hello ,
i me started the news build to clone proto PL 504 !
1 transfo TV and 2 OPT 3K for good use max power to switching EL or PL 504 in 6.5 V or 26 V 😉
the pré ampli to 12AT7 and 2 valve EY88 and 2 1N4007 for build hybride bridge to diode .
bye all 😉
i me started the news build to clone proto PL 504 !
1 transfo TV and 2 OPT 3K for good use max power to switching EL or PL 504 in 6.5 V or 26 V 😉
the pré ampli to 12AT7 and 2 valve EY88 and 2 1N4007 for build hybride bridge to diode .
bye all 😉
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Try UF4007 in your hybrid rectifier. (Less switching noise)
Essayes UF4007 dans ta redresseur hybride. (Faible bruit HF de redressage)
My French is not so good. 😀
Post schema, pix svp.
Essayes UF4007 dans ta redresseur hybride. (Faible bruit HF de redressage)
My French is not so good. 😀
Post schema, pix svp.
hello Kevinkr ,
so me build is progréssive 😉
so long build for first " ON " so not error ...
thank for me help so UF4007 , so possible use BY299?
hum...me shéma is build to me head 🙄, no problem for posted to later so good possibility the clone for all 😉
PS: me possible extented to valve ( so bias adapted ) EL 502 or PL 502 .
bye all ...
PS ² : good write french , me English is very bad , not problem ...😀
so me build is progréssive 😉
so long build for first " ON " so not error ...
thank for me help so UF4007 , so possible use BY299?
hum...me shéma is build to me head 🙄, no problem for posted to later so good possibility the clone for all 😉
PS: me possible extented to valve ( so bias adapted ) EL 502 or PL 502 .
bye all ...
PS ² : good write french , me English is very bad , not problem ...😀
Attachments
Hi Jean,
what are you going to build? SE or PP?
I´m asking because i plan a "El Cheapo" PL504 PP (maybe next year).
A PCH200 with the "H" as a pre and the "C" as a phase-splitter(Concertina).
However:
Good luck,
Hilmar
what are you going to build? SE or PP?
I´m asking because i plan a "El Cheapo" PL504 PP (maybe next year).
A PCH200 with the "H" as a pre and the "C" as a phase-splitter(Concertina).
However:
Good luck,
Hilmar
Since you're going to made a Single Ended amplifier, are your output transformers gapped ? Otherwise they will saturate badly from DC current through primary!
Also i suggest to run the EL504 in triode mode ( good linearity , low rp ).
Also i suggest to run the EL504 in triode mode ( good linearity , low rp ).
hello Tesla88 ,
the " OPT 3K " is build " Dissident " FR " , so very good build to Y.M to forum = = ) Audiyofan.org • Page d?index
and only use EL 504 for build Penthode , no use build to " Triode " , me use so good way to CR ( approximatly 10 K to not bad sinusoîdale 1 Khz at 8 Ohms ) .
😉
thank for appréciate me build
hello all ,
the schema final .
Caution , so possible use EL or PL to 6.3 V or 26 V for heater valve penthode and EL 502 or PL 502 .
the OPT is build to Dissident audio to 3 K primary and 4 or 8 or 16 Ohms for hp
the schema is ok for 1 way , so up 2 way for stéréo 😉
happy end 😀
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