L0rdGwyn's DIY Audio
Jan 4, 2022 at 8:54 PM Post #3,767 of 6,831
Heater supply and B+ delay circuitry is up and running. Think that's where I'll leave it for tonight.

PXL_20220105_014805235-2.jpg

@jgwtriode looks like some text might be missing from your last post! (Edit: oh never mind, you saw). BTW, I have the feet for the red Airmid to replace those with missing O-rings. I will also be putting new gyrator PCBs in that amp before I send it to you, the most updated have an additional safety zener, better safe than sorry :)
 
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Jan 4, 2022 at 9:23 PM Post #3,768 of 6,831
Heater supply and B+ delay circuitry is up and running. Think that's where I'll leave it for tonight.



@jgwtriode looks like some text might be missing from your last post! (Edit: oh never mind, you saw). BTW, I have the feet for the red Airmid to replace those with missing O-rings. I will also be putting new gyrator PCBs in that amp before I send it to you, the most updated have an additional safety zener, better safe than sorry :)
Thanks so much Keenan, appreciate that. Looking forward to it. Will get another payment off to you around mid month and hopefully by Mid February depending. Otherwise will throw some tax return money at it.

jgwtriode
 
Jan 5, 2022 at 12:05 PM Post #3,769 of 6,831
Back at it this morning, almost done actually. All working as intended, DC operating points are dialed in.

Just need to do the input and output wiring, which won't take long, then put some feet on the bottom. But first, lunch!
 
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Jan 5, 2022 at 2:59 PM Post #3,770 of 6,831
All done, here is @pravous Airmid OTL in Anthracite Grey with dual mono Goldpoint attenuators.

PXL_20220105_194039336-2.jpg

PXL_20220105_194106925-2.jpg

PXL_20220105_194143948-2.jpg

And with some tubes, sort of a brutalist aesthetic with those Soviet tubes in.

PXL_20220105_194304213-2.jpg

PXL_20220105_194333084-2.jpg

Now for the burn in :gs1000smile: sounds good to me, and dead quiet. I kind of like the mono attenuators, really makes the amp dual mono from start to finish, pretty neat. Works great for channel balancing, @pravous.

PXL_20220105_195001213.NIGHT-2.jpg
 
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Jan 5, 2022 at 3:19 PM Post #3,771 of 6,831
All done, here is @pravous Airmid OTL in Anthracite Grey with dual mono Goldpoint attenuators.

PXL_20220105_194039336-2.jpg

PXL_20220105_194106925-2.jpg

PXL_20220105_194143948-2.jpg

And with some tubes, sort of a brutalist aesthetic with those Soviet tubes in.

PXL_20220105_194304213-2.jpg

PXL_20220105_194333084-2.jpg

Now for the burn in :gs1000smile: sounds good to me, and dead quiet. I kind of like the mono attenuators, really makes the amp dual mono from start to finish, pretty neat. Works great for channel balancing, @pravous.

PXL_20220105_195001213.NIGHT-2.jpg
Lovely.
The second tube amp I owned was the La Figaro 339, which is also a dual mono design. If I ever have another custom amp built, I might go in that direction again.
 
Jan 5, 2022 at 4:19 PM Post #3,775 of 6,831
It's a great looking amp. But I don't see a tube rectifier, C3g sockets and and one 6SN7 socket with 6/12/24 volts? So I don't think it's finished? Is it? lol :)

Lol I see what you did there :) different from the GOTL in a whole lot of ways.
 
Jan 5, 2022 at 4:48 PM Post #3,777 of 6,831
As far as the dual mono goes, I have a slight hearing imbalance due to a career in the trades. In short hearing in my left ear is weaker than the right. I figured with dual mono I could adjust to what sounds right to me. Might also be useful for an unbalanced set of tubes as well. Regardless should be a big upgrade from my current self built BHC. Seems I am out of the greys so heres a picture of my current set up.

image7.jpeg


And a close up of the 7802wb I just aquired.

image2.jpeg
 
Jan 5, 2022 at 4:54 PM Post #3,778 of 6,831
As far as the dual mono goes, I have a slight hearing imbalance due to a career in the trades. In short hearing in my left ear is weaker than the right. I figured with dual mono I could adjust to what sounds right to me. Might also be useful for an unbalanced set of tubes as well. Regardless should be a big upgrade from my current self built BHC. Seems I am out of the greys so heres a picture of my current set up.



And a close up of the 7802wb I just aquired.


Looks nice! That is one rare tube. If you can snag a second one, they are excellent in this OTL.

I am listening with the HD650 right now, which I think is your headphone @pravous , pairs very well, I think you will enjoy it.
 
Jan 5, 2022 at 5:06 PM Post #3,779 of 6,831
My set up is pretty simply. Flac>Node 2i>BHC>HD650. Have some upgrades planned for the future but I want to wait till things settle down so I can try the amp/tubes I like with some other headphones and then probably a new DAC.
 
Jan 5, 2022 at 5:10 PM Post #3,780 of 6,831
My set up is pretty simply. Flac>Node 2i>BHC>HD650. Have some upgrades planned for the future but I want to wait till things settle down so I can try the amp/tubes I like with some other headphones and then probably a new DAC.

Nice, I have a Node 2 up in my bedroom setup, its very convenient. Great feature is it has digital outputs, so you can pair a new DAC with it whenever you decide to upgrade but keep the convenience of the streamer.
 

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