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Old 23rd June 2007, 03:40 PM   #11
diyAudio Member
thomas-NGU's Avatar
Join Date: May 2007
Originally posted by ducvu
Hi Mr Thoms_ngu!

Link here : http://home.zonnet.nl/horneman/813.htm

Thank you very much Mr. ducvu.

It seems very difficult to D.I.Y with this tube (FU13). Anyway, let me try my best.

Happy D.I.Y
Happy D.I.Y
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Old 25th June 2007, 02:37 PM   #12
boiss is offline boiss  Italy
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Join Date: Sep 2006
why don't you send me all the parts, I'll build it and listen to it for you.
Seriously though, there at least a dozen SE ccts for 813s (FU-13) around on the net, just watch out with the 1KV !!!
If you really want to build one or two think about the PSU first.
Regards and good luck,
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Old 25th June 2007, 05:21 PM   #13
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Join Date: May 2007
Thank you very much Mr. Boiss.

Now, I have 2 FU13 tubes & 2 6SN7 tubes. I've done 1 chassi by wood.

So far, I did finish the PSU for my project (SE FU13 Ampli), as:
Primary: 220 VAC
Secondary: 520 VAC with CT (for B+)
by EI: 3.8cm, 6cm

and one more:

Primary: 220 VAC
Secondary: 2 *10VAC/5A & 2 * 6.3VAC/3A (for filament)
by EI: 3.6cm, 6cm

The next, I will do the OPT (7K/8ohm) and chokes.

Could you please design a schematic of Single End FU13 that is simple for me?
Please teach me step by step until complete this project.

Again, thank you very much Mr. Boiss

Best regards,


P/S: I'am very sorry with my English
Happy D.I.Y
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Old 1st July 2007, 11:38 AM   #14
boiss is offline boiss  Italy
diyAudio Member
Join Date: Sep 2006
Hi Thomas,
Do a search for 'my 813' I can't remember but it may be the Horniman site again however I believe that there was a schematic for a single ended 813 amp using a 6SN7 driver.
I'm putting together a PP 813 amp but due to work I'm presently in the middle east and can't do anything with it until around the new year.
Good luck with your project.
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