Original ECL86 "Baby Huey" thread

jkeny · 24th August 2008, 09:27 PM

I can't seem to do a search in the archives for this does somebody have a link to it?

Can an archive search be done?

gingertube · 25th August 2008, 12:43 AM

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

DrewP · 25th August 2008, 12:50 AM

Ian, is there any way I can get in touch with you to discuss circuit stuff off board?

Cheers

Drew

gingertube · 25th August 2008, 12:53 AM

Drew,
Click on my underlined "moniker" on the left side of my post and my profile page will come up. On there is a link to email me direct.
Cheers,
Ian

PeteMcK · 25th August 2008, 12:56 AM

Ian,
your 2nd link doesn't work for me;
do you know off-hand the primary impedance of the OT for Yve's amp? interesting schematic.

gingertube · 25th August 2008, 01:03 AM

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/f...10/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

jkeny · 25th August 2008, 01:24 AM

Hi Ian,
Thanks for the reply - I'm trying out Blumlein's Garter Biasing on this amp :http://www.diyaudio.com/forums/showt...76#post1593376

jkeny · 25th August 2008, 01:50 AM

I didn't think the 270R was split, I thought I just changed all 200R to 270R?

Thanks for the info on the 470K.

Have you tried this biasing method?

Will the feedback R need to be changed?

gingertube · 25th August 2008, 01:54 AM

jkeny,
You are obviously responding to the post I had here for about 10 minutes before deleting it since it contained BS. Just c hanging all the 200R to 270R is correct.
I have posted to your Blumlein Garter thread instead with better info.
Cheers,
Ian

jkeny · 25th August 2008, 01:58 AM

Ah, yes I was confused more than usual for a moment so I posted this to the Garter thread as well just to be sure

24th August 2008, 09:27 PM	#1
jkeny Banned Join Date: Feb 2007 Location: Dublin	Original ECL86 "Baby Huey" thread I can't seem to do a search in the archives for this does somebody have a link to it? Can an archive search be done?

25th August 2008, 12:56 AM	#5
PeteMcK diyAudio Member Join Date: Feb 2002 Location: Sydney	Ian, your 2nd link doesn't work for me; do you know off-hand the primary impedance of the OT for Yve's amp? interesting schematic. __________________ ‘today… there lives alongside the twentieth century the tenth or thirteenth. A hundred million people use electricity and still believe in the magic power of signs and exorcisms” Trotsky

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25th August 2008, 12:43 AM	#2
gingertube diyAudio Member Join Date: Oct 2004 Location: Adelaide South Oz	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

25th August 2008, 12:50 AM	#3
DrewP diyAudio Member Join Date: Jan 2002 Location: Canberra, Australia	Off Topic Ping Gingertube Ian, is there any way I can get in touch with you to discuss circuit stuff off board? Cheers Drew

25th August 2008, 12:53 AM	#4
gingertube diyAudio Member Join Date: Oct 2004 Location: Adelaide South Oz	Drew, Click on my underlined "moniker" on the left side of my post and my profile page will come up. On there is a link to email me direct. Cheers, Ian

25th August 2008, 01:03 AM	#6
gingertube diyAudio Member Join Date: Oct 2004 Location: Adelaide South Oz	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/f...10/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

25th August 2008, 01:24 AM	#7
jkeny Banned Join Date: Feb 2007 Location: Dublin	Hi Ian, Thanks for the reply - I'm trying out Blumlein's Garter Biasing on this amp :http://www.diyaudio.com/forums/showt...76#post1593376

25th August 2008, 01:50 AM	#8
jkeny Banned Join Date: Feb 2007 Location: Dublin	I didn't think the 270R was split, I thought I just changed all 200R to 270R? Thanks for the info on the 470K. Have you tried this biasing method? Will the feedback R need to be changed?

25th August 2008, 01:54 AM	#9
gingertube diyAudio Member Join Date: Oct 2004 Location: Adelaide South Oz	jkeny, You are obviously responding to the post I had here for about 10 minutes before deleting it since it contained BS. Just c hanging all the 200R to 270R is correct. I have posted to your Blumlein Garter thread instead with better info. Cheers, Ian

25th August 2008, 01:58 AM	#10
jkeny Banned Join Date: Feb 2007 Location: Dublin	Ah, yes I was confused more than usual for a moment so I posted this to the Garter thread as well just to be sure

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