OLD THREAD Hi-end phono preamplifier by Andrea Ciuffoli - Page 38

quanghao · 18th April 2011, 07:25 AM

Quote:

Originally Posted by pred

Hello guys,

I must be blind. I started to populate the regulator board and do not see R12 bleeder resistor nowhere. Where is it?

Thanks,
Pred

!it is near the cap 220uF!

pred · 18th April 2011, 11:08 AM

Quote:

Originally Posted by quanghao

!it is near the cap 220uF!

Hello, I must admit I still do not see it. Can you circle it for me on the jpg of your layout please.

Regards,
Pred

quanghao · 18th April 2011, 11:48 AM

Quote:

Originally Posted by pred

Hello, I must admit I still do not see it. Can you circle it for me on the jpg of your layout please.

Regards,
Pred

Yes it does have on board! but you weld it at the bottom capacitor 220uF 2 children, or no longer needed! it only to discharge the voltage!

Josep · 4th May 2011, 11:22 AM

Hello,

Is still possible to buy the phono + PS pcb?

Thanks

quanghao · 7th May 2011, 04:07 AM

Quote:

Originally Posted by Josep

Hello,

Is still possible to buy the phono + PS pcb?

Thanks

yeS! i stil have some PCB
Thanks
Quanghao

geek_83 · 13th July 2011, 08:23 PM

Hi
What do You think about using Russian SGM-4 Silver Mica CAPACITORS ??
ananiashvili2006 | eBay

sugarn · 16th July 2011, 02:42 AM

What is the Cag value of D3A tube in triode connect?

frd__ · 19th July 2011, 08:03 PM

Quote:

Hi
What do You think about using Russian SGM-4 Silver Mica CAPACITORS ??
ananiashvili2006 | eBay

I use them in this project - RIAA filter section. However, I have not run the board yet. Constant lack of time. I'll let you know how they are doing...

Cheers,
Frd

Josep · 24th November 2011, 03:20 PM

Is correct to change Rp to 1M and R1 to 280K in order to use C1=0.01uF and C2=0.0033uF (I have Auricaps 1% for these values)?

riaa.jpg

Thanks

Josep

DerTrommler · 19th January 2012, 01:27 PM

Hello,
is it still possible to buy a phono stage and and a shunt regulator. If i ngo on Quanghao it tells me no carrier to germany or switzerland?!!
Kind regards, Michael

4th May 2011, 11:22 AM	#374
Josep diyAudio Member Join Date: Jan 2002 Location: Europe	pcbs Hello, Is still possible to buy the phono + PS pcb? Thanks

24th November 2011, 03:20 PM	#379
Josep diyAudio Member Join Date: Jan 2002 Location: Europe	riaa changes Is correct to change Rp to 1M and R1 to 280K in order to use C1=0.01uF and C2=0.0033uF (I have Auricaps 1% for these values)? riaa.jpg Thanks Josep

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13th July 2011, 08:23 PM	#376
geek_83 diyAudio Member Join Date: May 2007	Hi What do You think about using Russian SGM-4 Silver Mica CAPACITORS ?? ananiashvili2006 \| eBay

16th July 2011, 02:42 AM	#377
sugarn diyAudio Member Join Date: Jun 2004 Location: Bangkok	What is the Cag value of D3A tube in triode connect?

19th January 2012, 01:27 PM	#380
DerTrommler diyAudio Member Join Date: Nov 2008	Hello, is it still possible to buy a phono stage and and a shunt regulator. If i ngo on Quanghao it tells me no carrier to germany or switzerland?!! Kind regards, Michael

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