Great, thanks Volker ... it"s on my list !!

Marty.

Hi All ,
Anybody have a BOM for the Dual LA-2A for the european customers including where to buy tubes and T4B cells ??
And also the right type of tubes
Thank you all !!
Fabio

What happened to the build thread from S.A. first build?

I just looked for it a couple weeks ago referencing the PCB I have from that buy.

Would any la2a bom work for most of this build? I have found some US friendly BOM's for diffrent layouts and was wondering if most of it would be the same?

Eric

Thanks,

I actually orderd the PSU from the group buy so Im good to go there. As for caps I can figure that out pretty easily.

Im just being lazy Im sure I can get together a BOM onmy own pretty quickly.

Eric

This thread is great news !!!

Now, to the questions :

Will the antek 1T250 work here?

Seems like an economical option...i think the voltages and VA´s are right

Great thread idea Silent Arts.

To everyone else, Silent Arts has been so helpful in my experience at the "Franks Place" forum for this project and I am glad the thread can continue here at groupdiy.

Now for my question, since these things put out huge amounts of gain, can I substitute input transformers and use 1:1 ratio transformers rather than the normal 1:4 to lower the amount of gain? Besides substituting the 100k gain pot for a the 25kpot/75k resistor as discussed at Franks Place , could I substitute 1:1 input transformers instead?  I have these Sowters lying around which are 600/600 ohms 1:1  and I would love to make use of them.

Thanks

Thanks,

I was wondering about the input iron also. Im considering using Lundhal transformers and Talked with Kevin the US distribitor and he suggested using 1:1 on the input as well.
Im working on a USA Bom and noticed I cant find the silver Mica caps. Does anybody have a usa source for those?

Eric

Thats what I figured but I thought that I would try and stay true to your original design.

Eric

Quote from: Silvas on March 24, 2009, 09:28:08 PM

Will the antek 1T250 work here?

looks good to me, but you won't have any relay power for the bypass (actually those are "compressor in" relays.

Eric, your relays are fine.

But it is possible to steal some voltage from the heaters secondary to do this right? running the relays at 5v ? or i can use a second toroid (have lots of 10va anteks lying around).

Thanks !