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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
"SE transformer as Push-Pull"
Posted By Odilon on 03/06/2015
Hi guys, I am laying around with two SE aoutput transformers for EL84 (15w rated each 5k pri and 0 -4 - 8 ohms out) May I connect two primaries in series and use them as a single push-pull transformer...

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"Intermittent Sound Cut Out"
Posted By lkrasner on 03/05/2015
I'm having an annoying issue in my P1ex-ish build.

Every once in a while, sound just fades out slowly. Almost as if the filaments just lost power (though they are still glowing). Usually after a mi...

Discuss this entry
"Doberman Music Firefly P2P Kit"
Posted By Groovenut on 03/05/2015
Hey all!

I have a Firefly kit that I purchased new from Chris a few years back that I never opened. I'm looking to sell it. I have it listed on eBay here [link]

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"6L6 October Stage"
Posted By GeoMan on 03/05/2015
I'd like to use 6L6s instead of KT77s in this build. I've been trying to do my homework and have only gotten myself more questions.

I thought I would need to change the OT, but it looks like the a...

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"October Stage PT"
Posted By GeoMan on 03/05/2015
I am beginning to think hard about building an October Stage amp. I've been shopping around looking at pieces and parts. The schematics specify a PT with 8A of heater current. I want to build this ...

Discuss this entry
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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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