Almost done, maybe 85%, working my way from output to input. Input stage is next.
L0rdGwyn's DIY Audio
- Thread starter L0rdGwyn
- Start date
whirlwind
Headphoneus Supremus
You are not messing around!
Nice chassis...nice and roomy
Thats a lot of soldering.
Nice chassis...nice and roomy
Thats a lot of soldering.
Yeah, it is a lot of soldering! I did some more but I think I am done for the today, I'll wrap it up tomorrow morning 
bcowen
Headphoneus Supremus
Very nice! And unless I miscounted, you're going to need 7 of these. Whew. Getting pricey.Almost done, maybe 85%, working my way from output to input. Input stage is next.
Very nice! And unless I miscounted, you're going to need 7 of these. Whew. Getting pricey.
LOL just five thanks very much, mains fuse, two transformer secondary fuses, and two cathode fuses on the 801A, a casual $800. For audio nirvana, it's worth it
Back at it this morning, going to try and finish before noon.
And the amp itself. Note that the grid caps leads were meant to be sleeved in paracord, but it did not arrive in time, so just bare cable jacket for now, but have to admit I think it looks good in black.
A2029
Member of the Trade: 1101 AudioFormerly known as swich401
Alright, it's done.
Circuit first...
And the amp itself. Note that the grid caps leads were meant to be sleeved in paracord, but it did not arrive in time, so just bare cable jacket for now, but have to admit I think it looks good in black.
Beautiful! I really dig the grey chassis, reminds me of old school military gear. Congrats on the build Keenan!
Galapac
1000+ Head-Fier
Call it the B-19 cause it’s the Bomb! Congrats! You always amaze me that you can put these together so fast with no issue.And the amp itself. Note that the grid caps leads were meant to be sleeved in paracord, but it did not arrive in time, so just bare cable jacket for now, but have to admit I think it looks good in black.
Thanks, Mischa! That's kinda what I was going for, sort of a Hickok TV-7D/U look, glad it comes across
Thank you sir. There is always at least one hiccup. This time it was underrating the negative supply secondary fuse for inrush, which had me searching for a short that didn't exist
increasing the rating slightly solved the problem. The trick to building amplifiers quickly is doing literally nothing else for three days.
I swapped out the Tung-Sol 6BX7 for some Japanese Toshibas. I have pretty much every type of 6BX7 under the sun from the Glenn OTL days, these were one of my favorites. The heaters have a very nice glow.
Is it too early to say whether you have achieved your design goals?
(Please don't paint it black).
(Please don't paint it black).
Mr Trev
Headphoneus Supremus
Agreed. That battleship grey looks awesome!
I would say the design goals have been achieved! Only able to listen for a few hours, night shift is a bummer, but of course this isn't the first time I've listened to this circuit. The sound is the best of the amplifiers I've designed, particularly the low end, really unlocks a new level of bass potential from my Snells.
So it's just lacking the paracord then?
Edit: Congratulations!!
Edit: Congratulations!!
Last edited:
