Finally, an affordable CD Transport: the Shigaclone story - Page 643 - diyAudio
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Old 2nd November 2012, 10:30 AM   #6421
tvicol is offline tvicol  Romania
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Many thanks as well !

Regards,
Tibi
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Old 4th November 2012, 03:03 PM   #6422
lucylu is offline lucylu  England
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The leads that came with my shiggy think they are jst-xh i am finding it very hard to make up, my big fingers ,.Does anybody know where i can purchase these ready made ? i have had a quick look around but no luck cheers john
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Old 5th November 2012, 05:17 AM   #6423
dmy is offline dmy  United States
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I've been following on this great transport thread for awhile and finally finished my unit. Out of the box it sounded quite nice. Thanks for such a great project.

Please allow me to ask a few questions.

How important is the 300 ohms and 100 ohms resister at the digital out ? I notice some use caddock, does resistor quality impact the sonic?

Is the following SanYo laser pickup on Ebay a replacement for the EZ-31?
SF-P101N 16 PIN SANYO LASEREINHEIT mit Mechanismus

Many thanks for your comments
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Old 5th November 2012, 08:23 AM   #6424
tvicol is offline tvicol  Romania
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Quote:
Originally Posted by dmy View Post
I've been following on this great transport thread for awhile and finally finished my unit. Out of the box it sounded quite nice. Thanks for such a great project.

Please allow me to ask a few questions.

How important is the 300 ohms and 100 ohms resister at the digital out ? I notice some use caddock, does resistor quality impact the sonic?

Is the following SanYo laser pickup on Ebay a replacement for the EZ-31?
SF-P101N 16 PIN SANYO LASEREINHEIT mit Mechanismus

Many thanks for your comments
Any component have his own sonic signature and therefore will have a sonic impact. Some components add more signature than others.
Now the question is: Is your system capable to make such difference ?.

There is no e-bay link in your message.
For your reference CD mechanics datasheet is on http://vicol-audio.ro/docs/DA11VZ.pdf

Regards,
Tibi
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Old 5th November 2012, 01:58 PM   #6425
TheGimp is offline TheGimp  United States
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Quote:
Originally Posted by tvicol View Post
Placing the resistor in that place is not the best option because LC78601 pin 22 will be affected as well and this may degrade DSP performance.

The mod can not be performed if LC78601 was soldered.
You need to perform the mod before soldering this chip.

First you need to cut the trace between pin 40 and pin 22 as per top_modification.jpg - left picture.
Than, turn the board on bottom and perform the modification as per bottom_modification - right picture. Instead L7 put a 1K2 resistor or a 2K potentiometer to get your preferred contrast and make a strap between two pads. The strap will bring back Vcc to pin 22.

Thats all.

Regards,
Tibi
Thanks Tibi.

As an additional change, make the cut shown in yellow, scrape the solder mask from two places on each side of the cut, and place the inductor removed in Tibi's instructions (L7) at this location. Now the filtering effect of the inductor and caps is still present.

Steven
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Old 5th November 2012, 02:29 PM   #6426
tvicol is offline tvicol  Romania
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Quote:
Originally Posted by TheGimp View Post
Thanks Tibi.

As an additional change, make the cut shown in yellow, scrape the solder mask from two places on each side of the cut, and place the inductor removed in Tibi's instructions (L7) at this location. Now the filtering effect of the inductor and caps is still present.

Steven
Excellent observation !
Thank you Steven !

Regards,
Tibi
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Old 6th November 2012, 12:13 AM   #6427
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Tibi, I've been sort of following what you and Steven have been doing here, but I must have missed something. It's not quite clear to me what this is supposed to do, or why it may be necessary.

BTW, my stuff is still colored Orange/Brown. What does that mean?
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Old 6th November 2012, 01:28 AM   #6428
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Hi Tibi,
Received package today. All is well and i like the "pink" barby doll wrapping paper.
Thank you for a great job.
Rob
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Old 6th November 2012, 01:42 AM   #6429
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Quote:
Originally Posted by dmy View Post
How important is the 300 ohms and 100 ohms resister at the digital out ? I notice some use caddock, does resistor quality impact the sonic?
Hi Dmy, allow me to share my humble opinion on the subject. I did a test similar to my "Big capacitor test", where I compared virtually every audio-grade resistor on the market at the Shiga output. I followed my usual methodology for such tests.

I would say the difference between an average resistor and another average resistor is typically small and requires considerable focus to pick up. However, the difference between an average resistor pair, and the best resistor pair (Vishay/Caddock in this case) is quite significant and easily discernible.

Likewise, the difference between the best resistor pair and the attenuator mentioned by Fran (woodturneer-fran) is quite obvious.

My feeling is, output resistors are less important than the critical caps (i.e. filter caps, C916/C43, C8/906); they are more or less on par with the less important caps, and somewhat more important than digital cable, diodes, transformer or puck.

Please have a look at my "Compiled Shigaclone guide" for more detailed descriptions. The guide is not really finished yet, as I did not have as much free time as I had hoped - but perhaps it will be of some use even in its present form.
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Old 6th November 2012, 02:29 AM   #6430
dmy is offline dmy  United States
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Quote:
Originally Posted by tvicol View Post
Any component have his own sonic signature and therefore will have a sonic impact. Some components add more signature than others.
Now the question is: Is your system capable to make such difference ?.

There is no e-bay link in your message.
For your reference CD mechanics datasheet is on http://vicol-audio.ro/docs/DA11VZ.pdf

Regards,
Tibi
Here is the link. Thanks

SF P101N 16 Pin Sanyo LASEREINHEIT Mit Mechanismus | eBay
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