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

Strange idea for an output stage - comments requested
Strange idea for an output stage - comments requested
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 11th November 2009, 02:46 PM   #21
Tetrode is offline Tetrode  United States
diyAudio Member
Join Date: Oct 2009
I think sometimes we build weird stuff just for the sake of being weird.

This is one of those times.... BTW,I know this because i've been there many times.....

I think your better off using the 6l6's as tetrodes(easier to drive,better PSRR)and adding a stable GNFB loop.

Lose the 6N1p's(they sound like bad SS devices to me) and use your garden variety 9 pins or octals.

Built well and with a good OPT it can hang with ANY good tube or SS amp.
  Reply With Quote
Old 28th November 2012, 01:49 PM   #22
TVC is offline TVC
diyAudio Member
Join Date: Aug 2012
Originally Posted by ystkkmkr View Post

This schematic will be of your interest. You can find it on a Japanese DIYer's website. As the website says in Japanese (sorry), the original design of this SE-PP switchable class-A 300b amp was actually published by Mr. Takaaki Uzike (or Ujike) in a couple of issues of RADIO GIJYUTSU magazine (a monthly Japanese DIY magazine like MJ) in 2000. In the articles, he says he developed the circuit and assembled his 300b amp, in order to make the best use of Permalloy PP output transformers, and named this output stage configuration "floating OPT", which I think is equivalent to "parafeed PP". Mr. Uzike used a pair of Tango NY-45-5 (discontinued).


recently I got this pair and prepare for my 300B PP, but will start with EL34 PP to try it first.Click the image to open in full size.


  Reply With Quote
Old 29th November 2012, 03:31 AM   #23
Sch3mat1c is offline Sch3mat1c  United States
diyAudio Member
Sch3mat1c's Avatar
Join Date: Jan 2003
Location: Milwaukee, WI
Send a message via ICQ to Sch3mat1c Send a message via AIM to Sch3mat1c
Geez, 45W permalloy, those things must be worth, about their weight in 300Bs?!
Seven Transistor Labs, LLC
Projects and Resources / Electronic Design and Consultation
  Reply With Quote


Strange idea for an output stage - comments requestedHide 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
Wacky TL idea, comments? sifka4 Subwoofers 5 25th November 2008 01:43 AM
Strange preamplifier output stage Groundloops Solid State 5 21st December 2007 01:54 AM
Interesting output stage idea keantoken Solid State 18 15th November 2006 11:41 PM
Strange damping idea ... ? eppo Full Range 0 23rd May 2006 09:57 PM
Strange idea? Daniel-A Multi-Way 6 27th October 2004 08:25 PM

New To Site? Need Help?

All times are GMT. The time now is 03:45 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio