[jekjek]

Another interesting tubes to try is the raytheon 6414.
I'm not sure which adapter i can use for this

 

[gibosi]

Another interesting tubes to try is the raytheon 6414.
I'm not sure which adapter i can use for this

 
The 6416 appears to be be a souped up 12AT7.
 
http://www.audiotubes.com/12at7.htm
 
A standard 12AU7 (on top) to 6SN7 (on bottom) adapter should do the trick. There are a ton of them on eBay.

 

[2359glenn]

As far as rectifiers go here is a good one not all are the same you have to find one with the large bottle and base.
This will power the OTL no problem.
 
http://www.ebay.com/itm/2-NOS-1-x-GE-5AU4-Vacuum-Tube-Untested-Guaranteed-2-Work-/142154804200?hash=item2119162be8:g:im0AAOSwMtxXtgsf
 
Spec sheet
 
http://frank.pocnet.net/sheets/093/5/5AU4.pdf

 

[jekjek]

  As far as rectifiers go here is a good one not all are the same you have to find one with the large bottle and base.
This will power the OTL no problem.
 
http://www.ebay.com/itm/2-NOS-1-x-GE-5AU4-Vacuum-Tube-Untested-Guaranteed-2-Work-/142154804200?hash=item2119162be8:g:im0AAOSwMtxXtgsf
 
Spec sheet
 
http://frank.pocnet.net/sheets/093/5/5AU4.pdf

Large bottle and base will have effect as well? 
 
Is there any tubes that comes with your amp?

 

[2359glenn]

 

  As far as rectifiers go here is a good one not all are the same you have to find one with the large bottle and base.
This will power the OTL no problem.
 
http://www.ebay.com/itm/2-NOS-1-x-GE-5AU4-Vacuum-Tube-Untested-Guaranteed-2-Work-/142154804200?hash=item2119162be8:g:im0AAOSwMtxXtgsf
 
Spec sheet
 
http://frank.pocnet.net/sheets/093/5/5AU4.pdf

Large bottle and base will have effect as well? 
 
Is there any tubes that comes with your amp?

Yes it will come with a 3DG4 rectifier 350ma if you get the regular transformer   If you get the Lundahl it will come
with two 42EC4/PY500 rectifiers they can handle 1000ma

 

[gibosi]

  Yes it will come with a 3DG4 rectifier 350ma if you get the regular transformer   If you get the Lundahl it will come
with two 42EC4/PY500 rectifiers they can handle 1000ma

 
And I assume he could choose HEXFREDs as well?

 

[Xcalibur255]

   
And I assume he could choose HEXFREDs as well?

 
Could and should IMHO.

 

[jekjek]

And I assume he could choose HEXFREDs as well?

Thank you Ken
I think 3DG4, 5931 and your rectifier guide is my way to go

 

[jelt2359]

Someone pm-ed me to ask about the GEL3N vs GOTL with the HD800SD.

Short story is this. If you are sticking to the HD800SD, then the GOTL does better. It's a beautiful combi- I am using it with hexfred, 6sn7w tall bottle metal base, and 6x 6bl7.

The sound is not peaky at all, with just the right amount of romantic bloom. Noisy as hell without music playing (mine is non-Lundahl, the fancier transformers should solve this problem), but heck, I listen to music.

The GEL3N is sweet, but thinner, and just has that bit of peak in the treble still. I'd stick to planars on the GEL3N, or lower impedance dynamics.

 

[gibosi]

Another lesser-known rectifier: N.V. Ratron AZ12:
 

 
According to the Radiomuseum site, Ratron was established in Berlin in 1925. In 1941, a subsidiary company, N.V. Ratron was established in Beek-Ubbergen, NL, apparently for the purpose of manufacturing rectifiers for the German armed forces. The company ceased operation in 1945, with the end of the war.
 
While the logo and lettering are long gone, the photos on the following site lead me to believe that it is, in fact, an N.V. Ratron AZ12
 
http://www.tubecollection.de/ura/ratron.htm
 
And I am pleased to report that it appears to be working fine.

 

[jekjek]

Another lesser-known rectifier: N.V. Ratron AZ12:




According to the Radiomuseum site, Ratron was established in Berlin in 1925. In 1941, a subsidiary company, N.V. Ratron was established in Beek-Ubbergen, NL, apparently for the purpose of manufacturing rectifiers for the German armed forces. The company ceased operation in 1945, with the end of the war.

While the logo and lettering are long gone, the photos on the following site lead me to believe that it is, in fact, an N.V. Ratron AZ12

http://www.tubecollection.de/ura/ratron.htm

And I am pleased to report that it appears to be working fine.

Interesting. 250ma?

 

[gibosi]

Interesting. 250ma?

 
All AZ12 and AZ4 are 200ma. So it would be fine with four 6BL7 in the OTL. And also in Glenn's EL3N amp.

 

[2359glenn]

 

Interesting. 250ma?

 
All AZ12 and AZ4 are 200ma. So it would be fine with four 6BL7 in the OTL. And also in Glenn's EL3N amp.

I originally had the AZ4 but changed it to 8 pin 5U4 or 3DG4 more common.
My next one will be 8 pin and plan on using a 3DG4 that I paid $1.00 for a 350 ma tube.

 

[jekjek]

Tried to hunt for CK5694 but i got Raytheon 6N7G instead


Would love to try this in Glenn OTL

I also found ECC35


Tried this ecc35 on littledot and i find it as a very fun tube

 

[gibosi]

 
I originally had the AZ4 but changed it to 8 pin 5U4 or 3DG4 more common.
My next one will be 8 pin and plan on using a 3DG4 that I paid $1.00 for a 350 ma tube.

 
Will it be able to use 5U4 as well? If so, with adapters, then of course, AZ4 and AZ12 could be used too.