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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
"No Bass amps?"
Posted By Len Ovens on 01/26/2015
After going through many of the threads in this area, it seems that the general feeling is tube for guitar and solid state for bass.

In truth I run my bass clean all the time right now... because i...

Discuss this entry
"Amp hums when I don't touch it but it doesn't know the tune."
Posted By GreenCanoe on 01/26/2015
I built an Ampeg B15n (1968 version, Fixed bias)into an 18 Marshall chassis. I'm having a problem in that when I do not touch the strings or the chassis the amp has a buzz. None of the other amps I'v...

Discuss this entry
"Marshall 50 watt build"
Posted By blindbrett on 01/26/2015
I am planning to build a Marshall jcm 800 with kt66 power tubes and was hoping to get some advice regarding specs needed for the power and output transformers. I don't want to risk using a power trans...

Discuss this entry
"Electrodynamic to permanent magnet speaker conversion?"
Posted By Alanh on 01/26/2015
Can someone tell me how to do an Electrodynamic to permanent magnet speaker conversion?
I have a 1947 Harmony model 200 and the ED speaker is shot. I would like to convert it over to permanent. My sc...

Discuss this entry
"Yey!"
Posted By dsmith on 01/26/2015
Yey! ax84 is back....

Discuss this entry
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Updates: Tue, Jan 27th, 2015 @ 03:27:55
Updates to pages about

'news'

have been completed.
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...
* Active Threads
* 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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For information about using the AX84® trademark, project names and designs, click here