"12EA6" Pentode !

cloud · 4th May 2007, 04:11 PM

Has anyone ever used or built a PP or SE amp using the 12EA6 tube's often found in old car radio's ? If so please give detail's ect...

Miles Prower · 4th May 2007, 11:43 PM

These look pretty useless as audio finals. Given a Vpk= 12.6Vdc and an Ipq= 3.2mA, you'd be looking at outputs of mere microwatts.

cloud · 5th May 2007, 05:08 AM

Can the 12EA6 be used in some other way ? I have 6 NOS of them which my grand-father never used from the 50's, he was a car buff of sort's.

Miles Prower · 5th May 2007, 05:53 PM

Quote:

Originally posted by cloud
Can the 12EA6 be used in some other way ? I have 6 NOS of them which my grand-father never used from the 50's, he was a car buff of sort's.

Since it's a small signal tube, about the only thing it's good for would be a preamp. either that, or try to find someone who's into restoring old VT car radios and trade for something else.

cloud · 5th May 2007, 08:23 PM

Building a pre-amp sound's like a really good idea ! Can you point me in some kind of direction there? My first thought was maybe some type of low voltage headphone amp ect...

tubelab.com · 5th May 2007, 09:30 PM

You need to look here!

http://www.diyforums.org/millett.html

Sorry; I realized after I posted that my dyslexic eyeballs got the A and the E mixed up.

cloud · 6th May 2007, 12:44 AM

Having very little electronic's knowledge, I have been looking at pentode data sheet's! From most pic's internally they all look to be quite similar, only difference seem's to be the pin out's ect... My question is if finding a low voltage circuit for say a SE amp is it possible to re-configure pin layout to make these tube's work? It sound's crazy but is it possible ?

4th May 2007, 04:11 PM	#1
cloud diyAudio Member Join Date: May 2006	"12EA6" Pentode ! Has anyone ever used or built a PP or SE amp using the 12EA6 tube's often found in old car radio's ? If so please give detail's ect...

4th May 2007, 11:43 PM	#2
Miles Prower diyAudio Member Join Date: May 2005 Location: USA Blog Entries: 2	These look pretty useless as audio finals. Given a Vpk= 12.6Vdc and an Ipq= 3.2mA, you'd be looking at outputs of mere microwatts. __________________ There are no foxes in atheistholes www.dolphin-hsl.com

5th May 2007, 09:30 PM	#6
tubelab.com diyAudio Member Join Date: Jul 2005 Location: South Florida	You need to look here! http://www.diyforums.org/millett.html Sorry; I realized after I posted that my dyslexic eyeballs got the A and the E mixed up. __________________ Too much power is almost enough! Turn it up till it explodes - then back up just a little.

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5th May 2007, 05:08 AM	#3
cloud diyAudio Member Join Date: May 2006	Can the 12EA6 be used in some other way ? I have 6 NOS of them which my grand-father never used from the 50's, he was a car buff of sort's.

5th May 2007, 08:23 PM	#5
cloud diyAudio Member Join Date: May 2006	Building a pre-amp sound's like a really good idea ! Can you point me in some kind of direction there? My first thought was maybe some type of low voltage headphone amp ect...

6th May 2007, 12:44 AM	#7
cloud diyAudio Member Join Date: May 2006	Having very little electronic's knowledge, I have been looking at pentode data sheet's! From most pic's internally they all look to be quite similar, only difference seem's to be the pin out's ect... My question is if finding a low voltage circuit for say a SE amp is it possible to re-configure pin layout to make these tube's work? It sound's crazy but is it possible ?

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