valve version might be the ideal solution.Before returning to L-pad I have finally impregnated in parafin ,copper wire resistors so I can't tell that this was useless test ,it have moved me to go further and make some positive changes that had to be done much earlier.Maybe the problem is that I made unfair comparison since I can not make 15kOhm copper resistor because inductance would be to high and was constricted to test the circuit with generic parts on the input of the j-fet.You already know the huge difference in sound between industry and hand made ones and mine are made from non resistive material in bifilar configuration so the battle was unfair for shore.I use them in every place in the system where possible and the improvements in naturalness is stunning.For some this might seem the contradiction but credibility and naturalness in audio differ pretty much ,from my personal standpoint.First one characteristic is making me listen to the sounds and another more the music itself so I took the second route again.Try it yourself ,this is obviously subjective affair ,it take just 10 minutes of time if some 12V DC are ready for use and I have no doubt in that .

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Old 4th June 2013, 12:03 PM   #7260
uncle_leon is online now uncle_leon  Poland
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What you call "credible" is the same thing I call "flat dynamics" and "kills the soul of music" - and I run away at the very first sight of it . It is typical of over-engineered systems, with unnecessary gain stages, op-amps, buffers etc., especially where there is some sort of digital DSP involved. Also typical of nude Vishay resistors.

Naturalness, on the other hand, is astonishingly elevated with:
- wood-modding capacitors
- spider-modding the CD platform
- cables that use a thick layer of silk or cotton for insulator and no plastics
- passive, resistor-based pre-amps (as long as those resistors are not nude Vishay)

Alphaigor, you might want to try some resistance wire instead of copper. There are some alloys which make excellent sounding resistors. In fact, most of them sound good, as long as they are non-magnetic. Forgive me for not pointing to a particular one (my resistors are my source of income after all), but like I said most of them yield very good results, and should allow you to achieve much higher resistances.
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