The Amp Garage

And if you are in the New Jersey Princeton area and wanna stop by, hit me up. Let's get this amp up and running. jelle@welagen.com

I second what Ian said. In order to build any tube amp, its imperative to know the fundamentals of tube amp technology. Thevenin etc. While I applaud your desire to build an amp of this complexity, without having a grasp of the basic fundamentals, its like building a car without tires, and asking wh...

WhopperPlate wrote: ↑Thu Nov 16, 2023 11:07 pm

jelle wrote: ↑Tue Apr 30, 2013 11:42 pm Malmsteen in about one hour at Irving Plaza.

How the heck was that ?!

Freaking amazing, lots of notes though. And Marshall stacks, smoke and hair.

Hillsborough? You are very very local. Long time no see, last time was at Greg Buchalski's Ampfest. I sent a PM

Yes, pacific, jelle

Me: I should not have let you leave with your amp. This is where you screwed yourself. Learn, move on. We have all learned this lesson..... :oops: In terms of going forward, here is what i suggest; tell him to send the amp back in, if the repair you did actually failed, you will fix it. If its a new...

Alpha is 15% taper, jelle

Hi, thank you for taking up this task

Are you up to date with letting members in? I got an email today from someone who wants to join but is awaiting approval.

Jelle

Hi Mike, I have Dralorics, and I messaged you, Jelle

Sweet build!

Be careful with this here, the resistor will short once the conformal coating gives out. I would move it away from the nut. jelle

I got a few today and will do tests. They may be the same, jelle

Yea, simply use 20uF caps for each preamp node. My guess was that the dual 10uF cap was available, and Dumble used it. It works, but a single 20uF works and is what one would normally see. Other amps had dual 40uF for clean and OD. Maybe that's what he had available that day. 20uF works well. have f...

3 preamp tubes: this means either no: Cleans, OD, PI or loop. Take your pick, lol

The 100W ODS documented here (102, 124, and 183) all use 4k7 and 390 from the 4 ohm tap. A 50W adaptation would reduce the 4k7 to 3k3, or move the FB source the to the 8 ohm tap. Either way you will get the same level of NFB as the 100W. The resistor change results from using the calculation I post...