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Welcome

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
"Anybody with 6-8 inch guitar speaker cabs (sealed ported)"
Posted By sburck on 08/28/2015
Hello,

So I have a dilemma - my ax84 1x12 is way too loud for a bedroom/apartment amp regardless of wattage. It simply moves too much air. Lower power amps (like my ax84 HO) won't push nearly the l...

Discuss this entry
"SEL PT options help."
Posted By billpol66 on 08/27/2015

Hi folks , Was wondering if this CT PT will work for an SEL , I'm just not sure about the 6.3@ 2A part. If not is tbere a list of usable sets other then the Hammonds . I am not looking for output ...

Discuss this entry
"LND150 implementation"
Posted By boblove on 08/27/2015
I'm looking to use a transistor based gain stage for a clean boost prior to a tube based gain stage and while I've been on this forum for several years and have successfully built several amps, I'm st...

Discuss this entry
"Short "How Tubes Work" Video"
Posted By robrob on 08/24/2015
I edited and annotated the original 1943 film "Electronics at Work" to create a 3.5 minute video that has pretty good animations which show how electrons flow through vacuum tubes to amplify signals a...

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"UberSEL PS - is it a regulated PS?"
Posted By Denny Gracey on 08/23/2015
I've been reading up on regulated power supplies, mostly in pursuit of minimizing noise in a my UHG build and of course expanding learning. I've found references on the forum to regulated PS schematic...

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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!


20014-10-20:
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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* New Threads
* Recent Posts

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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