Darkvoice 336i & 336SE Tuberolling PartII
Feb 6, 2021 at 2:20 PM Post #6,541 of 14,501
Feb 6, 2021 at 2:22 PM Post #6,542 of 14,501
Someone please buy these, Tung-Sol 6J5G Pair.
I have the GT version and they do sound great. It’s a rare tube to see pop up. Although, another pair recently sold for $80-$90. This pair, one is labeled VT-94A and the other is standard label. It won’t matter though as far as matching internally goes. They seem to be about the same year. Early 40s.

If @bcowen did not put telefunken 12au7 smooth plates on my radar I might have taken a flyer on these...
 
Feb 6, 2021 at 4:08 PM Post #6,543 of 14,501
My tubes came in today! I am still waiting on the adapter for the Sylvania tubes but thats ok, since I was a little to quick on the draw (very excited) I didnt notice that Drop wont even start shipping the DarkVoice's until the end of March lol. However I greatly appreciate all the help provided in this thread, one day soon I hope to enjoy real tube goodness, until then I will keep using my Vali 2+ as its still very enjoyable.
Tubes.png
 
Feb 6, 2021 at 4:31 PM Post #6,544 of 14,501
If @bcowen did not put telefunken 12au7 smooth plates on my radar I might have taken a flyer on these...

Geeeez. How many times do I have to tell you guys that if someone needs blaming for something, it's @JKDJedi . I'm always innocent. :laughing:
 
Feb 6, 2021 at 6:49 PM Post #6,545 of 14,501
Still have the GE JAN (86-30) in but tonight it's accompanied by the Silvertone. I haven't popped this one in for a while and I don't know why - it's a great tube. Last time I posted about it the suggestion was it was a rebranded Sylvania.

I've found the GE JAN to be the soundstage king which makes it a nice companion to this Silvertone which I find to be very upfront. I'm losing some of the clarity that I enjoy with other combinations but as far as non-critical listening goes, this is a nice setup.
 

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Feb 6, 2021 at 8:45 PM Post #6,547 of 14,501
This one was done by @Absoltuion . The green text is the components spec voltage, and the yellow is his measured voltage (and red text for resistors).

DV Voltages Absoltuion.jpg
Since this photo has the LED mod does anyone mind confirming that the two resistors typically going to the pins at 5 o'clock and 7 o'clock are 1m ohm like the one at the very bottom?
 
Feb 6, 2021 at 10:25 PM Post #6,548 of 14,501
Since this photo has the LED mod does anyone mind confirming that the two resistors typically going to the pins at 5 o'clock and 7 o'clock are 1m ohm like the one at the very bottom?

The cathode resistors on pins 3 and 6 of the 6SN7 socket are 1k, not 1 meg.
 
Feb 6, 2021 at 10:32 PM Post #6,549 of 14,501
The cathode resistors on pins 3 and 6 of the 6SN7 socket are 1k, not 1 meg.
Oh. Is the photo I’ve been using as a reference wrong?
 
Feb 6, 2021 at 10:46 PM Post #6,550 of 14,501
Oh. Is the photo I’ve been using as a reference wrong?

I don't know. What photo are you using? If it's the one from your last post, the cathode resistors were replaced with the LED's in that photo and there is no resistor value shown. If you're putting LED's in to bias the cathodes (pins 3 and 6), the resistors need to be removed. If you're swapping resistors with a different type, the resistance value still needs to be 1k. The 1 meg resistors are the grid resistors on pins 1 and 4, and the anode (plate) resistors on pins 2 and 5 are 30k.
 
Feb 6, 2021 at 11:28 PM Post #6,551 of 14,501
Sounds quite nice, actually. It didn't light my fire when I tried it in the Lyr 3. Not bad sounding in any way, just didn't get my groove-thang going. But I'm liking a lot about it in the Darkvoice right now. Not sure the graphite Chatham 6080 is the best mate for it...need to roll around a Mullard 6080 and Chatham 6AS7G and see how they pair up. I have some Valvo ECC40's too that I *really* didn't like in the Lyr 3, but it may be an entirely different story with them in the DV so I'll give them a re-whirl.

And then I spied some ECC84's sitting next to the ECC40's. Would you believe that I don't have a 6SN7 adapter for those? Sheeez. I have a 6922 adapter for them, but no 6SN7 adapter. I'm pretty ashamed of myself. :smile:
Well, what about a 6922->6SN7 adapter in between? 🤷🏻
 
Feb 7, 2021 at 12:09 PM Post #6,553 of 14,501
I don't know. What photo are you using? If it's the one from your last post, the cathode resistors were replaced with the LED's in that photo and there is no resistor value shown. If you're putting LED's in to bias the cathodes (pins 3 and 6), the resistors need to be removed. If you're swapping resistors with a different type, the resistance value still needs to be 1k. The 1 meg resistors are the grid resistors on pins 1 and 4, and the anode (plate) resistors on pins 2 and 5 are 30k.
Ohhhhhhh okay. That's got me there. Yeah, I was not sure if the 3 and 6 resistors (since I did the Fitz mod rather than the LED one) were supposed to be the same value as the 1 and 4 resistors. Thank you for clarifying.
 
Feb 7, 2021 at 12:45 PM Post #6,554 of 14,501
Good thing I didn’t start soldering before getting everything in place. Just in time too, those Foton 6N8Ses and a CBS 5692 are arriving tomorrow!
 
Feb 7, 2021 at 3:06 PM Post #6,555 of 14,501
I know it's a little bit of the topic, but as I know that the people here are very cool, I'll ask the question here.

Could you point me to a quality power cord and RCA cable that does not empty my wallet.

I don't know anything about cables and any help is welcome.
 

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