[UntilThen]

Ah yeah I was looking at it too quickly. They are indeed both 1960 - twins born 2 months apart.

Don't mind them being not so old. That's 59 years ago.

 

[JazzVinyl]

Once you've experience Yamamoto's sockets, it's hard to go back to other sockets. The grip is firm and tube insertion and extraction is so so smooth. This is a picture I took of a socket in Studio Six. I believe they are Yamamoto's socket or of a similar teflon material. Just so smooth and yet firm getting tubes in and out.

He who does not roll...does not need fancy sockets, right?

 

[UntilThen]

Examining Tesla EL12 spez again, the tube looks beautiful and even outclass the Telefunken EL12 spez in looks - IMO as usual . I have not been able to verify the tone though. That will have to wait till Berlin is build. Here is a picture of it taken some time ago. Tesla has black glass with chrome whilst Telefunken has grey glass. Telefunken's picture is taken from seller's listing.

 

[L0rdGwyn]

Are these tubes similar to the 6J5G? Same pinout?

Hey mordy - yes, the 6C5G and 6J5G are interchangeable. They have some small differences in their specifications, but are close enough to be considered direct substitutes. The bigger difference between them is the 6C5G has internal shielding that is tied to pin 1 while the shouldered 6J5G do not have shielding.

 

[UntilThen]

K is buying 6J5, 6C5 and L63 like I'm buying EL11s. Ensuring we have supplies for a custom build. That's good planning. What power tubes have you got in mind to pair with those lovely drivers K?

 

[L0rdGwyn]

Examining Tesla EL12 spez again, the tube looks beautiful and even outclass the Telefunken EL12 spez in looks - IMO as usual . I have not been able to verify the tone though. That will have to wait till Berlin is build. Here is a picture of it taken some time ago. Tesla has black glass with chrome whilst Telefunken has grey glass. Telefunken's picture is taken from seller's listing.

Tesla had an eye for design, here is a pair of rare NIB pinched waist 6CC42 I used to own, loved the sound of those little tubes, the logo, and their packaging

 

[leftside]

Hey @mordy how about the date codes on these EL12's?
https://www.ebay.com/itm/EL12-Speci...NIB-Pair-Tested-Matched-Datacode/273999353531

Edit: I've just seen your link, so let me try and figure it out.
http://www.audiotubes.com/teledate.htm

 

[mordy]

Hey mordy - yes, the 6C5G and 6J5G are interchangeable. They have some small differences in their specifications, but are close enough to be considered direct substitutes. The bigger difference between them is the 6C5G has internal shielding that is tied to pin 1 while the shouldered 6J5G do not have shielding.

Is there any advantage to the internal shielding?

 

[L0rdGwyn]

K is buying 6J5, 6C5 and L63 like I'm buying EL11s. Ensuring we have supplies for a custom build. That's good planning. What power tubes have you got in mind to pair with those lovely drivers K?

Yes, I love the 6J5! I would say it is top three if not number 1 for me in the GOTL as far as drivers go. The grey shouldered MOV L63 is incredible, as are the Fivre 6C5G...and the Visseaux 6J5G...and the Tung-Sol, and the RFT..and, and...

I can't say what the powers would be yet, I have some homework to do there. The 6V6 seems like an interesting option, it is widely available and flexible, those Fivres from Langrex have caught my eye. I am targeting mid 2020 though for this build, so there is time

Of course, Glenn's expert opinion will be a big factor, the amp builder knows best.

 

[L0rdGwyn]

Is there any advantage to the internal shielding?

In theory yes, less RFI, but I wouldn't know! My adapter does not have a pin 1, so the shielding is just there to be shiny and look pretty.

 

[mordy]

Hey @mordy how about the date codes on these EL12's?
https://www.ebay.com/itm/EL12-Speci...NIB-Pair-Tested-Matched-Datacode/273999353531

I am only guessing since usually the date codes of the early Telefunken tubes is found printed in white two letter designations at the base of the tube by the pins.
Anyhow here goes my guess:
U = Ulm
vp = August 1954 according to the chart under the letter V
03 - don't know

 

[UntilThen]

Hey @mordy how about the date codes on these EL12's?
https://www.ebay.com/itm/EL12-Speci...NIB-Pair-Tested-Matched-Datacode/273999353531

Edit: I've just seen your link, so let me try and figure it out.
http://www.audiotubes.com/teledate.htm

Is that yours? You're a tube collector leftside. Good hobby though. Better than collecting stamps.

 

[leftside]

Yes, I love the 6J5! I would say it is top three if not number 1 for me in the GOTL as far as drivers go. The grey shouldered MOV L63 is incredible, as are the Fivre 6C5G...and the Visseaux 6J5G...and the Tung-Sol, and the RFT..and, and...

I can't say what the powers would be yet, I have some homework to do there. The 6V6 seems like an interesting option, it is widely available and flexible, those Fivres from Langrex have caught my eye. I am targeting mid 2020 though for this build, so there is time

Of course, Glenn's expert opinion will be a big factor, the amp builder knows best.

This is the build I'm going for, and haven't changed my mind since coming up with the 6J5 + 6V6/EL34/KT66/KT77 idea. My only question to @2359glenn is 4 6V6/EL34/KT66/KT77 or 2 6V6/EL34/KT66/KT77, and whether it would be worthwhile to have a 6V6/EL34/KT66/KT77 selection switch?

 

[L0rdGwyn]

This is the build I'm going for, and haven't changed my mind since coming up with the 6J5 + 6V6/EL34/KT66/KT77 idea. My only question to @2359glenn is 4 6V6/EL34/KT66/KT77 or 2 6V6/EL34/KT66/KT77, and whether it would be worthwhile to have a 6V6/EL34/KT66/KT77 selection switch?

You know, as I was typing that, I was thinking "Isn't this what @leftside is doing exactly?". Sorry I am a copycat, I'll have to pick your brain and see how you like it.

 

[leftside]

Is that yours? You're a tube collector leftside. Good hobby though. Better than collecting stamps.

Not in my hands yet Seller accepted my offer for about the same price yours went for.