Look at Yvesm's web pages:
http://www.dissident-audio.com/PP_ECL86/Page.html
Here is my take on Yves circuit
http://www.diyaudio.com/forums/atta...tamp=1113448831
I think these are the same links I put in at post #362 on pg 15 of the BH Thread but worth a check.
I'm building another ECL86 (6GW8) version for a niece at the moment. It will be fixed biased variant, close to Yves original but using Ultralinear Mode.
Cheers,
Ian
http://www.dissident-audio.com/PP_ECL86/Page.html
Here is my take on Yves circuit
http://www.diyaudio.com/forums/atta...tamp=1113448831
I think these are the same links I put in at post #362 on pg 15 of the BH Thread but worth a check.
I'm building another ECL86 (6GW8) version for a niece at the moment. It will be fixed biased variant, close to Yves original but using Ultralinear Mode.
Cheers,
Ian
Sorry guys - just updated my profile, you should be able to PM me now.
Push Pull Operating points for ECL86 on this data sheet:
http://www.mif.pg.gda.pl/homepages/frank/sheets/010/e/ECL86.pdf
It says Raa = 9K1, I'm building the new amp with Hammond 1609 which is 10K Raa. Close enough. I thought they would be a little better than the Hammond 1608 (8K Raa) for this build.
Cheers,
Ian
Push Pull Operating points for ECL86 on this data sheet:
http://www.mif.pg.gda.pl/homepages/frank/sheets/010/e/ECL86.pdf
It says Raa = 9K1, I'm building the new amp with Hammond 1609 which is 10K Raa. Close enough. I thought they would be a little better than the Hammond 1608 (8K Raa) for this build.
Cheers,
Ian
Hi Ian,
Thanks for the reply - I'm trying out Blumlein's Garter Biasing on this amp :http://www.diyaudio.com/forums/showthread.php?s=&postid=1593376#post1593376
Thanks for the reply - I'm trying out Blumlein's Garter Biasing on this amp :http://www.diyaudio.com/forums/showthread.php?s=&postid=1593376#post1593376
Oh, BTW I found the original Baby Huey thread in my references: http://www.diyaudio.com/forums/showthread.php?postid=552739#post552739
Hi Gingertube,
In post 6 you mention using 1609's to build a Babey Huey. Did you ever get around to it. I ask because I'm thinking of using my 1609's to build either an ECL86 or EL84 version but which one. My 0-250v trannie is going to give out a high(ish) B+. The only valve stuff I've built so far (that's worked) has been the K502 and am now removing the mods for this project.
Many thanks for your great Babey Huey thread
Bill Massey
In post 6 you mention using 1609's to build a Babey Huey. Did you ever get around to it. I ask because I'm thinking of using my 1609's to build either an ECL86 or EL84 version but which one. My 0-250v trannie is going to give out a high(ish) B+. The only valve stuff I've built so far (that's worked) has been the K502 and am now removing the mods for this project.
Many thanks for your great Babey Huey thread
Bill Massey
Bill,
250V secondary on the power tranny will get you around +300V to +320V rail.
You loose about 12V for the output tube bias which subtracts from that rail voltage (for the CCS biased versions). Either of the EL84 or ECL86 versions will be OK with 1609 Output Trannies at these voltage levels. Its at the top of what I would recommend for ECL86.
So really its your choice as to which you go for.
Cheers,
Ian
250V secondary on the power tranny will get you around +300V to +320V rail.
You loose about 12V for the output tube bias which subtracts from that rail voltage (for the CCS biased versions). Either of the EL84 or ECL86 versions will be OK with 1609 Output Trannies at these voltage levels. Its at the top of what I would recommend for ECL86.
So really its your choice as to which you go for.
Cheers,
Ian
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