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

Tubelab Discussion and support of Tubelab products, prototypes and experiments

Thread Tools Search this Thread
Old 2nd November 2010, 11:56 PM   #1
Steven-H is offline Steven-H  United States
diyAudio Member
Join Date: Jan 2007
Location: The 1st State
Default 809 Tubelab SE ?

Just as the title states; anyone give some 809 tubes a try ? I know that this would take some work; but it seems like powerdrive would surely let the grid current flow.
  Reply With Quote
Old 3rd November 2010, 12:25 AM   #2
Tubelab_com is offline Tubelab_com  United States
diyAudio Member
Tubelab_com's Avatar
Join Date: Jul 2005
Location: West Virginia panhandle
I have some 809's but I haven't tried them in the TSE yet. I have toyed with the 811A which shares the same problem, high plate resistance. I had the 811A running in the TSE a few years ago. I came to the conclusion that the 811A will not do well in SE mode without some feedback. I suspect that the 809 is similar, but haven't actually tried it. For now I have too many higher priority experiments to work on.

Both of these tubes may be viable options with speakers suitable for current drive. Both also require an external filament power supply.
Tubelab, it's 5 year mission. To explore strange new tubes, to seek out new circuits and topologies, to boldly go where no tube has gone before......
  Reply With Quote
Old 6th November 2010, 06:04 PM   #3
w5jag is offline w5jag  United States
diyAudio Member
Join Date: Feb 2007
Location: Arkansas
I've thought about using 811A or 572B in a Simple SE - sort of.

My thought was to build up a low power Simple SE for 6Y6, 6W6, 6V6 or something similar and use an interstage transformer insead of an OPT, then use this Simple SE to drive an 811A or 572B output stage in class A2.

This would be basically the same thing as the A2 811A amp on the One Electron website.

I have all of the parts save the interstage transformers, and it should be a reasonably easy project since there are similar builds already out there, but I have a lot of projects to get to before this one.

  Reply With Quote


809 Tubelab SE ?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tubelab SE vs Simple SE Pez Tubelab 25 29th October 2011 02:16 AM
Need Help with Tubelab SE lth1 Tubelab 9 1st October 2010 09:06 PM
Tubelab SE for other tubes Nikon1975 Tubelab 1 16th February 2010 05:52 PM
Tweaking the Tubelab SE Nikon1975 Tubelab 10 4th February 2010 03:58 PM
tubelab se DimZ Tubelab 58 20th January 2009 12:47 PM

New To Site? Need Help?

All times are GMT. The time now is 10:02 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