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

6sn7 driving Push Pull Parallel kt88's?
6sn7 driving Push Pull Parallel kt88's?
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
Reply
 
Thread Tools Search this Thread
Old 27th October 2012, 11:47 AM   #1
ruben alstad is offline ruben alstad  Norway
diyAudio Member
 
Join Date: Jun 2012
Location: Lillesand Aust-Agder
Default 6sn7 driving Push Pull Parallel kt88's?

Does the 6sn7 have guts to drive a quad of kt88s in push pull parallel.
in a Williamson configuration that is.

id assume so since the 12au7 drives kt88s in normal P-P in many circuits,
and the 6sn7 seems to be alot like it but just bigger and more linear.

any suggestions?
  Reply With Quote
Old 27th October 2012, 12:00 PM   #2
bigspeaker is offline bigspeaker  Australia
diyAudio Member
 
Join Date: Oct 2012
Quote:
Originally Posted by ruben alstad View Post
Does the 6sn7 have guts to drive a quad of kt88s in push pull parallel.
in a Williamson configuration that is.

id assume so since the 12au7 drives kt88s in normal P-P in many circuits,
and the 6sn7 seems to be alot like it but just bigger and more linear.

any suggestions?
the 6sn7 should be what you call the phase split inverter its what drive the output tubes there shoud a be a 2nd 6sn7 driving the first 6sn7 the gain or guts comes from the pre driving into the 2nd 6sn7 witch then drives the 1st 6sn7 the phase tube its what we call drive/phase/output the 6sn7 is the big daddy to the 12ax7 i have added data sheets
abd some circuts to give you a idear
Attached Images
File Type: gif RU-6H9C.gif (147.5 KB, 767 views)
File Type: gif RCA-6sn7%20spec_0.gif (40.2 KB, 728 views)
File Type: jpg imgres.jpg (7.8 KB, 725 views)
File Type: jpg playmast_116[1].jpg (148.0 KB, 736 views)
  Reply With Quote
Old 27th October 2012, 12:08 PM   #3
ruben alstad is offline ruben alstad  Norway
diyAudio Member
 
Join Date: Jun 2012
Location: Lillesand Aust-Agder
Quote:
Originally Posted by bigspeaker View Post
6sn7 is the big daddy to the 12ax7 i have added data sheets
abd some circuts to give you a idear

so i take it two 6sn7s one for gain and one for phase driving 4 kt88s is viable.
i thought the 6sn7 was more like the 12au7 because of gain factor.
  Reply With Quote
Old 27th October 2012, 12:19 PM   #4
bigspeaker is offline bigspeaker  Australia
diyAudio Member
 
Join Date: Oct 2012
Quote:
Originally Posted by ruben alstad View Post
so i take it two 6sn7s one for gain and one for phase driving 4 kt88s is viable.
i thought the 6sn7 was more like the 12au7 because of gain factor.
12ax7 will be better 12au7 to low if you are using it for guitar amp i buit such a amp with 12ax7 and it worked very well
  Reply With Quote
Old 27th October 2012, 12:22 PM   #5
ruben alstad is offline ruben alstad  Norway
diyAudio Member
 
Join Date: Jun 2012
Location: Lillesand Aust-Agder
Quote:
Originally Posted by bigspeaker View Post
12ax7 will be better 12au7 to low if you are using it for guitar amp i buit such a amp with 12ax7 and it worked very well
thought guitar amplifiers ect was for another forum.
  Reply With Quote
Old 27th October 2012, 12:25 PM   #6
bigspeaker is offline bigspeaker  Australia
diyAudio Member
 
Join Date: Oct 2012
Quote:
Originally Posted by ruben alstad View Post
thought guitar amplifiers ect was for another forum.
12ax7 will work fine 3 12ax7 and your kt88's it will rock you have circuit
  Reply With Quote
Old 27th October 2012, 12:27 PM   #7
bigspeaker is offline bigspeaker  Australia
diyAudio Member
 
Join Date: Oct 2012
the circuit were to give an idea of how all the bit fit
  Reply With Quote
Old 27th October 2012, 01:00 PM   #8
ruben alstad is offline ruben alstad  Norway
diyAudio Member
 
Join Date: Jun 2012
Location: Lillesand Aust-Agder
Quote:
Originally Posted by bigspeaker View Post
12ax7 will work fine 3 12ax7 and your kt88's it will rock you have circuit
trying to pull off an octal tube only amplifier, a 6sn7 driver phase kt88 PPP stereo amplifier has being floating on my mind alot recently.
  Reply With Quote
Old 27th October 2012, 08:28 PM   #9
Chris Hornbeck is offline Chris Hornbeck  United States
diyAudio Member
 
Chris Hornbeck's Avatar
 
Join Date: May 2011
Location: Little Rock
Don't believe everything you read, even here. The 6SN7 is an excellent driver, even in the extreme case of triode connected output valves.

All good fortune,
Chris
  Reply With Quote
Old 28th October 2012, 08:34 AM   #10
multi is offline multi  Australia
diyAudio Member
 
Join Date: Jan 2011
GEC developed a circuit for Multiple Kt 88 using 6SN7's. The amp uses a 6SN7 cathode follower to drive the out put stage for low impedance drive.
The last tube you would want to use to drive KT88's or 6550's is a 12AX7 they are hi mu high plate resistance, high distortion tubes and no good as drivers, nothing like a 6SN7 which is low mu, low plate resistance, low distortion and excellent driver.
Can scan the circuit if any one interested but it is on the Net
Phil
  Reply With Quote

Reply


6sn7 driving Push Pull Parallel kt88's?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
Chinese amp: 2A3 6SN7 6SJ7 5Z5P push pull Alexontherocks Tubes / Valves 16 7th May 2013 04:37 AM
Push-Pull vs Push-Pull-Parallel rsumperl Tubes / Valves 8 10th July 2012 05:34 PM
VTV Push-Pull 6SN7/KT88 Amp: DIY or China? 88man Tubes / Valves 5 18th October 2009 02:27 PM
driving 845 push-pull with a signal from a 300B SE stage Antonio Tucci Tubes / Valves 1 20th February 2007 08:04 PM
modify parallel push-pull EL84 to single push-pull chungtat Tubes / Valves 12 3rd November 2005 11:25 PM


New To Site? Need Help?

All times are GMT. The time now is 09:20 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki