Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

C3m linestage
C3m linestage
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
Thread Tools Search this Thread
Old 12th April 2009, 04:47 PM   #31
bequerel is offline bequerel  Norway
diyAudio Member
Join Date: Sep 2003
Originally posted by milen007
i would like to build one myself. have the siemens tubes in my drawer.

got any schematic to share? TIA

The only two schematics I have ever seen are the one from kstagger who replied further up in this thread, and one that was posted over at vt4c.com some time ago:

  Reply With Quote
Old 14th April 2009, 12:22 AM   #32
sganti is offline sganti  United States
diyAudio Member
Join Date: Apr 2008
Default C3m pentode linestage

I have built and using a C3o linestage, but operating C3o in a pentode mode. C3o is a 6.3V version of C3m.

Somebody else posted a very useful warning, do not remove the tubes after you have turned off, I usually wait for 30 minutes. I lost a few C3m's this way, before I went with C3o. When I had the C3m, I was rectifying it, with C3o, I have a/c filaments.

The power supply uses Hashimoto PT-100, with a Hashimoto Choke for choke input supply. Then I have 4 regulators - one for each plate and one for each screen. These are current sourced -- shunt reg's. I am sorry I cannot post the schematic here, 'cause it is a borrowed schematic and not my own. You can also use Allen Wright's SuperReg - two of them, one for both Plates and one for both Screens.

Please shoot me an email to sridhar.ganti@gmail.com if you have any questions. This is the best linestage I have heard/built.

I also use VH Audio 1mF teflons for the o/p caps and Goldpoint 50K volume control and Goldpoint selector switch.

Chung had posted a copy of this at vt4c.com forum also.

  Reply With Quote
Old 14th April 2009, 06:03 AM   #33
sganti is offline sganti  United States
diyAudio Member
Join Date: Apr 2008
I will try to attach the schematic in this post

Attached Images
File Type: jpg current-c3m-linestage.jpg (29.3 KB, 855 views)
  Reply With Quote


C3m linestageHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
C3M linestage costa23 Tubes / Valves 15 23rd August 2009 08:53 AM
48V B+ linestage hirafu_boarder Tubes / Valves 24 11th May 2008 05:57 PM
My 6S19P Linestage sorenj07 Tubes / Valves 4 12th April 2008 06:21 PM
An almost DIY 6DJ8 Linestage JesseG Tubes / Valves 37 17th November 2007 11:43 PM
Another linestage...... kianbach Tubes / Valves 11 28th June 2005 05:34 PM

New To Site? Need Help?

All times are GMT. The time now is 10:59 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio