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Old 8th April 2013, 07:06 PM   #1
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Exclamation Amplificator Class A 2 X EL504

hello ,

i me stocked 2 tubes EL 504 for build amplificator 2 ways to EL504 .

i research montage to single ended ( for use 2 ways ) ?

i me research to Google.com , not good research completed to value schématic and spécification

sorry , me english is bad .

http://www.diyaudio.com/forums/attac...1&d=1365447815

me tested basic montage to 1 EL 504 to 34 V - 6.3 V , not possible test , so possible error ?
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Old 8th April 2013, 07:31 PM   #2
wfmali is offline wfmali  Europe
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This might help to get you started:

EL504 Translation

Marcus
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Old 8th April 2013, 07:38 PM   #3
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Quote:
Originally Posted by wfmali View Post
This might help to get you started:

EL504 Translation

Marcus
hello ,

tks for translate info , me looking the montage and looking specifique data .

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Old 8th April 2013, 08:09 PM   #4
Ketje is offline Ketje  Belgium
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Why don't you try your luck at the Elektor (french) forum?
They are very activ with tube-amplifiers
Tubes audio - ELEKTOR.fr | Électronique : Analogique Numérique Embarqué Microcontrôleurs Audio Test Mesure
Mona
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Old 8th April 2013, 08:44 PM   #5
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Quote:
Originally Posted by Ketje View Post
Why don't you try your luck at the Elektor (french) forum?
They are very activ with tube-amplifiers
Tubes audio - ELEKTOR.fr | Électronique : Analogique Numérique Embarqué Microcontrôleurs Audio Test Mesure
Mona
hello ,

me looking the forum " Elektor " , no link to amplificator to base EL 504 !

hehehe , me research is slow ...

no problem , so instrutive research to " Google " to Home Made .

thank
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Old 9th April 2013, 08:28 AM   #6
Cookj is offline Cookj  Belgium
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Try this site

Bienvenu(e) sur AuDIYoFan.org

John
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Old 19th April 2013, 05:50 AM   #7
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hello ,

me build is up

me joint 2 pictures to 1 for " HT " & 1 for use " EL / PL 504 " .

http://www.diyaudio.com/forums/attac...1&d=1366350441

http://www.diyaudio.com/forums/attac...1&d=1366350441

so good for test no up for very good up power , me problem is charged for good use valve to datasheet !
Attached Images
File Type: jpg Alimentation HT - Chauffage des tubes EL 504 ou PL504.jpg (85.9 KB, 758 views)
File Type: jpg Ampli BF - EL 504 - PL 504.jpg (70.7 KB, 734 views)
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Old 22nd April 2013, 05:42 PM   #8
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hello ,

me build is stop it

so me transformator is very little for good use power , no probleme , the " solution " , HT to 180 V= is downgrade to good 90 V=

me news build to short listing matérial .

2 PL 504 for connected to left and right to 90 V= , use 24 V~ to filament .

me power to 8 Ohms , is very little , use 0.0.. Watts RMS !!!

so not problem , is not drive installed for test .

me montage to screen .

slow build is good appréciate to search link for build .

me first build , i me newbie , no problem , so looking build for up me good build .

bye all

ps : me test to video ...

2 PL 504 en stéreo - 80 V= - Vidéo Dailymotion
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Old 3rd May 2013, 12:16 PM   #9
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hello all ,

a stable version with my new transformer, j has to re-modify my assembly(editing) for obtenri moves forward badly because I am not good at arithmetic complex, me the power of mwatts 500, him(it) takes(brings) out in 2 x 8 ohms, have there some more of work has to make put the assembly(editing) is stable and he(it) have there not of 12 AX 7 d to use in l imédiat.

Has bientot
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File Type: jpg courbe PL 504 utilsable.jpg (306.2 KB, 557 views)
File Type: jpg PICT5610.JPG (341.1 KB, 157 views)
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Old 3rd May 2013, 08:00 PM   #10
Ketje is offline Ketje  Belgium
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Two remarks,
you draw a loadline for triode-config,where your schematic shows a penthode-connection.
You can't use a 230/12V mainstransformer with a SE stage.The bais-current will saturate the core.
Mona
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