Possible to convert Audiorom Fu29 to Single end?

Join · 17th November 2011, 03:12 PM

Hi!

Just recently I purchased a second-hand Audioromy Fu29.
My Lowther Fidelio's with DX3's don't really need that amount of power. I have tested Single-end on them, and it is hard to forget the sound that came from them that time!

Do anyone got the knowledge to tell me if it is doable to convert the push-pull Audioromy Fu29 to SE, and what's needed?

Somewhere on the internet I read that the Fu29/ Gu29/ 829b should be capable of about 10W in triode mode.

Any input is appreciated.

Best regards,

John

Alastair E · 17th November 2011, 04:30 PM

Major work, Plus the cost of replacing the O/P Transformer for a proper SE one....

No worth it, Sell and buy a proper SE amp....

Join · 17th November 2011, 04:53 PM

Quote:

Originally Posted by Alastair E

Major work, Plus the cost of replacing the O/P Transformer for a proper SE one....

No worth it, Sell and buy a proper SE amp....

Thank you for your reply. I will keep this one until there is a SE Audioromy Fu13 or a pair of SE 300b monoblocks up for sale somewhere. They are both discontinued over there in china..

TheGimp · 17th November 2011, 10:38 PM

While not particularly practical, if it is operating in class A you can disable the drive to one output tube and run the other SE class A. The sites I've seen indicate it is in class A, however the normal class A amp may parallel both halves of the tube. Therefore you will not get as much out if you disable drive to one side of each PP pair as you would running both sections in parallel SE.

17th November 2011, 03:12 PM	#1
Join diyAudio Member Join Date: Jan 2010	Possible to convert Audiorom Fu29 to Single end? Hi! Just recently I purchased a second-hand Audioromy Fu29. My Lowther Fidelio's with DX3's don't really need that amount of power. I have tested Single-end on them, and it is hard to forget the sound that came from them that time! Do anyone got the knowledge to tell me if it is doable to convert the push-pull Audioromy Fu29 to SE, and what's needed? Somewhere on the internet I read that the Fu29/ Gu29/ 829b should be capable of about 10W in triode mode. Any input is appreciated. Best regards, John

17th November 2011, 04:30 PM	#2
Alastair E diyAudio Member Join Date: Feb 2004 Location: South Wales	Major work, Plus the cost of replacing the O/P Transformer for a proper SE one.... No worth it, Sell and buy a proper SE amp.... __________________ Das Beste Oder Nichts

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17th November 2011, 10:38 PM	#4
TheGimp diyAudio Member Join Date: Aug 2009 Location: Johnson City, TN	While not particularly practical, if it is operating in class A you can disable the drive to one output tube and run the other SE class A. The sites I've seen indicate it is in class A, however the normal class A amp may parallel both halves of the tube. Therefore you will not get as much out if you disable drive to one side of each PP pair as you would running both sections in parallel SE.

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