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Shigaclone MKII Black - The builders Thread
Shigaclone MKII Black - The builders Thread
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Old 25th December 2017, 05:40 PM   #1631
tubo is offline tubo  Philippines
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Happy holidays everybody.

Tibi,

What are the new mods you did on the shiga?

Regards
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Old 27th December 2017, 08:50 AM   #1632
tvicol is online now tvicol  Europe
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Shigaclone MKII Black - The builders Thread Shigaclone MKII Black - The builders Thread
Season’s Greetings, Everyone!

Tubo,

Beside modification addressed in this thread, new mods address mechanic, pin diode Vref, laser ccs and several other points on main shiga mk2 board.

- on mechanic, over laser I add now a 1nF silver-mica in parallel with 100nF Vishay. For lubrication I use a teflon based one - it was presented in this thread.
- on laser ccs, across C19, again 1nF silver-mica
- finally U5 ADP151-2,5V ref for laser PIN detector is in place, but this require some extensive board modifications - I'll come back later with more pictures and details.
- now I use mini regs in places of V2,V3 and V4. For V1 I use LF50 as an alternative to LT1086-5 with excellent performance - note that these regulators need 100uF soldered on the output to eliminate any oscillations. Salas D-reflector for V1 and V2 are also a nice upgrade.
- in place of C24 I use a polypropylene. This cap greatly affect s/pdif signal quality.
- instead C48 and C51, I use now a single cap of 100uF oscon or polymer
- As foil capacitors are getting cheaper and smaller, I use polypropylene for C28, C30, C31, C38 as well.
- For C13 Sprague B1514 cap bring some very nice harmonics.
- if you look for a better clock, than I recommend Neutrino2 from newclassD

Regards,
Tibi
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Old 28th December 2017, 10:50 AM   #1633
tomw is offline tomw  Australia
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Default neutrino 2

Quote:
Originally Posted by tvicol View Post
Seasonís Greetings, Everyone!

Tubo,

Beside modification addressed in this thread, new mods address mechanic, pin diode Vref, laser ccs and several other points on main shiga mk2 board.

- on mechanic, over laser I add now a 1nF silver-mica in parallel with 100nF Vishay. For lubrication I use a teflon based one - it was presented in this thread.
- on laser ccs, across C19, again 1nF silver-mica
- finally U5 ADP151-2,5V ref for laser PIN detector is in place, but this require some extensive board modifications - I'll come back later with more pictures and details.
- now I use mini regs in places of V2,V3 and V4. For V1 I use LF50 as an alternative to LT1086-5 with excellent performance - note that these regulators need 100uF soldered on the output to eliminate any oscillations. Salas D-reflector for V1 and V2 are also a nice upgrade.
- in place of C24 I use a polypropylene. This cap greatly affect s/pdif signal quality.
- instead C48 and C51, I use now a single cap of 100uF oscon or polymer
- As foil capacitors are getting cheaper and smaller, I use polypropylene for C28, C30, C31, C38 as well.
- For C13 Sprague B1514 cap bring some very nice harmonics.
- if you look for a better clock, than I recommend Neutrino2 from newclassD

Regards,
Tibi
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Old 28th December 2017, 10:52 AM   #1634
tomw is offline tomw  Australia
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Sorry, I was going to ask is the neutrino 2 as good as the big brother neutronStar2? The neutrino 2 is more affordable.
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Old 28th December 2017, 11:51 AM   #1635
carolus is offline carolus  Belgium
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Quote:
Originally Posted by tomw View Post
Sorry, I was going to ask is the neutrino 2 as good as the big brother neutronStar2? The neutrino 2 is more affordable.
Hi.
FYI
I build in my (very old lady) Esoteric TEAC P2 the (new print/better concept) big brother NeutronStar2 with the new (print) PSU
It was desolder/solder/play ...
It's worth ... splendid

It's al music ... I like it.
Karel
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Old 29th December 2017, 01:47 AM   #1636
hartbigsky is offline hartbigsky  United States
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Will board work with U5 [2.5V ref] in place and 2 specified capacitors and no modifications?

Steve
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Old 29th December 2017, 07:09 AM   #1637
tvicol is online now tvicol  Europe
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Shigaclone MKII Black - The builders Thread Shigaclone MKII Black - The builders Thread
Quote:
Originally Posted by hartbigsky View Post
Will board work with U5 [2.5V ref] in place and 2 specified capacitors and no modifications?

Steve
Hi Steve,
Yes, the board will work just fine with AD151-2,5V reference in place, but will not bring expected sonic improvement.
You need to mount only U5 and C69, cut the U5 output trace immediately after U5 output. Remove L1 bead and grab a wire from U5 output to C11. On C11 mount a 10uF tantalum or oscon in parallel with a good quality 1Kohm resistor - preferably a metal foil one.
This mod will provide a very clean 2,5V reference to pin detector.
You'll love instrument extension and decay after this mod.
Quantum ultra high-grade have this mod inside, It was compared with players above 18000eur and now used as reference along some very big names.

Regards,
Tibi
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Old 29th December 2017, 02:58 PM   #1638
hartbigsky is offline hartbigsky  United States
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Do you have an image of this mod in place? Does silver mica stay in place Thanks

Steve

Last edited by hartbigsky; 29th December 2017 at 03:01 PM.
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Old 29th December 2017, 04:48 PM   #1639
tvicol is online now tvicol  Europe
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Shigaclone MKII Black - The builders Thread Shigaclone MKII Black - The builders Thread
Quote:
Originally Posted by hartbigsky View Post
Do you have an image of this mod in place? Does silver mica stay in place Thanks

Steve
I'll add some.
In the meantime, here are mods on CD mechanic.

Regards,
Tibi
Attached Images
File Type: jpg IMG_0417.JPG (338.7 KB, 345 views)
File Type: jpg IMG_0418.JPG (656.6 KB, 337 views)
File Type: jpg IMG_0419.JPG (729.7 KB, 330 views)
File Type: jpg IMG_0420.JPG (595.4 KB, 323 views)
File Type: jpg IMG_0421.JPG (474.3 KB, 315 views)
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Old 29th December 2017, 07:05 PM   #1640
tvicol is online now tvicol  Europe
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Shigaclone MKII Black - The builders Thread Shigaclone MKII Black - The builders Thread
Mods for new CD mechanic.
There is same 100nF PIO across turntable motor.

Regards,
Tibi
Attached Images
File Type: jpg 1.jpg (614.0 KB, 137 views)
File Type: jpg 2.jpg (529.5 KB, 111 views)
File Type: jpg 3.jpg (353.5 KB, 102 views)
File Type: jpg 4.jpg (515.4 KB, 104 views)
File Type: jpg 5.jpg (347.8 KB, 105 views)
File Type: jpg 6.jpg (957.7 KB, 105 views)
File Type: jpg 7.jpg (342.8 KB, 94 views)
File Type: jpg 8.jpg (376.3 KB, 93 views)
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