5687_6n1p_6p1p_gary pimm - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs 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

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 15th July 2004, 08:26 PM   #1
diyAudio Member
sparkle's Avatar
Join Date: Oct 2003
Location: middle of nowhere...
Question 5687_6n1p_6p1p_gary pimm

Hi guys!
I have made some line preamplifiers using 5687 tube and grounded cathode configuration. Also tried grounded cathode as first stage and cathode follower as second stage. Still have to try 6N1P tube as grounded cathode to see if I like the sound of that tube.
What I know for sure is that I like the sound of the one stage line preamplifier that doesn't cost a fortune to make.
The question is that I would like to make one stage preamplifier better than grounded cathode. So I have decided to make mu follower with 5687 as lower tube and maybe penthode as the top tube (maybe 6P1P).
Also I think that it is not a bad idea to use Gary Pimm's CCS and 5687.

Did anyone tried this one (or with 6N1P)? I would like if someone has some experience with this one so he could explain/help me how this would work and what values should I put in those CCS from Gary so it would actually work.
Best regards
  Reply With Quote
Old 15th July 2004, 09:13 PM   #2
G is offline G  United States
diyAudio Member
G's Avatar
Join Date: Apr 2002
Location: Belleville, IL.
Hi Sparkle,

Here is a current source that might interest you:


Cheaper than a pentode source and performs as well if not better. At low current only a small heatsink is needed. Cheers.
  Reply With Quote
Old 16th July 2004, 05:22 AM   #3
diyAudio Member
sparkle's Avatar
Join Date: Oct 2003
Location: middle of nowhere...
G, thanks - that is a nice link... Yesterday when I have posted first mail in this thread I have been reading Mr. Pimm's rev.3 ccs. I think I will use this version (or rev.4) rather than the device suggested by mr. Millett......

Thanks again.

BTW, is there anyone that has some informations about 5687 or 6n1p with ccs from mr. Pimm.
  Reply With Quote


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
is Gary Pimm still around? Nanook Tubes / Valves 9 17th June 2007 09:15 PM
Gary Pimm's MOSFET CCS Fanuc Solid State 4 31st March 2007 10:46 PM
Gary Pimm Jaime Tubes / Valves 0 24th January 2007 11:03 PM
mr. pimm's ccs rev.3? sparkle Tubes / Valves 9 25th August 2004 06:40 AM
Newly CCS circuit from Pimm mrstone Tubes / Valves 0 16th February 2004 09:04 AM

New To Site? Need Help?

All times are GMT. The time now is 11:21 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2