Easy & Safe & Good sounding gainclone tube buffer - 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 29th March 2009, 08:20 PM   #1
diyAudio Member
 
ionomolo's Avatar
 
Join Date: May 2007
Location: Los Angeles
Send a message via MSN to ionomolo
Default Easy & Safe & Good sounding gainclone tube buffer

I've just built this and i'm amazed at the sound. Sorry for the schematic, i would better have drawn it by hand, but i'm on a mac and have no capture software other than the awful McCad.

It is a millet-max tube stage with grid feedback. Sounds very, very good and runs on very, very low voltage. The tubeness is clearly audible but it has a much lower distortion than designs that use high voltage tubes operating on low voltage.

The sound is also much better than a cathode follower.

I use a separated power supply but using the same as the chipamp should work.

Advantages over common CF buffers:

Better sound

Safer operation (25V vs 60V)

You don't need an extra transformer for the B+ (You do need it for the B+)

The heather psu should be referenced to ground unless you are trying to build a radio. The heather voltage should be the one of the tube you use (I use the 12AE6A). I set the bias at 18V but you can play with this at your will. If you use the ECC86 you will probably want to run it at a higher current, place a trimpot there and a small resistor to read the current if you are planning to play a lot with it.

Do you know the best of all? It took 15 minutes for me to get it working! I have to admit i was in a hurry but you can make it in less than an hour.

It's really worth listening to it.

Enjoy!
Attached Files
File Type: pdf sch.pdf (30.4 KB, 387 views)
  Reply With Quote
Old 29th March 2009, 10:57 PM   #2
diyAudio Moderator Emeritus
 
Iain McNeill's Avatar
 
Join Date: Oct 2007
Location: Santa Cruz, California
...moved to the tubes forum...
  Reply With Quote
Old 30th March 2009, 12:41 AM   #3
diyAudio Member
 
ionomolo's Avatar
 
Join Date: May 2007
Location: Los Angeles
Send a message via MSN to ionomolo
Quote:
Originally posted by Iain McNeill
...moved to the tubes forum...

Thanks, although i belive that guys in the tubes forum are already mentalized for high voltages and hate gainclones.
  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
Easy inexpensive tube buffer ideas? nordhaven Tubes / Valves 6 10th February 2008 05:10 PM
Tube differential input/buffer /w opamp output gainclone aletheian Chip Amps 2 23rd August 2005 08:36 AM
Gainclone with tube buffer almu100 Chip Amps 2 20th February 2005 04:28 PM
Could a tube buffer be useful for a Non-Inverting Gainclone? Bas Horneman Chip Amps 42 3rd June 2004 09:40 PM


New To Site? Need Help?

All times are GMT. The time now is 01:42 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