The Very Best Amplifier I Have Ever Heard!!!! - Page 197

nikosokey · 6th April 2012, 08:25 AM

Thanks Vitalιca
I have not done anything in particular I like to have friends.
So simple.

okmog · 6th April 2012, 01:11 PM

Quote:

Originally Posted by bigpanda

That thread is still open but not popular now. I still have some boards for them. If you are not serious, do not ask me to send invoice. Too many chicken-outs (after issuing invoice) .

4shared folder - goldmund

4shared folder - gm_white

Thanks for sharing!

bigpanda · 7th April 2012, 11:03 AM

If anyone can help me to furnish my BOM, please do so. Some of the components may not have a proper rating. For those who had finished and experienced, please comment on those ratings and make it easier for those who are going to work on this project.

For the 4.7pf caps on the main board, will 5p be as good? Thanks.

BP

AndrewT · 7th April 2012, 11:09 AM

What is the accuracy of the 5pF alternative? could it be +-1pF?

What is the required accuracy of the 4.7pF?

bigpanda · 7th April 2012, 12:17 PM

Hi AndrewT,

Thanks for reply.
Less say the spec from the vendor would be 10% (I will confirm with them) but the schematic never says anything about it.

BP

AndrewT · 7th April 2012, 02:19 PM

You will be very lucky to find a vendor that supplies 5pF +-10%, but there will be some.

The designer who specified 4.7pF probably also knew that @ that value most caps have a very wide tolerance range.

Tony · 7th April 2012, 10:39 PM

^what do? buy a hundred of those caps and test on a meter for the closest match....

cliffforrest · 7th April 2012, 10:41 PM

Quote:

Originally Posted by AndrewT

You will be very lucky to find a vendor that supplies 5pF +-10%, but there will be some.

The designer who specified 4.7pF probably also knew that @ that value most caps have a very wide tolerance range.

It is not easy to measure a 4.7pF cap to 10% !!

oiphy · 8th April 2012, 05:49 AM

why don't you just use 5pF???

Frosteh · 12th April 2012, 01:09 AM

Without reading through 197 pages of posts, could someone give me a brief rundown on this amp? Things I'd like to know:

1) Power output
2) Total cost (not incl. custom PCB) of parts
3) Recommended PSU or at least required input voltage
4) Performance compared to other DIY amps of similar price

7th April 2012, 10:39 PM	#1967
Tony diyAudio Moderator Join Date: May 2003 Location: Palatiw, Pasig City	^what do? buy a hundred of those caps and test on a meter for the closest match.... __________________ http://www.elab.ph/forum/index.php?topic=32688.0

8th April 2012, 05:49 AM	#1969
oiphy diy newbie diyAudio Member Join Date: Sep 2011 Location: norway	why don't you just use 5pF??? __________________ " If you're going throu hell, keep going"

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6th April 2012, 08:25 AM	#1961
nikosokey diyAudio Member Join Date: Sep 2009 Location: ΑΡΤΑ	Thanks Vitalιca I have not done anything in particular I like to have friends. So simple.

7th April 2012, 11:03 AM	#1963
bigpanda diyAudio Member Join Date: Jun 2004 Location: HKSAR	If anyone can help me to furnish my BOM, please do so. Some of the components may not have a proper rating. For those who had finished and experienced, please comment on those ratings and make it easier for those who are going to work on this project. For the 4.7pf caps on the main board, will 5p be as good? Thanks. BP

7th April 2012, 11:09 AM	#1964
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	What is the accuracy of the 5pF alternative? could it be +-1pF? What is the required accuracy of the 4.7pF?

7th April 2012, 12:17 PM	#1965
bigpanda diyAudio Member Join Date: Jun 2004 Location: HKSAR	Hi AndrewT, Thanks for reply. Less say the spec from the vendor would be 10% (I will confirm with them) but the schematic never says anything about it. BP

7th April 2012, 02:19 PM	#1966
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	You will be very lucky to find a vendor that supplies 5pF +-10%, but there will be some. The designer who specified 4.7pF probably also knew that @ that value most caps have a very wide tolerance range.

12th April 2012, 01:09 AM	#1970
Frosteh diyAudio Member Join Date: May 2011 Location: Kirkland, WA	Without reading through 197 pages of posts, could someone give me a brief rundown on this amp? Things I'd like to know: 1) Power output 2) Total cost (not incl. custom PCB) of parts 3) Recommended PSU or at least required input voltage 4) Performance compared to other DIY amps of similar price