World-Designs-Forum  

Go Back   World-Designs-Forum > World Designs > WD Other Parts and Projects
Register FAQ Members List Calendar Gallery Today's Posts Mark Forums Read

WD Other Parts and Projects All other WD Parts and Projects

Reply
 
Thread Tools Display Modes
  #21  
Old 5th August 2021, 04:54 PM
bob orbell bob orbell is offline
Senior Member
 
Join Date: Nov 2009
Location: kettering northants.
Posts: 2,332
Default Re: WAD phono 3S Parts Selection Help

I have tried 10, 22 and 68uF in phono only to return to 10 on this new build, I could tell NO difference. Bob
Reply With Quote
  #22  
Old 5th August 2021, 06:11 PM
John Caswell John Caswell is offline
Super Moderator
 
Join Date: Dec 2005
Location: Wokingham, Berkshire
Posts: 1,677
Default Re: WAD phono 3S Parts Selection Help

Hi Colin,
Some 10F/400V elcos plus some .01F/2KV ceramic disc capacitors are on the way to you tomorrow. Sorry just missed the post today!

John
Reply With Quote
  #23  
Old 5th August 2021, 06:25 PM
colin.hepburn colin.hepburn is offline
Super Moderator
 
Join Date: Jan 2006
Location: Newtonhill Aberdeenshire
Posts: 2,633
Default Re: WAD phono 3S Parts Selection Help

Quote:
Originally Posted by John Caswell View Post
Hi Colin,
Some 10F/400V elcos plus some .01F/2KV ceramic disc capacitors are on the way to you tomorrow. Sorry just missed the post today!

John
Ok, thank you very much, John.
__________________
The Blues man

Turntable Rega 3 custom RB250 with ortofon 2M Blue /other goldring 1042 /WD phono2 /WD CF pre custom converted /WD psu2 /home built JE Labs Single Ended 6SL7/KT66/Speakers Frugal horns Mk1s
Other turntables AR EB101/Thorns TD150mk2/Thorns TD160mk2


If you have trouble reading my posts its because I am a dyslexic member
Reply With Quote
  #24  
Old 7th August 2021, 05:48 PM
colin.hepburn colin.hepburn is offline
Super Moderator
 
Join Date: Jan 2006
Location: Newtonhill Aberdeenshire
Posts: 2,633
Default Re: WAD phono 3S Parts Selection Help

Hi/all
My thanks to Bob and John for sending me those parts So the phono 3S parts box is expanding so now as per my phono 2 I will still be using the SoniqsSAX 0.1 2.2uf capacitors from Matthew I was going to use the Russian o.1uf Teflon t3s I have for C1and C2 but their way to big
Now turning to the resistor again as per the phono2 has the takman and holco as listed here

My PHONO 2
Issue Two Board
has takman Carbons in R13/14 R21/22 R37/38 All the others are metal film 0.5% tolerance Holco which are not available now and were replaced with the PRP PR9372 Series Metal Film

I can’t stretch to the Z-foils sadly but want to do the same thing to the first stage and all the way through the board using the three type choices available to me which are the takman carbon and metal plus the replacements for the holco types are the PRP PR9372 Metal film

So my thoughts are to use the carbons in the single path all the way through given as I like their sound and the metal film for anode and cathode I know this is down to my preference in the end but I am just interested in general discussion about which of the types resistors list here you would use and where you would use them on the phono3S board and why
Colin
__________________
The Blues man

Turntable Rega 3 custom RB250 with ortofon 2M Blue /other goldring 1042 /WD phono2 /WD CF pre custom converted /WD psu2 /home built JE Labs Single Ended 6SL7/KT66/Speakers Frugal horns Mk1s
Other turntables AR EB101/Thorns TD150mk2/Thorns TD160mk2


If you have trouble reading my posts its because I am a dyslexic member

Last edited by colin.hepburn; 8th August 2021 at 02:20 AM. Reason: me spelling again
Reply With Quote
  #25  
Old 7th August 2021, 09:25 PM
bob orbell bob orbell is offline
Senior Member
 
Join Date: Nov 2009
Location: kettering northants.
Posts: 2,332
Default Re: WAD phono 3S Parts Selection Help

In the past I have tried carbon resistors Colin, cant remember which brand, but were not for me, I found they made the sound mussy and returned to metal film, Morgan Jones books also say give them a miss, the Z-Foils I used are only in the first stage, as recommended by John, eight resistors, just over 130.00 but I can say now, money very well spent . You mention 5%, R11/12, 13/14, 19/20 need to be 1% or better and measured and matched if possible. Bob
Reply With Quote
  #26  
Old 7th August 2021, 09:37 PM
colin.hepburn colin.hepburn is offline
Super Moderator
 
Join Date: Jan 2006
Location: Newtonhill Aberdeenshire
Posts: 2,633
Default Re: WAD phono 3S Parts Selection Help

Quote:
Originally Posted by bob orbell View Post
In tYou mention 5%, R11/12, 13/14, 19/20 need to be 1% or better and measured and matched if possible. Bob
hi bob
a typo should have read 0.5% I'm not referring to the old carbon types but these here https://www.hificollective.co.uk/com...resistors.html
__________________
The Blues man

Turntable Rega 3 custom RB250 with ortofon 2M Blue /other goldring 1042 /WD phono2 /WD CF pre custom converted /WD psu2 /home built JE Labs Single Ended 6SL7/KT66/Speakers Frugal horns Mk1s
Other turntables AR EB101/Thorns TD150mk2/Thorns TD160mk2


If you have trouble reading my posts its because I am a dyslexic member
Reply With Quote
  #27  
Old 8th August 2021, 08:13 AM
bob orbell bob orbell is offline
Senior Member
 
Join Date: Nov 2009
Location: kettering northants.
Posts: 2,332
Default Re: WAD phono 3S Parts Selection Help

Colin, on the Hi-Fi Collective web site it say's 2% not .5%, 2% is still good but may make the RIAA correction a bit out, for example, 2% of R11/12 is 6320 ohms, where as 1% is 3160 ohms, I try to buy .1% for such circuits and select the two closest, in this case it would be + or - 316 ohms or better. Bob
Reply With Quote
  #28  
Old 8th August 2021, 04:40 PM
colin.hepburn colin.hepburn is offline
Super Moderator
 
Join Date: Jan 2006
Location: Newtonhill Aberdeenshire
Posts: 2,633
Default Re: WAD phono 3S Parts Selection Help

Quote:
Originally Posted by colin.hepburn View Post
hi bob
a typo should have read 0.5% I'm not referring to the old carbon types but these here https://www.hificollective.co.uk/com...resistors.html
Oops did it again yes the taxman carbons in the phon2 are the 2% types the others are holco the 0.5% types for R23/24 316k plus R25/26 39.2k the rest 1% Holco resistors which were used in the phono 2 build which sound very good when given good quality vinyl and shows up bad vinyl to well

And given that I only have a heavily modded Rega RB250 with an Ortofon moving magnet 2MM blue or a Goldring 1042 I think we are splitting hairs a bit on this for my set-up I am just trying to get some views on where best to place which type of the three resistor choices on the phono 3S board.
__________________
The Blues man

Turntable Rega 3 custom RB250 with ortofon 2M Blue /other goldring 1042 /WD phono2 /WD CF pre custom converted /WD psu2 /home built JE Labs Single Ended 6SL7/KT66/Speakers Frugal horns Mk1s
Other turntables AR EB101/Thorns TD150mk2/Thorns TD160mk2


If you have trouble reading my posts its because I am a dyslexic member
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 02:09 PM.


Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Copyright World Designs