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Title: Good project that involves a 12ax7
Post by: rockgardenlove on April 17, 2006, 06:09:49 AM

So I have a spare 12ax7 that I took out of my amp, its not dead, I just got some better tubes. So of course, I'd like to tinker with it :)

Anyone know of any small single tube circuits that might be fun to build? I'm looking for something really simple, so I'm not overwhelmed with too much info, I'm new to tubes. Could I build a booster or something? I'd prefer to use mostly passive components, I don't really want to add a bunch of transistors and IC's and whatever.

Thanks!

Title: Re: Good project that involves a 12ax7
Post by: brett on April 17, 2006, 06:26:02 AM

Hi.
Check out the Real McTube, by the late, great Fred Nachbaur.
It uses a 12AX7 (or 12AT7) as a high-gain overdrive.
Not a simple build, but well worth it.
cheers

Title: Re: Good project that involves a 12ax7
Post by: rockgardenlove on April 18, 2006, 03:38:34 AM

Looks like a good project. Thanks.

Anyone know of anything else that might be a good newbie tube project?

Title: Re: Good project that involves a 12ax7
Post by: dano12 on April 18, 2006, 07:58:11 AM

The Shaka Tube looks like fun. Paul Marossy has some great build reports, layouts, etc. at:

http://www.diyguitarist.com/DIYStompboxes/Bulldog.htm (http://www.diyguitarist.com/DIYStompboxes/Bulldog.htm)

and

http://www.diyguitarist.com/DIYStompboxes/ST1590BB.htm (http://www.diyguitarist.com/DIYStompboxes/ST1590BB.htm)

Title: Re: Good project that involves a 12ax7
Post by: delbowski on April 18, 2006, 09:15:39 AM

maybe try a tube driver?

http://www.generalguitargadgets.com/index.php?option=content&task=view&id=89&Itemid=117 (http://www.generalguitargadgets.com/index.php?option=content&task=view&id=89&Itemid=117)

del

Title: Re: Good project that involves a 12ax7
Post by: jrc4558 on April 18, 2006, 12:01:23 PM

Tube driver sounds much better with a 12AY7.

Title: Re: Good project that involves a 12ax7
Post by: TELEFUNKON on April 18, 2006, 12:41:27 PM

I kinda like the transparancy of unlabeled 12AX7 s. :icon_razz:

Title: Re: Good project that involves a 12ax7
Post by: Connoisseur of Distortion on April 19, 2006, 03:35:08 AM

i have a small bin devoted to unused 12AX7s.

believe me, they just kinda pile up.

i never could get my tube driver running... bad mojo there, or something... spent 10 odd hours debugging! >:(

DIYstompboxes.com

DIY Stompboxes => Building your own stompbox => Topic started by: rockgardenlove on April 17, 2006, 06:09:49 AM