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Old 21st July 2012, 07:31 PM   #6051
tvicol is offline tvicol  Romania
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Quote:
Originally Posted by john dozier View Post
Please remove me from the order list as I have decided to go in another direction with a server based system. Thanks for your hard work on this projectr and I may revisit this when my HD system is up and running. Thanks again John Dozier
You have been removed from the list.

Regards,
Tibi
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Old 26th July 2012, 12:06 PM   #6052
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Hi Tibi,
Could you please post the latest version of the schematics? The last one still have the old values for some caps.
Thanks!
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Old 26th July 2012, 12:23 PM   #6053
tvicol is offline tvicol  Romania
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Here is the latest version.
There may be some changes on C18 from 33nF to 47nF - still testing this.
BOM will be amended in the coming days (only components name change)

http://www.vicol-audio.ro/img/shigac...8_24072012.pdf

Regards,
Tibi

Last edited by tvicol; 26th July 2012 at 12:33 PM.
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Old 26th July 2012, 12:37 PM   #6054
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Thanks for the fast reply, but I think there's a problem with the link...
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Old 26th July 2012, 12:59 PM   #6055
tvicol is offline tvicol  Romania
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Sorry. I can not attach the file as is over forum limit - 200K.

http://www.vicol-audio.ro/img/shiga/...8_24072012.pdf

In the coming days all documentation will be centralised on http://vicol-audio.ro/shiga.php

Regards,
Tibi

Last edited by tvicol; 26th July 2012 at 01:02 PM.
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Old 26th July 2012, 05:22 PM   #6056
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Hi everyone,
Been working my way through the BOM and two things have me confussed at the moment.

Is the 18 pin ribbon cable missing from the BOM? or is it supplied with something else?

The other is the cd TOC button SW5. The schematic shows a NC switch in practice it needs to be NC. but the part in the BOM is NO
I imagine its the commentary that follows that I dont understand
~ "in combination with TrX"

Can anybody shed some light please?

BTW great job tvicol and friends getting this awsome group buy together.

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Old 26th July 2012, 08:14 PM   #6057
endia is offline endia  Turkey
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Hi all,
i'm searching for a dac for shigaclone (will buy one from Tibi) but can't choose one.. i was thinking a WM8741 WM8805 dac but later decided to try a nos dac.. and want to learn your experiments.. which one do you suggest?
thanks..

TE7022 USB WM8741 WM8805 Coaxial Optical DAC Decoder 24Bit with case V1.7 | eBay

Hi-End DAC 8pcs TDA1543 Chips 24Bit 96kHz 115V/230V | eBay

(SUMMER SALE) DAC TDA1541+WM8805 NOS 1.0UI multi-input | eBay

TeraDak V3.1D DAC TDA1543 NOS 31D 96k/24bit & USB DAC N | eBay

Valab TDA1543 NOS USB Re-Clock DAC MK-1 Luxury Version | eBay
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Old 26th July 2012, 08:57 PM   #6058
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Quote:
Originally Posted by tvicol View Post
You have been removed from the list.

Regards,
Tibi
Hi,
Is it still possible to join the list?
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Old 27th July 2012, 07:22 AM   #6059
tvicol is offline tvicol  Romania
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Thanks to spartan who sent me several observations by mail.

IŽll put, also here, some of my email comments.

C27 must be 10uF and yes this have major sound impact.
C21 is in fact 100nF on the original board. We will change this as well.
C43 must be around 220uF and will have sonic impact. A high quality one is a must - go for tantalum, polymer, Rubycon ZA.
C48 and C51 are decoupling caps and are related to layout. A tantal 10uF will do a better job than original 100uF.
We have found also that C18 is 47nF on the original.

Best regards,
Tibi
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Old 27th July 2012, 07:33 AM   #6060
tvicol is offline tvicol  Romania
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Quote:
Originally Posted by blueworm View Post
Hi everyone,
Been working my way through the BOM and two things have me confussed at the moment.

Is the 18 pin ribbon cable missing from the BOM? or is it supplied with something else?

The other is the cd TOC button SW5. The schematic shows a NC switch in practice it needs to be NC. but the part in the BOM is NO
I imagine its the commentary that follows that I dont understand
~ "in combination with TrX"

Can anybody shed some light please?

BTW great job tvicol and friends getting this awsome group buy together.

Due the fact that 18 pin ribbon cable is expensive and connectors are hard to find, it was replaced with this connector.
Click the image to open in full size.

TOC button switch must be NC (Normal Connected).
These are hard to find and quite expensive.
Instead we use now a NO (Normal Open) button who is noted Sw3 on schematic. Q4 is doing the NC job now. In normal state Q3 is saturated trough R53 resistor. When the Sw3 is ON, Q3 Vbe is 0V and current trough Q3 is going near to 0mA, this will change the state to NO.
Hope this make thing clear.

Thanks & regards,
Tibi

Last edited by tvicol; 27th July 2012 at 07:35 AM.
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