A question of bias... - Page 4 - 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 28th August 2003, 09:30 AM   #31
diyAudio Senior Member
fdegrove's Avatar
Join Date: Aug 2002
Location: Belgium

and best sounding are matched PP output pair with a tweaked imbalance to give the smoothest harmonic distortion progression i.e. with 2nd higher than 3rd and a nice smooth roll off out to higher harmonics (actually after 5th or 6th they are in the noise...). This seems to be between a 5 and 20% imbalance depending on the circuit and individual valves...
That's exactly what I mean, James.

A few friends of mine and myself came to this conclusion by experience.
It doesn't work on all amps but most class AB amps seem to benefit.

I also like the idea of using a pair of identical SE OPTs as an experiment.
It's likely to be an expensive project, though.

I vaguely recall Dave (Planet10) toying with the idea around this time last years.

  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
F5 bias question richD Pass Labs 12 4th March 2013 12:57 PM
CCS bias question alexmoose Tubes / Valves 4 22nd July 2006 05:21 PM
Bias pot question Burnedfingers Tubes / Valves 1 1st January 2006 02:49 PM
a75 bias question SteveG Pass Labs 3 16th January 2002 11:06 PM

New To Site? Need Help?

All times are GMT. The time now is 04:36 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