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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
"Hybrid 1 Watter (not mine)"
Posted By Douche Baggins on 08/21/2014
Did a YouTube search recently for 1 watt amps and this: [link] is among many posted.
Here: [link] ...

Discuss this entry
"OT impedance match"
Posted By BaltorTinazli on 08/21/2014
I have an OT which has 18,4k primary impedance instead of 22.5k with 8 ohm speaker. Is it ok or any disadvantages with it? I have bought five sets of them 4 years ago to build fireflys. But i cou...

Discuss this entry
"Dual Concentric 1 meg Pots?"
Posted By The Ballzz on 08/20/2014
Hi All,
This is my first post, so please be gentle. I have searched for 1 meg dual concentric pots and found them to generally be made of "UNOBTAINIUM", however, I have finally found a source to have...

Discuss this entry
"Passing the time"
Posted By Ken Graves on 08/19/2014
On my job I have to stay alert but there's not much activity for me. So, when I don't have a project going I need to keep my hands busy. So I bought some mild steel from Home Depot, some files and wet...

Discuss this entry
"P1 eXtreme transformer question"
Posted By aeronaut on 08/18/2014

Has anyone played around with other transformers for the P1 eXtreme? Thinking of doing it for a first build, and it looks like one can get an Edcor CXPP30-MS-5K for about the same price...

Discuss this entry
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Site News

2012-2-25: Winter is almost over. What's on your workbench?

2011-10-10: Some good discussions about LTSpice in the forums again, as well as suggestions on what all to do to a P1-eXtreme.

2011-10-10: What all can you do with a P1-extreme? check the forum

2011-10-7: Don't forget to like us on Facebook!

2011-08-11: Posted some Single-Ended Lead clips in the Classic Amp Projects->SEL section. Hundreds built but now we've got clips. Check out the archived projects section for more clips.

2010-10-22: Be sure to check out our discussion forum using the link on the left..

2009-07-01: 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...
* 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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