The Phonoclone and VSPS PCB Help Desk - Page 201 - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 20th June 2012, 12:33 AM   #2001
rjm is offline rjm  Japan
Richard Murdey
diyAudio Member
 
rjm's Avatar
 
Join Date: May 2004
Location: Kyoto
Blog Entries: 98
My web page is down today (June 19/20), its giving me a DNS error.

Not sure what is going on...
__________________
RJM Audio (phonoclone.com / G+)
  Reply With Quote
Old 20th June 2012, 12:51 AM   #2002
diyAudio Member
 
dimkasta's Avatar
 
Join Date: May 2010
Location: Athens
I am a web designer and administrator. PM me if you need help

nslookup times out, so it s probably your domain name that expired, or the dns entries on your host/registrar got messed up
  Reply With Quote
Old 20th June 2012, 06:14 AM   #2003
simonov is offline simonov  Bulgaria
diyAudio Member
 
simonov's Avatar
 
Join Date: Aug 2005
Location: PZ
It is working just fine
  Reply With Quote
Old 20th June 2012, 08:15 AM   #2004
rjm is offline rjm  Japan
Richard Murdey
diyAudio Member
 
rjm's Avatar
 
Join Date: May 2004
Location: Kyoto
Blog Entries: 98
Thanks guys. It was a temporary problem with my hosting company.
__________________
RJM Audio (phonoclone.com / G+)
  Reply With Quote
Old 21st June 2012, 09:02 AM   #2005
diyAudio Member
 
Join Date: Nov 2005
Hello,

First the Pr0n.


Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Worked first time! no issues

Did'nt like the OPA2132 so I switched it for a AD8620 nice

Socketed the input resistors, should have done the gain resistors too, but it was too late when the thought came across my mind.

Click the image to open in full size.

Thank You Richard.

Last edited by blueworm; 21st June 2012 at 09:17 AM.
  Reply With Quote
Old 22nd June 2012, 01:25 AM   #2006
diyAudio Member
 
Join Date: Nov 2006
Hello all,

I recently completed a phonoclone 3 build and I am very happy with it. I socketed R1 and R2 but I'm not happy with the result. I have already bent one socket while putting in a resistor. Maybe I just picked a substandard socket. What is a good quality socket to use? I do intend to switch cartridges fairly often.

I wonder if a terminal block such as Mouser part 845-MV-253 would work better. It is a 3 pin pcb mount with 5.08mm pin spacing, so the end pins are 10.16 mm apart which I believe is the correct spacing. I would remove the middle pin.

Does this seem like a workable idea? What other solutions have people come up with for easy R1 and R2 substitution?

Thanks,
Mark
  Reply With Quote
Old 22nd June 2012, 02:00 AM   #2007
240z4u is offline 240z4u  United States
diyAudio Member
 
Join Date: Dec 2004
Location: Madison WI
Send a message via AIM to 240z4u
Richard, this is a very nice phono stage you have designed. I have been using mine with a shinon red since late last year. I would like to get a bit more high end brightness and think changing resistor values may help. I have a frequency sweep of this rig and it shows that its rolling off.

Now, I am not sure which resistors to mess with. I swapped R1 but am not sure this is the right way to go about it. I know this is different than a typical phono stage, so I wanted to ask.

Thank you.

Evan
__________________
Yeah... it seemed like a good idea at the time.
  Reply With Quote
Old 22nd June 2012, 07:41 AM   #2008
diyAudio Member
 
dimkasta's Avatar
 
Join Date: May 2010
Location: Athens
Evan the RIAA is perfect as it is. I would suggest trying a better C3 cap and checking that your VTA is not too low.

Mark I am really against using things as sockets, but I have seen people using screw terminals. You are asking if it will work better. Well mecahnically probably, but I do not know what it will bring in the sonic side of things.
My approach would be to expose some nice and comfortable pads so that I could solder and desolder easily the resistors directly to them

Dimitri
  Reply With Quote
Old 22nd June 2012, 02:02 PM   #2009
240z4u is offline 240z4u  United States
diyAudio Member
 
Join Date: Dec 2004
Location: Madison WI
Send a message via AIM to 240z4u
Thanks Dimitri, you confirmed what I had suspected.. that I needed to look elsewhere for improvement.

Evan
__________________
Yeah... it seemed like a good idea at the time.
  Reply With Quote
Old 22nd June 2012, 02:19 PM   #2010
diyAudio Member
 
dimkasta's Avatar
 
Join Date: May 2010
Location: Athens
Well to be fair, the final result depends a lot on your other setup too, so I can only guess what could be wrong.
From my experience with Richard's kits, the single point that needed upgrade was C3. What I tried to fix in my setup was slightly problematic highs and weak lows. I used a Mudorf supreme (no silver, no oil, the plain black ones) and the result was top notch in all aspects.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



New To Site? Need Help?

All times are GMT. The time now is 06:30 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2