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Welcome to AX84® the base camp for tube (valve) electronics hobbyists.

AX84 exists to provide:

1) A great environment to learn about music-related electronics in general. AX84 is a place where those with experience are interested in helping diligent beginners who are willing to do their homework.

2) A place where those with more experience can field their ideas to peers and get useful feedback.

3) An environment that respects the past, but is not enslaved by it. INNOVATION IS GOOD (and it didn't die in the 1950s.) There are new things under the sun every day. Move the ball forward!

Our HUGE discussion area is under 'Discussion Forum' to your left.

We are hard at work improving the site- check back often!

Recent Forum Threads
"Getting Ready to Build"
Posted By Tim Mc on 10/24/2014
I'm stoked. Yesterday I received a message that parts for my P1-eX have shipped. This will be my first tube amplifier. Years back I earned a living as an electronics tech and even though that was all ...

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"design around ignorance"
Posted By Kursad K on 10/24/2014
OK, this is off topic:


It says you cannot use %100 pure antifreeze because it is a poor heat conductor and the maximum amount o...

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"AX84 1x12 Tools Needed"
Posted By ledzepp007 on 10/23/2014
Hi all,

I apologize if this has been discussed (I have not found it through the search). I am just getting started with this and I thought I'd start with the woodworking side of things (speaker cab...

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"loose farty bass"
Posted By bullpeters on 10/22/2014
I got loose loose farty bass in my build. It seems I am not the only one.I have read Lots of threads lots of proposed solutions but no posts that I could see with a solution.
I have listened to the ...

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"Adventures in Digital Control"
Posted By Chris Hurley on 10/22/2014
As some of you know, I've been thinking about making an amp or preamp with some amount of digital controls for a while. I certainly enjoy the traditional feel of an amp with regular knobs but I also ...

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Site News

2014-10-21: Be sure to check out our discussion forum using the link on the left..

2014-10-20: The Treasure Fleet is on the way to Rio De La Hacha with a fortune in gold!

We're looking for media clips of recent builds... please stop by the forum and respond to the thread.

2008-10-4: Archived Projects section is functional again.

2008-9-18: RSS Feeds for the forum have been up for a while, but not advertised...
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2008-6-26: Want to participate in our discussion forums? You are welcome to read and lurk as you like. If you think you'd like to post with regularity, please sign up for an account.

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