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"WZMAK" - That is, an amplifier on 6P6S, ECC82 and EF86

Pltin74 3291 39
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #31 21521248
    acctr
    Level 38  
    pawlik118 wrote:
    People, this mistake is already made often enough that it cannot be eradicated in a moment.
    .
    Consider that you probably don't understand self-irony.
    Helpful post? Buy me a coffee.
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  • #32 21521252
    rosomak19
    Level 23  
    If I may, using the subject matter, ask the professionals if a 5k ohm 15W speaker trafo would be good for the PCL805 tubes in PP ?
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  • #33 21521271
    Pltin74
    Level 7  
    >>21521252 it would be best to count the operating point from the curves for class AB. As far as impedance is concerned, if you want to get the most out of the pentode I would suggest you draw the curves and see if you get the maximum power. https://valvewizard.co.uk/pp.html - here is how to calculate it
  • #34 21521361
    rosomak19
    Level 23  
    I generally wanted to go for the easy way and use the circuit from the B&O 608 , or Orgaphon 24 mh .
  • #35 21521397
    pikarel
    Level 38  
    acctr wrote:
    pawlik118 wrote:
    People, this mistake has been made often enough that it won't be eradicated in a while.

    Consider that you probably don't understand self-irony.

    Let me explain:
    -aut irony would be if the writer referred the word - committed - to one amplifier made and the amplifier would be a dud, play badly and the author would not be happy with it.
    If he has made as many as four amplifiers and still boasts about it as successful constructions - it is simply a mistake of misunderstanding (the other way round) the meaning of the word he used.
    This phrase - I have done something - is newspeak and is used by a certain circle of people on a regular basis; it has simply become fashionable.
    Instead of I did, I made, I built - the opaque I committed .

    And the author's amplifier - if he is happy with it and learned a lot while building it - is a good build, I applaud such DIY.
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  • #36 21521418
    Pltin74
    Level 7  
    >>21521397 as for speech, it's like with everything, without misrepresentation there would be no progress. There is nothing to "explain", let's enjoy life and the wonderful conversation about lamps ;) .
  • #37 21521711
    pikarel
    Level 38  
    Pltin74 wrote:
    >>21521397 as for speech, it's like with anything, without misrepresentation there would be no progress. There's nothing to "explain", let's enjoy life and a great conversation about lamps ;)
    .
    I can even feel it from your speech, this progress (sorry, meant to be fashionable) this progression.
    Wait, wrong; not sorry, but sorry or parda.
    And wrong again; sorry to be trendy, now it's leprechaun.
    I have plunged...

    E there, any spelling and syntax, spelling and grammar; the important thing is to be hepi and enjoy the lajw :)
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  • #38 21521756
    Pltin74
    Level 7  
    >>21521711 I recommend melise
  • #39 21523056
    acctr
    Level 38  
    pikarel wrote:
    aut irony would be if the writer referred this word - I committed - to one piece of amplifier made and the amplifier would be a dud, play badly and the author would not be satisfied with it.
    .
    You are standing up for your colleague, you certainly had good intentions, but unfortunately you don't understand self-irony either.
    I suspect that without the ability to recognise it, reading literature more challenging than a t.v. programme is an ordeal for you.
    Recognising auto-irony, tragedy or pathos in a text is part of the requirements of the primary level maths exam, but I won't write that ignorance of such treatments is a cause for shame, because some people do indeed have a problem with it, just as they do with defining left-right.
    Helpful post? Buy me a coffee.
  • #40 21523069
    Pltin74
    Level 7  
    >>21523056 I started this topic to show off my project and to get other forum members' opinions on it - not so that some people, because of whom Elektroda has the reputation it has, can practice their favourite hobby, that is, being - excuse me - a man with a stick you know where. Therefore, please spare yourselves and vent your frustrations elsewhere, not in this thread :) .
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Topic summary

A DIY tube amplifier project based on 6P6S, ECC82, and EF86 tubes evolved over four years from an intended Ampex 2012 clone to a custom design due to issues with input pentode gain and power output. The builder addressed hum problems by implementing a star ground topology and replacing a choke with a capacitance multiplier. Output transformers from P. Ogonowski were used in a push-pull configuration. The amplifier features a minimalist front panel with visible screws and 3D-printed transformer covers made from PET-G material, chosen for heat resistance up to 80°C. The design includes a fixed bias phase inverter circuit, which sparked discussion about potential risks of tube aging and distortion. The input selector switch is located on the rear for aesthetic reasons. Component choices such as the negative feedback resistor and volume potentiometer were discussed, with suggestions to use quality parts like an Alps 50k potentiometer. The project also touched on tube equivalences and differences, clarifying that PCC88 and ECC88 tubes share characteristics except for heater parameters. The community exchanged advice on circuit improvements, transformer impedance matching for PCL805 tubes, and practical construction tips. The thread concluded with encouragement for DIY tube amplifier building and a focus on enjoying the process and sound quality.
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