Ok. I understood. I have never used EM84. I usualy use tube from USSR especially military tube. They are reliable and not prone to failure. Let's try 6E3P. It is analogies of EM84.
Hi
Nice build
Those at the middle are caps?
Do you care to share the schematics, please
Greetings
Whoa, please do tell exactly what are these shiny thingies in
the middle.!.!
i presume some fany capacitors, that cost you a fortune...
...but they look absolute amazing !!
Wow, those cap covers (if that's what they are) turn your amp into a very nice and interesting piece. Cheers!
Many thanks for the compliments, gentlemen.
The shiny thingies in the middle are indeed capacitors. Expensive? No, just your run of the mill 50µF motor runs. The capacitors tend to be a bit aesthetically challenged off the shelf, but a length of marine grade brass and a lathe goes a long way.
The schematic is really nothing very special. It's basically the JE Labs 300B with a few little mods. SS rectifier, different operating point (350V 60mA @ 3300Ω) and the super sweet DHT regulators by Rod Coleman. The power transformer is mounted in a separate box with an isolating transformer and a mains filter I happened to have in my scrap box.
It's really pretty much a scrap box build, and many of the components inside have been used several times. I used what I happened to have. I'll post a picture of the guts later. I still need to mount larger heatsinks for the DHT regulators. The ones I made run a bit too hot as it is.
The shiny thingies in the middle are indeed capacitors. Expensive? No, just your run of the mill 50µF motor runs. The capacitors tend to be a bit aesthetically challenged off the shelf, but a length of marine grade brass and a lathe goes a long way.
The schematic is really nothing very special. It's basically the JE Labs 300B with a few little mods. SS rectifier, different operating point (350V 60mA @ 3300Ω) and the super sweet DHT regulators by Rod Coleman. The power transformer is mounted in a separate box with an isolating transformer and a mains filter I happened to have in my scrap box.
It's really pretty much a scrap box build, and many of the components inside have been used several times. I used what I happened to have. I'll post a picture of the guts later. I still need to mount larger heatsinks for the DHT regulators. The ones I made run a bit too hot as it is.
I really like your sense of style. It looks sophisticated in a Steam Punk sort of way. Do you have pix of the build???
Thank you. The steampunkish appearance wasn't planned. It just sort of turned out that way. I work with brass a lot and I have a bunch of scrap pieces, so I decided to see what they'll look like in real life. Not bad, I think. Most of the vinyl wraps I've seen are pretty cheesy, but I really think they hit jackpot with this faux antique leather texture.
Anyway, here's a shot from the interior. Still a little cleanup to do and it's not quite as clean and neat as I would like it to be, but whatever. I'll live.
I guess sometimes procrastinating is worth it.
Anyway, here's a shot from the interior. Still a little cleanup to do and it's not quite as clean and neat as I would like it to be, but whatever. I'll live.
I guess sometimes procrastinating is worth it.
Attachments
This is my first amplifier build. There is actually another power supply choke and filament transformers underneath.
Tube compliment Two 6DA4 One 7F8 Two 45 or 2a3.
Currently running National Union 245 Globes.
Next projects are helping a friend build a 304TL amp. I am not the lead on that one just labor lol.... Also going to build a pair of Brook 12A clones.
The projects on these pages are amazing and inspiring.
Tube compliment Two 6DA4 One 7F8 Two 45 or 2a3.
Currently running National Union 245 Globes.
Next projects are helping a friend build a 304TL amp. I am not the lead on that one just labor lol.... Also going to build a pair of Brook 12A clones.
The projects on these pages are amazing and inspiring.
aye, sovteks
The sovteks are affordable and rugged. I used it for testing once the build was complete. When it was stable and sounding good I switched to globe NX-245 but now I am running Emission Labs mesh 45. EML is interesting.
