13E1 SE design

[Rob11966]

Hi Folks,

Does anyone know of any schematics/designs for a single ended amp based on the 13E1 tube.

I have found this one -http://www.turneraudio.com.au/seul22monobloc.html - but I was wondering if there was anything else out there.

I did hear of a circuit using the 45 as a driver but I can't seem to find anything.

Any ideas?

Cheers,

Rob

but

[nhuwar]

All I know is that the 13e1 is pricey and hard to find.

If you have some you lucky. As far as driving themI would use Morgan Jones book as a refrence, he builds a push pull amp with them in the book. I know it's not the exact info you wanted but I figured it's better them nothing.


Good luck,

Nick

[Bandersnatch]

hey-Hey!!!,
That tube is very similar to ~3 type 12E1 in the same bottle. Find a 12E1 schematic and massage it a bit( or perhaps practice with the 12E1 first?). There is nothing really special about the 13E1 that would preclude you from building it into any SE pentode amp as long as you took care to account for the bigger tube.
cheers,
Douglas

[Ouroboros]

No, a 13E1 is very different from a 12E1, it's got an anode dissipation of 90W to start with.

Perhaps if you connected three 12E1 devices in parallel you might have something that was more similar.

[ErikdeBest]

Perhaps if you connected three 12E1 devices in parallel you might have something that was more similar.

I think that Douglas meant exactly that when writing

That tube is very similar to ~3 type 12E1 in the same bottle.

[Ouroboros]

Oh-Oh! I overloooked the 'x3' bit in the first posting.


Sorry :-(

[Rob11966]

Thanks for the replies, I am still searching for the elusive SE amp design with a reasonable power output (15W+) and B+ voltages less than 700v or so. The 13E1 looked interesting. I keep coming back to the 845 tube but the 1K B+ puts me off.....

Cheers,

Rob

[Bandersnatch]

Originally posted by Rob11966
Thanks for the replies, I am still searching for the elusive SE amp design with a reasonable power output (15W+) and B+ voltages less than 700v or so. The 13E1 looked interesting. I keep coming back to the 845 tube but the 1K B+ puts me off.....

Cheers,

Rob

hey Rob,
A single KT88 can run to 15W SE. The 13E1 shoulc be able to do near double this given a properly done OPT( not exactly a trivial or inexpensive undertaking ). See Pete Millett's E-Linear SE amp; that one I've heard as he laid it out, and certainly it works well in PP too.
cheers,
Douglas

[kstagger]

I'll throw out the EL156 - a 50W plate / 8W screen pentode. In fact I'm running a SE EL156 (in UL mode) and I really like what I'm hearing. I'm using the cheaper Shuguang version with the octal base.

Specs are here:
http://www.mif.pg.gda.pl/homepages/f...28/e/EL156.pdf

[Bandersnatch]

hey Kevin,
Where did you get them? I've got a pair of E-Linear W6m that I'd like to run that tube in. Any issues with them yet? Do they really stand 50W of plate dissipation?
cheers,
Douglas