Ed8000

alexg · 1st October 2008, 02:39 PM

I saw these power triode tubes for sale, made by Telefunken and supposedly will last for 10,000 hours!

Anybody have built amp with this triode?

Here is the Tube data.

Thanks.

wfmali · 1st October 2008, 09:04 PM

Own the ED8000 myself and thought about an amplifier also - but it seems not to be really promising. Its pretty high transconductance requires appropriate handling, and since thermal runaway is a real issue, a cathode resistor is required to stabilize.
Attached a link to a german page where someone tried it, would say without getting too enthusiastic about the results... And: these little tubies have become really expensive....

http://home.tiscalinet.de/arudolph/ed8000/ed8k_v.htm

Marcus

nettimar · 23rd May 2012, 04:29 AM

Hi

Apologies for answering 3 years later ...

Check this out:

diytube.com :: View topic - Single Ended Triode C3M + ED8000

Regards

Nett

azazello · 24th May 2012, 05:39 AM

Russian similar tube is 6S19P /6С19П/ - very nice tube with neutral sounding and deep scene! I build SE and I liked it!

1st October 2008, 02:39 PM	#1
alexg diyAudio Member Join Date: Jan 2005 Location: Philippines	Ed8000 I saw these power triode tubes for sale, made by Telefunken and supposedly will last for 10,000 hours! Anybody have built amp with this triode? Here is the Tube data. Thanks.

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1st October 2008, 09:04 PM	#2
wfmali diyAudio Member Join Date: May 2003 Location: G-U	Own the ED8000 myself and thought about an amplifier also - but it seems not to be really promising. Its pretty high transconductance requires appropriate handling, and since thermal runaway is a real issue, a cathode resistor is required to stabilize. Attached a link to a german page where someone tried it, would say without getting too enthusiastic about the results... And: these little tubies have become really expensive.... http://home.tiscalinet.de/arudolph/ed8000/ed8k_v.htm Marcus

23rd May 2012, 04:29 AM	#3
nettimar diyAudio Member Join Date: Mar 2011	Hi Apologies for answering 3 years later ... Check this out: diytube.com :: View topic - Single Ended Triode C3M + ED8000 Regards Nett

24th May 2012, 05:39 AM	#4
azazello diyAudio Member Join Date: Aug 2008 Location: Bulgaria	Russian similar tube is 6S19P /6С19П/ - very nice tube with neutral sounding and deep scene! I build SE and I liked it!

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