When I look good I see that they use components of picture tube guns to build this tube.
I recognize the cathode and a grid of the picture tube gun where they build the anode with.
On the detail of the foto above I saw also grit number 1.
It's the same grit1 used in a picture tube.
They just copied a collor picture tube gun. They just rotated G2 of the gun and made an anode of it.
I recognize the cathode and a grid of the picture tube gun where they build the anode with.
On the detail of the foto above I saw also grit number 1.
It's the same grit1 used in a picture tube.
They just copied a collor picture tube gun. They just rotated G2 of the gun and made an anode of it.
If you read through their site, (The 'mother-site' Not the 'Tube-Site') where it describes testing of Cathode-assemblies, these are done in 'Dummy' tubes--Even shows a few racks of them in little red sockets....
I'll bet these are exactly what they are 'passing off' as ECC83!
The grid in a CRT gun is just a plate with a hole in....
The anode in their 'dummy-tubes' I'll bet is just a plate mounted at a specific distance--Just like you see in that 'new ECC83'/e813CC or whatever they are calling it...
I'llneed convincing they work as well as a 'conventional' tube they intend it to replace
If I get time later, I have a small 6" colour CRT round here somewhere...
I'll rig it up in place of a 6SL7 in a breadboard amp Ive got kicking round,--(one half anyway...), using the CRT A1 as the plate....
Could be interesting!
I'll bet these are exactly what they are 'passing off' as ECC83!
The grid in a CRT gun is just a plate with a hole in....
The anode in their 'dummy-tubes' I'll bet is just a plate mounted at a specific distance--Just like you see in that 'new ECC83'/e813CC or whatever they are calling it...
I'llneed convincing they work as well as a 'conventional' tube they intend it to replace
If I get time later, I have a small 6" colour CRT round here somewhere...
I'll rig it up in place of a 6SL7 in a breadboard amp Ive got kicking round,--(one half anyway...), using the CRT A1 as the plate....
Could be interesting!
Re: Re: Re: Re: I thought this is old news?
Optical illusion - one of the pins is completely shrouded by the one in front of it, (from the camera perspective) but look at the internal connections and you can almost see it. (There are hints of another pin in front of what appears to be the first pin on the right.)
Merlinb said:
Optical illusion - one of the pins is completely shrouded by the one in front of it, (from the camera perspective) but look at the internal connections and you can almost see it. (There are hints of another pin in front of what appears to be the first pin on the right.)
There are 9 pins. The 9th is exactly behind the last pin visible on the right, so it is invisible in the photo. It does cast a visible shadow on the surface that the tube is sitting on.
If anyone has an RCA tube manual, there is a diagram of a CRT construction. The "grid" is just a piece of metal with a small hole in it. I have verified this by taking apart a crt.
The diagram is on page 11 in RC-30 and RC-25 and page 10 in RC-22.
Will this work well for audio? We won't know until one is connected up and playing music. Will it drop in to a 12AX7 socket? Maybe some, but probably not all.
grid ...
Hello, have a look at the ECLL800.
link
The triode section
has no mash grid, too. It uses the grid holders only.
This is still different from a crt electron gun but ...
Kind regards,
Darius
Hello, have a look at the ECLL800.
link
The triode section
has no mash grid, too. It uses the grid holders only.
This is still different from a crt electron gun but ...
Kind regards,
Darius
Trout said:
I think I can find better places to spend my limited hobby funds, I paid less than that recently for a well worn, but good single plate 2A3.. I still have something like 50 NOS 1950s vintage JAN 5751 sitting in my stash so I'll just use those instead. I've also got dozens of new and used 12AX7A so I can't see paying mega $$ for these..
Unfortunately that's probably a total non-starter in the MI industry as well, even at 10% of that price it would not get picked up by most industry majors.
This will have to be a boutique hifi tube at those prices. Too bad..
Depends. If it sounds better than the 380 USD http://store.tubedepot.com/bsct-12ax7-mullard.html
one. Then it would be interesting for those who spend that kind of money.
I have yet to build anything with the 12ax7. And for that I've earmarked the near 12ax7's namely the 6N2P-EV reputed to sound good and they cost 2USD per tube. (Going to be the Baby Huey)
For sure.
Indeed. Oops.
Here is the price for a single 129 USD.
http://store.tubedepot.com/nos-12ax7-mullard.html
Here is the price for a single 129 USD.
http://store.tubedepot.com/nos-12ax7-mullard.html
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