Class A SET preamp, help - 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 28th May 2006, 05:23 PM   #1
diyAudio Member
 
Join Date: May 2006
Question Class A SET preamp, help

Hi guys,

I would like to start a new porject. I want to build a line preamp with two 6922 tubes, it shoud be a low gain design (about 11-15db) with a class A single ended topology. It should be able to drive a solid state amp with input impedence around 55KOhm.

Does anyobdy point me to some schematics or porject? What is the best commercial preamp having this design?

Bye for now,
Cukkurullo
  Reply With Quote
Old 28th May 2006, 06:10 PM   #2
diyAudio Member
 
Join Date: Apr 2004
Location: Monroe Township, NJ
The mu of the 6922 is 33. That's 5X the gain you want. You could construct a circuit that uses loop NFB. Somehow, I get the feeling that's not where you want to go. There are solutions using transformers that don't use loop NFB.

Does the tube absolutely have to be the 6922? If you search, you will find several circuits that employ the 12B4. Without fuss or muss, a 12B4 based design would do exactly what you want.
__________________
Eli D.
  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
Complementary Class A Preamp using BC368-369 lineup Solid State 16 16th September 2010 07:22 AM
DIY Class-A mic-preamp AudioAngel Solid State 15 4th December 2009 03:28 PM
Class D preamp ?? TNT Class D 41 12th March 2009 06:37 PM
Passive Preamp With Class-D JimOfOakCreek Class D 10 23rd July 2007 02:35 PM
my class a preamp evilspirit Solid State 10 30th June 2004 07:17 PM


New To Site? Need Help?

All times are GMT. The time now is 11:48 PM.


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