[hypnos1]

  Oh, sorry, I forgot your Elise 'SE' hadn't arrived yet. Well you may just have to help the missus with the Christmas shopping as I did today and now my back is aching again.
 
EDIT: If the EL11 works well maybe I should ask Mrs X if she can make a dual adapter-but better wait and see what the single tube sounds like first.

 
Please don't mention "Christmas Shopping"...the walls have ears...AND eyes lol!!

 
And yeah, best to see whether the EL11 is in fact any different to the EL3N...but I must admit, the "German Steel" base does look much more user- friendly LOL!

...and those pins are built like tanks!

. Can't wait to hear your impressions...

 

[HOWIE13]

   
Please don't mention "Christmas Shopping"...the walls have ears...AND eyes lol!!

 
And yeah, best to see whether the EL11 is in fact any different to the EL3N...but I must admit, the "German Steel" base does look much more user- friendly LOL!

...and those pins are built like tanks!

. Can't wait to hear your impressions...

 
I'll try and have a good listen tomorrow and Saturday. We have a couple coming for dinner Saturday night, which is likely to be a boozy affair, so hopefully I'll be ready to post before 7.30 pm. 
 
What I can say already is the adapter is very easy to use, so much so it's possible to tube roll without taking the adapter out of Elise. The tube just slips in and out like a well oiled piston.
 
Sound wise- they work, but I've literally only listened for a few moments or so to check the tubes were okay. 

 

[hypnos1]

   
I'll try and have a good listen tomorrow and Saturday. We have a couple coming for dinner Saturday night, which is likely to be a boozy affair, so hopefully I'll be ready to post before 7.30 pm. 
 
What I can say already is the adapter is very easy to use, so much so it's possible to tube roll without taking the adapter out of Elise. The tube just slips in and out like a well oiled piston.
 
Sound wise- they work, but I've literally only listened for a few moments or so to check the tubes were okay. 

 
And don't forget those photos, lol!

 

[HOWIE13]

   
And don't forget those photos, lol!

 
LOL -I never realised this thread would be such hard work 

 

[hypnos1]

   
LOL -I never realised this thread would be such hard work 

 
You're learning, H13!

 

[Spork67]

If EL11 has twice the gain of EL3N, why would it need a "double adapter" to work as a power tube for Elise?
Or am I missing something?
 
The "six pack" sound, without the ungainly looking dual adapters would be nice.
 
I'm still enjoying Elise vicariously through you guys - and almost daily can see the $ I'm saving not "having" to try this tube with that adapter...
I should start banking all that $$$ ready for Elise SE to be offered to the public. 

 

[HOWIE13]

  If EL11 has twice the gain of EL3N, why would it need a "double adapter" to work as a power tube for Elise?
Or am I missing something?
 
The "six pack" sound, without the ungainly looking dual adapters would be nice.
 
I'm still enjoying Elise vicariously through you guys - and almost daily can see the $ I'm saving not "having" to try this tube with that adapter...
I should start banking all that $$$ ready for Elise SE to be offered to the public. 

 
Absolutely correct-but EL11 has a similar gain to EL3N and I was speculating the dual power adapter for the EL11, not EL12, which is the higher gain tube.

 

[mordy]

Hi pct,
 
Same feeling here - finally, finally got the ultimate EL3N/GEC6AS7 set-up and .........boom!  Back to the drawing board.......
 
But I am playing a game called Follow John (or Colin). Have to see how things pan out, or rather, mesh out lol.......

 

[pctazhp]

  Hi pct,
 
Same feeling here - finally, finally got the ultimate EL3N/GEC6AS7 set-up and .........boom!  Back to the drawing board.......
 
But I am playing a game called Follow John (or Colin). Have to see how things pan out, or rather, mesh out lol.......

Mordy:  Are we crazy OR are we crazy??? Yes. We are crazy!!!!

 
Speaking of crazy, my all time favorite recording artist (RIP)
 

 

[mordy]

Tried to find out the amplification factor of the EL12 tube but couldn't from the spec sheets from Valvo, Telefunken and RFT, but my German is not the best. (What is Klirrfaktor?)
 
In any case, these tubes draw 1.2A so using them as drivers would be a problem with 2.5A power tubes  (total 7.4A  which is above the recommended total of 6.8A)
 
Used as dual power tubes would not be a problem. If you have a dual octal adapter, two individual EL12 adapters will fit easily on them in case a dual EL12 adapter isn't available.

 

[Oskari]

Tried to find out the amplification factor of the EL12 tube but couldn't from the spec sheets from Valvo, Telefunken and RFT, but my German is not the best. (What is Klirrfaktor?)

Finding data as a triode is a problem.

Klirrfaktor is harmonic distortion. The interesting value should be the transconductance, Steilheit.

My understanding is limited, so I won't even try to explain.

• http://www.r-type.org/addtext/add002.htm

Google away and you should find more about gain and transconductance.

 

[mordy]

Hi Oskari,
 
Thanks for the Steilheit!
 
The Steilheit (amplification factor) of an EL12 tube is 15 . Compare this to 6AS7/6080 - 2, and 5998 - 5. 
 
The EL11 draws 0.9A and has an amplification factor of 9
 
The amplification factor of a 6SN7 is 20.
 
Don't know how this translates sound wise in the Elise. 
 
https://frank.pocnet.net/sheets/082/e/EL12.pdf
 
Was even able to find a spec sheet for the EL3N - looks like the amplification factor (S) is 9.
 
 
https://frank.pocnet.net/sheets/030/e/EL3N.pdf
 
Thanks for your help
 
PS: Assuming the above tubes to be pentodes, how do the values correspond when used in triode mode? (2359glenn?)

 

[HOWIE13]

Sometimes you can identify the amplification factor when trying to decipher tube data written in a foreign language by looking for the number with no unit.

 

[hypnos1]

  Hi pct,
 
Same feeling here - finally, finally got the ultimate EL3N/GEC6AS7 set-up and .........boom!  Back to the drawing board.......
 
But I am playing a game called Follow John (or Colin). Have to see how things pan out, or rather, mesh out lol.......

 
Haha, m...I do love to keep you guys on your toes lol!!

 

 
Mordy:  Are we crazy OR are we crazy??? Yes. We are crazy!!!!

 
Speaking of crazy, my all time favorite recording artist (RIP)
 

 
Yo, pct...we are ALL crazy here - an essential requirement in this, our wonderful community!

...

 

[hypnos1]

Hi again @mordy
 
Re. tube spec data..once more we're back to confusion territory - ie. voltage "gain" vs current "amplification".  With the EL12, I think it's the higher Wattage output that is relevant as a power tube...

...