Preamp for Tim Mellow's 6C33C OTL - 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 9th November 2010, 10:55 AM   #1
diyAudio Member
Join Date: May 2009
Default Preamp for Tim Mellow's 6C33C OTL


any preamp suggestions for Tim Mellow's 6C33C OTL amp?

two channels needed, normal and phono preamps. i'm planning something around e88cc tubes, but not nessessary...

what do you think about this?
Click the image to open in full size.

what for phono?

  Reply With Quote
Old 9th November 2010, 05:33 PM   #2
diyAudio Member
Palustris's Avatar
Join Date: Aug 2006
Location: Cape Cod
What is the input sensitivity of the amp? If you need more gain just add a single triode such as a 6J5 to the "front" of the amp. The above circuit adds several tubes and caps in the signal path along with neg FB.
  Reply With Quote
Old 9th November 2010, 06:37 PM   #3
diyAudio Member
Join Date: May 2009
input impedance is 26k.
  Reply With Quote
Old 9th November 2010, 07:13 PM   #4
el156 is offline el156  Portugal
diyAudio Member
el156's Avatar
Join Date: Apr 2010
The 6DJ8 needs at least to run at 5 - 6 mA to be more linear ....
  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
OTL designed by Tim Mellow with 4 6C33C? dwhitf Tubes / Valves 364 17th May 2017 04:50 PM
OTL design recommendation? (6C33C maybe?) arteitle Tubes / Valves 14 16th January 2012 03:37 PM
6C33C OTL DC schematic needed neazoi Tubes / Valves 29 25th June 2010 04:25 PM
Transformer for 6C33C OTL WALTER BURKHARD Swap Meet 1 29th June 2003 10:06 AM
Availability of 6C33C tubes? I need some for OTL amps tubetvr Tubes / Valves 39 31st January 2003 08:21 PM

New To Site? Need Help?

All times are GMT. The time now is 01:08 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