Aleph 30 the best choice of C1 C2 C3 on brian gt PCB - Page 17 - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

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 8th August 2012, 02:38 AM   #161
diyAudio Member
 
Join Date: Feb 2012
i am following this psu schematics :
Click the image to open in full size.

this is the worse psu i ever tried!!!
very very big distortion, noise, and hum....
  Reply With Quote
Old 8th August 2012, 08:09 AM   #162
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
nothing wrong electrically with it , but physically you need to make it completely opposite

star gnd must be positioned exactly between C14 and C15 (for R channel) and exactly between C16 and C17 (for L channel)

besides that , you need to make a bridge with fat wire between these two points

it's much better having two bridges config - Papa explained reasons for that (avoiding any possibility that nonsymmetrical load induce buzz in windings) ....... and - if having two (per channel dedicated) C banks , then is best that each bank have own 2 bridges

that way one can have almost dual mono approach , without need for mentioned fat wire between two central grounds
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 8th August 2012, 10:24 AM   #163
diyAudio Member
 
Join Date: Feb 2012
exactly zen mod,
star ground located at transformers CT or between two bridge diodes was a real bad idea...

i am trying some psu schematics, but no one can real eliminates hum and hiss,
do you have one reliable psu schematics?
  Reply With Quote
Old 15th November 2012, 05:38 PM   #164
Banned
 
Join Date: Nov 2008
Hi, guy

Here're my oldy but goody Aleph 30

Thanks
Anadigit

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.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
  Reply With Quote
Old 15th November 2012, 11:08 PM   #165
Mr. dB is offline Mr. dB  United States
diyAudio Member
 
Mr. dB's Avatar
 
Join Date: Dec 2003
Location: Arkansas
Do you think you could make those tiny, postage-stamp sized images somewhat larger?
  Reply With Quote
Old 13th January 2016, 11:26 AM   #166
diyAudio Member
 
cumbb's Avatar
 
Join Date: May 2005
Location: different/relative
My suggests - some years later ... sorry-)

Do NOT use channel-separated psus!!!!!!!!
Do not use thick wire, or copper-plates!!!!
Do not use mounts.
Do not crimp.
Do not use unlaqueured lace-wire.

Do use ca. 1,5 mm solid core. Not more!
How to bridge caps: 20 mF - 2 mF - 0,2 mF - and so on! The same types! One time per psu - an aleph has two, + and -, is okay.

Better - the same capacity as example: 10 x 2 mF or so, at ONE circuit,-!!!!!

Sometimes it is useful to try some points to set the "ground-star". As near as possible at amps and last caps I would try first.

And many/much more,-)

LG
  Reply With Quote
Old 13th January 2016, 11:26 PM   #167
diyAudio Member
 
Danger Mouse's Avatar
 
Join Date: Nov 2011
Location: beautiful Oberpfalz Bavaria
Do NOT use channel-separated psus!!!!!!!!

And why not go the dual mono way?


maybe you could explain your tipps?
  Reply With Quote
Old 13th January 2016, 11:28 PM   #168
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
or they are trips ?

__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 14th January 2016, 06:59 AM   #169
diyAudio Member
 
cumbb's Avatar
 
Join Date: May 2005
Location: different/relative
Simple: You have not tried this - your answer would be an other,-)
The discourse about sense, about hearing later.

LG
  Reply With Quote
Old 14th January 2016, 09:22 AM   #170
diyAudio Member
 
Danger Mouse's Avatar
 
Join Date: Nov 2011
Location: beautiful Oberpfalz Bavaria
Yes i have tried and have heard no significant difference.
2 Aleph J one with dual mono, the other with one for all psu.

Dual mono i use for better feeling and a peaceful sleep

Or if space is limited if one 1,2kV tranny is to big. And 2 0,6kV would fit stacked.
  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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Brian GT Aleph and PS boards mattattnet Swap Meet 2 17th September 2011 02:10 AM
Axials for C1/C2 on SSE? dr0ss Tubelab 5 28th August 2010 08:50 AM
Aleph 5 with Brian GT boards. (help) edoirt Pass Labs 11 31st July 2006 05:15 PM
C1 and C2 in BoSoZ ruangrit Pass Labs 3 29th January 2003 03:06 PM


New To Site? Need Help?

All times are GMT. The time now is 07:20 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
Copyright 1999-2016 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki