The Stax Thread III

[Pokemonn]

Yea you are really right. I will try to build it Thanks!

 

[Jones Bob]

I really envy you guys...I want to build my Carbon GG. I have already bought boards from Soren. but I have no knowledge to build...sad...lol

The longest journey begins with the first step. You have taken that first step (GG PCBs). Over at the other site, there is a whole thread on DIYing the GG. Lots of people there to help with your next steps.

 

[SeaWo|f]

no idea how to build an amp and starting with a complex stat amp, running what 600v rails? Seems reasonable to me. Please live stream.

 

[Pokemonn]

Thank you for your advices, Bob!

 

[Whitigir]

no idea how to build an amp and starting with a complex stat amp, running what 600v rails? Seems reasonable to me. Please live stream.

Dude...working with electricity while being distracted can only result in one thing....

 

[SeaWo|f]

No commentary needed on the stream just put the camera to the side somewhere with a view of the work bench any time power is turned on to the amp. Poke you live is a stand alone home right without too many near by structures and by your self I hope?

 

[Pokemonn]

yes its stand-alone house with super duper old parents...but I prefer my privacy protected lol

 

[Jones Bob]

No commentary needed on the stream just put the camera to the side somewhere with a view of the work bench any time power is turned on to the amp. Poke you live is a stand alone home right without too many near by structures and by your self I hope?

Sigh.......

 

[AnakChan]

I really envy you guys...I want to build my Carbon GG. I have already bought boards from Soren. but I have no knowledge to build...sad...lol

You're not alone here in Tokyo. There's 2 other upcoming builders (me, you already know about, and another closet Head-Fier). We should sync up off line and work on our builds and maybe we could see who can make chassis for us too - not exactly bulk but having 3 built may be a little easier to find someone than a one-off.

 

[Jones Bob]

Just found this EL34D tube on the internet.

http://www.chameleonracks.com/images/news/5-EL34D-2015.10-uF-b.pdf

It’s a true triode (no G2 or G3) plug-in replacement for a conventional EL34 circuit. The plate, G1, and indirectly heated cathode are supposedly purpose designed and not just an EL34 assembled with grids missing.

One drawback for use in a BHSE or GG is a maximum plate voltage of 600V, so don’t try it.

No other info.

I suspect it is a Chinese one of a kind Wondertube. Probably Tianjin TJ Full Music custom built to vendor specs. Like the Sophia EL34-ST tubes.

 

[Jones Bob]

You're not alone here in Tokyo. There's 2 other upcoming builders (me, you already know about, and another closet Head-Fier). We should sync up off line and work on our builds and maybe we could see who can make chassis for us too - not exactly bulk but having 3 built may be a little easier to find someone than a one-off.

That sounds like it could be a great learning experience for everyone.

On that other site, with the thread on DIY GG, there is a member that sells the attractive double cases that Whitigir and I use on our GGs. He also offers a slightly reworked version for a Carbon build.

Things go so much better building these amps when the metal work is solved for you.

 

[Whitigir]

That sounds like it could be a great learning experience for everyone.

On that other site, with the thread on DIY GG, there is a member that sells the attractive double cases that Whitigir and I use on our GGs. He also offers a slightly reworked version for a Carbon build.

Things go so much better building these amps when the metal work is solved for you.

Definitely recommended on those chassis

 

[Jones Bob]

An old shot of mine with cases side by side.

There is a black volume knob on the amplifier, but not easily seen here.

Taken just now, with the PS case under the Yggy.

 

[JimL11]

Just found this EL34D tube on the internet.

http://www.chameleonracks.com/images/news/5-EL34D-2015.10-uF-b.pdf

One drawback for use in a BHSE or GG is a maximum plate voltage of 600V, so don’t try it.

Actually the spec states the maximum DC plate voltage is 600v, and it says that it can be used in any situation where a triode-strapped EL34 can be used, including push-pull applications, so it should be able to be used in a BHSE or GG. Remember, tubes are not like transistors, where going over the maximum specified voltage means instant death for the transistor. Tubes that are specified at 600V DC plate voltage may see 1000 volts AC peak in a push-pull application.

 

[Jones Bob]

Actually the spec states the maximum DC plate voltage is 600v, and it says that it can be used in any situation where a triode-strapped EL34 can be used, including push-pull applications, so it should be able to be used in a BHSE or GG. Remember, tubes are not like transistors, where going over the maximum specified voltage means instant death for the transistor. Tubes that are specified at 600V DC plate voltage may see 1000 volts AC peak in a push-pull application.

True. If the spec is to be believed. Liked to see some hands on experience to validate.

I put that note in not to try in a BHSE or GG, as CYA with an unknown tube in a high voltage application.

I won’t be putting my money up first. But thought this was an interesting twist on current manufacture EL34 tubes.