The Amp Garage

Ala-Ka-BLAMMMMMMMM!

Space Ace Forever

Ten Over wrote: ↑Thu Apr 14, 2022 9:25 pm Here is one for 300V and 220k grid leaks. Swings 60Vp in both directions, draws 1.18mA.
Cathodyne LND150 Draal.png

Thanks Ten Over - just what I was looking for!

I need some guidance in utilizing the LND150 mosfet as the phase inverter in my cathode biased Harvard style amp. My B+ is around 300v. I love tubes but I am open to experiment as I have a few of these in my parts bin. Here are a couple of them at 350V. I can re-design these for 300V and 220k grid ...

I need some guidance in utilizing the LND150 mosfet as the phase inverter in my cathode biased Harvard style amp. My B+ is around 300v. I love tubes but I am open to experiment as I have a few of these in my parts bin.

I bought a bunch of russian military tubes quite a while back when they were dirt cheap. I bought 100 of each. 6n1p-ev 6dj8 6n2p-ev a 6 volt 12ax7 6p1p-ev 6aq5 or 6v6 6fp3 ecl82 6bm8 50 each of 6p14-ev el84 pin compatible 6p15-ev sv83 6p3s-e 5881/6l6gc 1 6n2p and 2 6f3p make a really nice low watt ...

I'm keeping the set. They're just spares anyway. And I found a vendor that has unmatched tubes of the same type for a reasonable price, and bought three on the chance that one will match up well enough. It's not like tight tube matching is actually a requirement when the sound of slightly mismatche...

Welp, I guess that tube reverb build will be on hold for me. I'll play surf in the tub for now.

The 600 ohm tank was from a different abandoned project and I wanted to see if I could keep it from gathering dust on the shelf of misfit projects. Ideally, it seems the old standby, 6G15 unit with 8 ohm tank is the logical direction. But dang it, part of me says: try something different. While I do...

didit wrote: ↑Fri Dec 10, 2021 5:39 pm Hello --

You may find this article below on a constant-current capacitive-coupled reverb design to be helpful:

http://www.channelroadamps.com/articles/reverb_driver/

Best .. Ian

Definitely looks interesting! I know I have a small stash of those old tv tubes in my man-cave.

Gotcha - cap coupled is the way to go with these Hi Z tanks. Much appreciated!

Hi, first post although I've been a lurker for a while. I have a MOD 4EB3C1B 600 ohm tank and wanted to know if it's possible to utilize it in a 6g15 circuit? Is there even a 600 ohm transformer available for such a silly idea? Are my only options a transformer less drive setup or obviously getting ...