All Activity
- Today
-
-
And yet another belated birthday greeting....don't let those pussies take your presents!!
-
Another belated birthday greeting in the retread thread, Marc! Cheers!
- Yesterday
-
Happy Birthday!
-
Happy Birthday, Marc! Hope it's been a good one.
-
Megatron Electrostatic Headphone Amplifier
simmconn replied to kevin gilmore's topic in Do It Yourself
Adjust R31 or R32 for 2.5V, and then adjust R33 or R34 for 5V. They should be independent as long as you do it in that order. Take into account of the wire resistance when measuring voltage especially in the 2.5A case, when you get into mV of accuracy. -
Returning To Myself by Brandi Carlile (2025) https://open.qobuz.com/album/r8nx9cretutcb Example: Did know this was coming - glad it is here...
-
Happy Birthday!
-
Megatron Electrostatic Headphone Amplifier
JoaMat replied to kevin gilmore's topic in Do It Yourself
The one-trimmer control board above adjusted voltage for both 2A3 and 300B at the same time. No way to adjust voltage for one without effecting the other. I assumed that it should be possible to set voltages for one tube and have the other unaffected. But as my brain isn’t as fast as the two comparators in LM2903 I made a test board with seven trimmers. After some trimming back and forth I found one trimmer that adjusted voltage for both tubes and an another that just affected 300B, So, next is a two-trimmer control board, same size as the one-trimmer. If you don’t understand how a circuit works, the trial-and-error method might help you. -
Hey, hey, wanna waste some time with me?
-
Cheers - Happy Birthday Marc -
-
Happy Birthday Marc!
-
Happy birthday, Marc!
-
Thanks all! It was a nice day, someone tried to beat me to the presents though: IMG_4844.mov
-
Happy Birthday !!!
-
Happy Birthday Marc!
-
Happy Birthday!
-
Happy belated birthday, Marc! (party favour noise)
-
Happy Birthday!
-
Happy Birthday!!
-
Happy another trip around the sun!
-
The Official Head-Case Photography Thread.
blessingx replied to Knuckledragger's topic in Miscellaneous
In the consumerism thread, I mentioned tracking down a copy of The Pillar by Stephen Gill, a self-published photobook that made waves a few years ago. Thought some of you may enjoy a few shots also. https://www.newyorker.com/culture/photo-booth/karl-ove-knausgaard-on-stephen-gills-bird-images-in-the-pillar https://www.1854.photography/2019/07/the-pillar-by-stephen-gill/ https://www.photohastings.org/book-review-the-pillar-by-stephen-gill/ - Last week
-
Great video for all you Stax fans. Very rare insight which actually shows proper parts of the factory
-
The Official Head-Case Photography Thread.
blessingx replied to Knuckledragger's topic in Miscellaneous
Need time to setup the GoFundMe -
The Official Head-Case Photography Thread.
Grahame replied to Knuckledragger's topic in Miscellaneous
So when are you getting one, Ric?
