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EL84PP, a simply circuit
EL84PP, a simply circuit
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Old 4th October 2021, 10:49 AM   #11
huggygood is offline huggygood  France
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EL84PP, a simply circuit
@ Walter.
would you like to start a small pcb production?
I have a lot of EL84 and good output transformers in my stock.
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Old 4th October 2021, 10:57 AM   #12
waltube is offline waltube  Italy
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Hi

the OT are custome made for me.
About 84 please let me know the brand and quotation

Walter
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Old 4th October 2021, 11:01 AM   #13
waltube is offline waltube  Italy
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to 6A3,
thx for appreciation.
The sound is very fine.
About OT I will give, for info the specification and the costs with p&p

Walter
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Old 15th October 2021, 04:27 PM   #14
brimax is offline brimax
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hi walter ... how does it sound compared to well known EL84 amplifiers (eg Leak Stereo 20 I've heard some months ago)? thx
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Old 15th October 2021, 05:27 PM   #15
kevinkr is offline kevinkr  United States
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EL84PP, a simply circuit
Looks great Walter! The output transformer sounds very interesting.
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Old 16th October 2021, 05:53 AM   #16
waltube is offline waltube  Italy
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to huggy
the pcb are arriving soon.
They cost 25eu. each + p&p



to brimax
I know very well the Leak that is a reference , but also other stuff.
Due the OT trafo with an high ratio I lost just few power ( 8 ohm resistive load) but it is capable to drive complex loudspeaker with a good efficency.
The sound seem to be very complete from bass to high with more "life" respect the Leak (p.e.)


to Kevinkr
The OT is very good stuff as the test lab says.
The little company who wound thse types of trafo use a beautiful machine comes from a hiend brand in Switzerland; I consider it is the best machine ( it is old ) to wound perfectly the bobbin. This is one of the major step I have seen.
Also the C core 0,1mm laminated helps. ( I use only C core on OT trafo)
I have ready also a s.e. for 300B and is coming a p-p for EL34/KT88
The costs are not low ( also because the numbers of production are not high)
All OT for p-p are always with one single tap on secondary and no UL connection ( only under request); in my opinion the tetrode/pentode connection is more exiciting.


I am preparing also a internet page to list the stuff with all real test lab.
With a help of my friend in Audioelettronica


Walter

Last edited by waltube; 16th October 2021 at 05:58 AM.
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