TV Horz. Output Tubes used as Output Audio - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

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
Reply
 
Thread Tools Search this Thread
Old 23rd August 2001, 06:53 AM   #1
ppl is offline ppl  United States
diyAudio Member
 
ppl's Avatar
 
Join Date: Apr 2001
Location: Seattle, WA U.S.A.
Have anyone Hear tried any of the TV type of Horizontal output Tubes like 12BQ7 TIA.
  Reply With Quote
Old 30th August 2001, 10:14 PM   #2
diyAudio Member
 
Join Date: Jul 2001
Location: Orleans, France
12BQ6 I suppose. 12BQ7 is an HF double triode.

You can see :

http://www.svetlana.com/docs/TechBul...hnoteNo33.html

Amplifier with 6KG6, similar tube, by Bob Danielak.

Regards, P.Lacombe
  Reply With Quote
Old 13th October 2001, 02:12 PM   #3
diyAudio Member
 
Join Date: Oct 2001
Default EL509

The sweep tubes are really excellent performers. This is particularly true for EL509/6KD6/6Pi45S. This seems to be the only such tube in current production. Extremely high emission current makes it possible to use this tube even in OTL amplifiers, and this is currently the best tube for such application. But it is better to use EL 509 with good output transformer in PP configuration. Look at http://www.cortmi.com.ua/omak.
Another example is 8417 tube. Quicksilver manufactured some quite good monoblocks using these tubes in 1970s.

  Reply With Quote
Old 8th December 2001, 06:31 PM   #4
R.I.P.
 
Join Date: Dec 2001
Location: Schaffhausen Switzerland
Denis posted:

Another example is 8417 tube. Quicksilver manufactured some quite good monoblocks using these tubes in 1970s.

Denis - my experience with the 8417 is 100% opposite to that of the Russki sweep tubes. The 8417 has to be the most UNRELIABLE output tube ever used in audio-good perhaps but UNRELIABLE!

While the EL509s are the most reliable I know.

Allen
  Reply With Quote
Old 9th December 2001, 12:08 AM   #5
diyAudio Member
 
Join Date: Oct 2001
Location: Melbourne, Australia

Yes I agree with Allen about 8417s in Quicksilver amps. Philips ECG tubes have less problems while GE tubes did not work well in these amps.

Mohan
  Reply With Quote
Old 10th December 2001, 12:56 PM   #6
diyAudio Member
 
Join Date: Oct 2001
Default EL509

Nothin to say about 8417 as the EL509 seems to be the only tube of such tupe currently manufactured. I use only EL509 produced in St. Petersburg by Svetlana, and I dare say this is simply excellent power pentode from any viewpoint. For example, it is possible not only to get about 40 watts of class A power from a PP pair of EL509s, but the transition from class A to class AB is smooth and does not add higher harminics to the distortion spectrum. Of course, it is possible to find similar modes of operation for other pentodes, but there always will be less power, even with 6550.
  Reply With Quote
Old 17th December 2001, 07:12 PM   #7
diyAudio Member
 
Join Date: Sep 2001
Location: Sth. Oz
Default tomcat

I seem to recall Tim De Paravinci had a schematic using this tube in Sound Practices some time ago... Food for thought, Hmmm?
tomcat
  Reply With Quote
Old 20th November 2005, 07:19 AM   #8
JesseG is offline JesseG  Canada
diyAudio Member
 
JesseG's Avatar
 
Join Date: Jul 2005
Location: New Westminster, BC
Ok, so has anyone got a link to a schematic using the 12BQ7?

I just found 10 of these in a junk shop and bought 'em 'cause they were NOS. Sure would be neat to find a use (audio) for 'em.

  Reply With Quote
Old 20th November 2005, 09:25 AM   #9
dhaen is offline dhaen  Europe
diyAudio Moderator Emeritus
 
dhaen's Avatar
 
Join Date: Jun 2002
Location: U.K.
PL519 P-P design thread

The EAR 859 is public, but is SE.
  Reply With Quote
Old 20th November 2005, 10:58 AM   #10
diyAudio Member
 
Geek's Avatar
 
Join Date: Sep 2004
Take a sweep tube and try it tied as a triode (g2 to plate) - you may never go back to "real" triodes
  Reply With Quote

Reply


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
Vertical deflection tubes for audio output? jane Tubes / Valves 59 8th April 2013 10:58 AM
Which of these output tubes? jnb Tubes / Valves 1 21st June 2007 03:49 PM
max. output for two 5881 tubes? tonskulus Tubes / Valves 7 21st January 2007 11:00 PM
Any other sub for KT 88 output tubes? Original Burnedfingers Tubes / Valves 13 22nd January 2005 10:28 PM
12b4 as PP output tubes andyjevans Tubes / Valves 3 7th January 2005 08:50 AM


New To Site? Need Help?

All times are GMT. The time now is 08:33 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2