Mineature Tubes - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs 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

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 22nd April 2011, 02:48 AM   #1
diyAudio Member
Join Date: May 2010
Default Mineature Tubes

Hello, I am looking to start a build for a small
  Reply With Quote
Old 22nd April 2011, 04:35 AM   #2
TheGimp is offline TheGimp  United States
diyAudio Member
TheGimp's Avatar
Join Date: Aug 2009
Location: Johnson City, TN
Buy Low, sell High.
  Reply With Quote
Old 22nd April 2011, 05:18 AM   #3
diyAudio Member
Join Date: May 2010
Umm.. I have no idea what happened to the body of my message so I will repeat it.

I am looking to start a build for a <25W headphone pre/amp. The project requires a small footprint so I am looking for tubes. So far I have found 6n16/17b. I would like to be able to set Trebble/Mid/Bass characteristics via potentiometers.

Can anybody recommend some good small tubes?
  Reply With Quote
Old 22nd April 2011, 08:51 AM   #4
diyAudio Member
mastodon's Avatar
Join Date: Jan 2011
I assume that's <25W total dissipation, and not output power.

Maybe something like this would be a nice start: Oatley K272 JAN 6418 Valve (Tube) Preamplifier / Headphone Amp Kit It's a hybrid design and lacks the tone controls though.
  Reply With Quote
Old 22nd April 2011, 08:07 PM   #5
piano3 is offline piano3  United Kingdom
diyAudio Member
Join Date: Aug 2010
Location: London,UK
I have seen somewhere a circuit for a headphone amp using directly heated,cheap and common 1P24B at output. The 2 subminiature tubes you mention are very suitable for gain stages.
  Reply With Quote
Old 24th April 2011, 05:14 AM   #6
diyAudio Member
Join Date: May 2010
Wow I have read a lot of web pages this weekend. Found quite a few designs and some new tubes such as PL504, 5672, 6418.

I have not done much tube building but I have a 12au7, 12ax7 and a 6v6 on hand I think I will toy with and see what results I get. I found the tube-town.net tube selector guide and it seems pretty handy and diyaudioprojects.com has some simple projects I am going to try out.

I need to learn how to read the tube sheets and properly bias the tubes mentioned above but the ECC81/2/3 tubes seem to be the best and cheapest to start with.

  Reply With Quote


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
Runaway tubes or tubes drawing excess current--baffling trombone Tubes / Valves 13 16th April 2011 11:27 AM
MC3500 with 807 tubes and modern driver tubes tryonziess Tubes / Valves 11 23rd February 2011 07:01 PM
FS: 2 Tung-sol 45 tubes, 2 Westinghouse 5u4gb tubes athos56 Swap Meet 0 3rd August 2010 11:18 PM
WTT: Various tubes for 6CA4/EZ81 rectifier tubes GordonW Swap Meet 4 27th August 2008 12:37 AM
CV428 tubes (Loktal 807) tubes FS mobyd Swap Meet 3 2nd January 2008 11:26 AM

New To Site? Need Help?

All times are GMT. The time now is 10:26 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2