2359glenn | studio
Nov 15, 2018 at 5:53 AM Post #23,342 of 39,934
Telefunken

Thanks. I don't have any Telefunkens, but I do have some that seem to have a similar construction.
Since they all seem to sound the same or very similar, I like the RCA, just because i am addicted to their glow.
I need to find a couple more sets for the upcoming OTL.

Love that these tubes are so cheap.
 
Nov 15, 2018 at 7:24 AM Post #23,343 of 39,934
Hey JV,

The c3gs with a six pack of GE 6BX7s really pack a punch on the HD650s. I can't imagine taking much more force! Which VT-231s are you using JV?

Hello PH...
Ken-Rad for VT-231
Using 6BL not 6BX, BL's even more gain than BX, have to turn the input down a bit not to have too much gain.

But that said...one of my absolute favorite combo's in the GOTL is:

Six pack 6BL7
and
ECC88 Amperex (Phillips) as driver

Just right, for my tastes/phones.
 
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Nov 15, 2018 at 11:01 AM Post #23,345 of 39,934
Hello PH...
Ken-Rad for VT-231
Using 6BL not 6BX, BL's even more gain than BX, have to turn the input down a bit not to have too much gain.

But that said...one of my absolute favorite combo's in the GOTL is:

Six pack 6BL7
and
ECC88 Amperex (Phillips) as driver

Just right, for my tastes/phones.

Yesterday I got into a roll frenzie and listened to all three of the Amperex 6922s I had. One is from Holland, the other two from the US but one is a pinched waist. While I really enjoyed he smoothness of the Holland (very liquid) it had a rolled off bottom end. I more enjoyed the US Amperex. Good taste in tubes JV.

Is the Ken-Rad VT231 the same as a Sylvania Badboy? I like that tube as well.
 
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Nov 15, 2018 at 1:33 PM Post #23,346 of 39,934
Thanks. I don't have any Telefunkens, but I do have some that seem to have a similar construction.
Since they all seem to sound the same or very similar, I like the RCA, just because i am addicted to their glow.
I need to find a couple more sets for the upcoming OTL.

Love that these tubes are so cheap.

I will send you a bunch of them really don't use them anymore and I have like 20 of them.
 
Nov 15, 2018 at 3:24 PM Post #23,347 of 39,934
Yesterday I got into a roll frenzie and listened to all three of the Amperex 6922s I had. One is from Holland, the other two from the US but one is a pinched waist. While I really enjoyed he smoothness of the Holland (very liquid) it had a rolled off bottom end. I more enjoyed the US Amperex. Good taste in tubes JV.

Is the Ken-Rad VT231 the same as a Sylvania Badboy? I like that tube as well.


The Ken Rad’s have pronounced bass and rolled off highs, which just happens to match well with the C3g’s that I own....

3396CE13-E6AA-4594-A0C6-1C4E93EC882A.jpeg


Interesting about your rolled off 6922 bass.
Like my ECC88 for the opposite reason...big fat bass :)

.
 
Nov 15, 2018 at 3:26 PM Post #23,348 of 39,934
The adapters are $25 each, including shipping. Each one is made to order. If you have any special requests he will accommodate you.

$25 for a custom made adapter is reasonable. To fit the c3g base is not easy. I'll try out the adapters from Mrs Xu first to see if the EL11s sound any different from what they are as dual in the 6sn7 slot.

I had the EL11s and 6bx7s in the OTL amp for 2 weeks already.
 
Nov 15, 2018 at 3:41 PM Post #23,349 of 39,934
$25 for a custom made adapter is reasonable. To fit the c3g base is not easy. I'll try out the adapters from Mrs Xu first to see if the EL11s sound any different from what they are as dual in the 6sn7 slot.

I had the EL11s and 6bx7s in the OTL amp for 2 weeks already.
According to Glenn the bias setting for the C3g should be closer to the bias of EL tubes than the bias for the 6SN7.
Ein_sof also can make C3g to EL3 adapters for the same price.
Did you try EL12N instead of EL11?
 
Nov 15, 2018 at 4:32 PM Post #23,350 of 39,934
Nov 15, 2018 at 4:35 PM Post #23,351 of 39,934
$25 for a custom made adapter is reasonable. To fit the c3g base is not easy. I'll try out the adapters from Mrs Xu first to see if the EL11s sound any different from what they are as dual in the 6sn7 slot.

I had the EL11s and 6bx7s in the OTL amp for 2 weeks already.

The EL11s should sound better in the C3g socket as long as she wired them straight through as a pentode.
And they are not triode wired like in a FA amp. Looking at the circuit board I see trace jumping a couple of pins maybe I am seeing something that isn't there.
 
Nov 15, 2018 at 5:09 PM Post #23,352 of 39,934
Going through junk looking for something else I found two of these tubes 95397. They look like a 9 pin tube in a Loctal adapter but they are not.
They are Loctal tubes Philips SQ tube special quality. Have no idea what the pin configuration is can't find anything.

95387 tube.jpeg
 
Nov 15, 2018 at 5:49 PM Post #23,355 of 39,934
Going through junk looking for something else I found two of these tubes 95397. They look like a 9 pin tube in a Loctal adapter but they are not.
They are Loctal tubes Philips SQ tube special quality. Have no idea what the pin configuration is can't find anything.


https://www.radiomuseum.org/tubes/tube_95397.html

http://www.vintageradio.nl/buizen/95397.htm

Same as this except Loctal Base:
https://www.radiomuseum.org/tubes/tube_e83f.html

"Special quality valve designed for stability and long life."

.
 
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