Audioromy FU13 (813) diagram and mods

trondareo · 28th February 2009, 04:52 AM

I took the plunge recently and bought an Audioromy FU13 amp of leshele (on9mart) on ebay. The amp arrived on schedule in well padded boxes an plays wonderful music.

So now I am wondering if anyone has a circuit diagram of the amp and experience with bias adjustment or any interesting mods.

Koifarm · 28th February 2009, 09:25 AM

Look here:

http://www.roehren-und-hoeren.de/php...pic.php?t=5653

http://www.roehren-und-hoeren.de/php...pic.php?t=5767

http://www.roehren-und-hoeren.de/php...518&highlight=

http://www.roehren-und-hoeren.de/php...pic.php?t=6121

trondareo · 28th February 2009, 02:49 PM

Wow - Great!

I have surfed past Rören und Hören previously but obviously not found the right threads. There is lots of stuff there. In Norway there is a lot of interest in the Music Angel KT88, but it seems Germany is the place to go for Audioromy.

However, I see that I will have to brush up on my school german as google translate looses about half of the meaning.

revintage · 28th February 2009, 03:32 PM

Is your amp with 6V6 or ECC82 drivers?

Koifarm · 1st March 2009, 11:30 AM

Mine has 6n6p drivers

, of course.

Below the parts i have replaced until yet.

- Volumepotmeter. After 2 months it started to crack, replaced with Alps 100k LOG 2 channel potmeter.

- 47uf/40 V Capacitor to control on/off relais.

If this one is defect, the relais switch at 100hz and the fuse is blown.

- Rectifier tube was defect after 4 months, changed for another.

- Changed 6DJ8 tubes for JJ E88CC goldpin.

- Changed ECC82 for 6N6P. Must modify the heater powersupply.

The last two modifications are to change sound and this is very personal.

revintage · 1st March 2009, 11:58 AM

Koifarm,
The unlinear ECC82 should be a total disaster so your mod must have done lots!

Cobra2 · 1st March 2009, 12:14 PM

I have one too...
I tried 12BH7 instead of the 12AU7, an improvement.
But should really re-build the driver completely...

Arne K

Koifarm · 1st March 2009, 03:17 PM

Arne, you can try the JJ ECC99 this gives a better driver. You do not have to change anything. The ECC99 needs some more heater current but that is no problem for the amp.

andyjevans · 2nd March 2009, 08:56 AM

I didn't actually see the schematic anywhere - what am I missing here?

andy

revintage · 2nd March 2009, 11:58 AM

HI Andy,
It is deeply hidden in Koifarms links.......

Don´t think you will be impressed when you find it, though!

28th February 2009, 04:52 AM	#1
trondareo diyAudio Member Join Date: Feb 2009 Location: Trondheim	Audioromy FU13 (813) diagram and mods I took the plunge recently and bought an Audioromy FU13 amp of leshele (on9mart) on ebay. The amp arrived on schedule in well padded boxes an plays wonderful music. So now I am wondering if anyone has a circuit diagram of the amp and experience with bias adjustment or any interesting mods. __________________ I´m doing stuff at http://taooftubes.blogspot.com/

28th February 2009, 02:49 PM	#3
trondareo diyAudio Member Join Date: Feb 2009 Location: Trondheim	Wow - Great! I have surfed past Rören und Hören previously but obviously not found the right threads. There is lots of stuff there. In Norway there is a lot of interest in the Music Angel KT88, but it seems Germany is the place to go for Audioromy. However, I see that I will have to brush up on my school german as google translate looses about half of the meaning. __________________ I´m doing stuff at http://taooftubes.blogspot.com/

28th February 2009, 03:32 PM	#4
revintage diyAudio Member Join Date: May 2007 Location: Eskilstuna, Sweden	Is your amp with 6V6 or ECC82 drivers? __________________ Brgds Lars

1st March 2009, 11:58 AM	#6
revintage diyAudio Member Join Date: May 2007 Location: Eskilstuna, Sweden	Koifarm, The unlinear ECC82 should be a total disaster so your mod must have done lots! __________________ Brgds Lars

1st March 2009, 12:14 PM	#7
Cobra2 DIY ! diyAudio Member Join Date: Apr 2002 Location: Stavanger, Norway	I have one too... I tried 12BH7 instead of the 12AU7, an improvement. But should really re-build the driver completely... Arne K __________________ Ars longa, vita brevis

28th February 2009, 09:25 AM	#2
Koifarm diyAudio Member Join Date: Aug 2005	Look here: http://www.roehren-und-hoeren.de/php...pic.php?t=5653 http://www.roehren-und-hoeren.de/php...pic.php?t=5767 http://www.roehren-und-hoeren.de/php...518&highlight= http://www.roehren-und-hoeren.de/php...pic.php?t=6121

1st March 2009, 11:30 AM	#5
Koifarm diyAudio Member Join Date: Aug 2005	Mine has 6n6p drivers , of course. Below the parts i have replaced until yet. - Volumepotmeter. After 2 months it started to crack, replaced with Alps 100k LOG 2 channel potmeter. - 47uf/40 V Capacitor to control on/off relais. If this one is defect, the relais switch at 100hz and the fuse is blown. - Rectifier tube was defect after 4 months, changed for another. - Changed 6DJ8 tubes for JJ E88CC goldpin. - Changed ECC82 for 6N6P. Must modify the heater powersupply. The last two modifications are to change sound and this is very personal.

1st March 2009, 03:17 PM	#8
Koifarm diyAudio Member Join Date: Aug 2005	Arne, you can try the JJ ECC99 this gives a better driver. You do not have to change anything. The ECC99 needs some more heater current but that is no problem for the amp.

2nd March 2009, 08:56 AM	#9
andyjevans diyAudio Member Join Date: Sep 2003 Location: London	I didn't actually see the schematic anywhere - what am I missing here? andy

2nd March 2009, 11:58 AM	#10
revintage diyAudio Member Join Date: May 2007 Location: Eskilstuna, Sweden	HI Andy, It is deeply hidden in Koifarms links....... Don´t think you will be impressed when you find it, though! __________________ Brgds Lars

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