How to design input stage with specific input impedance/pot value - 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 16th November 2009, 09:37 PM   #1
diyAudio Member
 
Join Date: Nov 2007
Default How to design input stage with specific input impedance/pot value

Hello there,

Because of my DIY phono stage high Zout, I would like to optimise an amp input stage around a 220k or above value pot (it doesn't work well with my existing input stage). I also tried a cathode follower at the end of the RIAA preamp but still prefer my 2x6sl7 anode follower passive preamp "RCA style". With this one, I just miss the frequency extremes.

What are the rules to design an input stage (anode follower please) around such a value, or in fact around any input impedance value ?

Thanks in advance !
eric
  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
LM6171 input stage design capslock Solid State 18 10th March 2014 08:53 PM
Monlithic transistor IC for input stage design? Bitrex Solid State 16 24th June 2009 01:23 AM
unusual design of input stage Kuzmenko Solid State 18 15th January 2007 09:22 PM
help me design an input stage for 6b4G PP AudioGeek Tubes / Valves 11 2nd September 2005 07:48 AM
current bias j-fet input 2sk170 ,2sj74 at input stage YUTK Solid State 11 2nd June 2005 03:34 AM


New To Site? Need Help?

All times are GMT. The time now is 08:13 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