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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
"B-Stock Chassis"
Posted By ColeTone on 03/21/2017
We used to recycle them but I decided to start keeping the "still usable ones....

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"Mounting power transformer"
Posted By worrywort on 03/21/2017
Hello there.
I have chickened out and bought a kit for my first build.
It's a 5F1 circuit with pre-punched chassis and all components.
The instructions say to mount the power transformer "Undo bolt...

Discuss this entry
"Isolating power transformer from chassis?"
Posted By Alva Goldbook on 03/21/2017
So I'm working on a build and I'm using a small upright power transformer. It's an Edcore XPWR024. I was thinking of taking the mount off of it and just mount it lay down style, using the corner holes...

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"The Rabble-Rouser Build"
Posted By Buxton on 03/21/2017
I'm converting an old Hi-Fi amp to moderate output guitar amp. It has a pair of EL84 in the ouput section currently operating in ultralinear output with no global negative feedback and a pair of 12ax7...

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"need ideas for a 5150 type of sound"
Posted By Ericfx1984 on 03/20/2017
A local band recently played and purchased an amp I built and loved it. I was not trying to sell it... but when someone throws cash in your face it's hard to say no...

That being said they want m...

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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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