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  1. marcok

    Dynaco ST 70

    Thank you guys ! I have to study again ! 6G8HA. should be a good equivalent. Ciao Marco
  2. marcok

    PL4000 relay

    I discovered that this relay is rated for 250 Wpc amps ( see service manual ) and infact I had some problems with PL700B . ( fixed with # 800 sand paper , but temporary ) For me shortening the contacts together is right and simplest solution . Next week I will test this arrangement . Another...
  3. marcok

    Dynaco ST 70

    If I have understood well the critical parts of this design are : - selenium diode ( replace with silicon ) - 7199 noise ( replace with 12 AU 7 ) - Quad cap ( direct replacement ) Ciao Marco
  4. marcok

    Dynaco ST 70

    You are right , Joe , but tubes are fascinating ! Ciao Marco
  5. marcok

    Dynaco ST 70

    What do you think about Dynaco ST 70 ? I 'd like to learn and to do something new . Does it sound ? Ciao Marco
  6. marcok

    Hi y'all

    Ciao , Wyn ! Marco
  7. marcok

    Preamp Choices

    AGI 511 . https://www.ebay.it/itm/154451938224 Ciao Marco
  8. marcok

    Thicker PL400 faceplate with new analog meters...

    Chapeau , Joe ! Ciao Marco
  9. marcok

    Phase Linear 4000 Rebuild - are these quirks normal?

    Welcome ! If you have the first series , disconnect all boards except line amp and tone amp (in order to use the simplest path of the signal ) and check . After insert phono board and check and so on . Furthermore ,you should replace all Rca connectors . Ciao Marco
  10. marcok

    Happy Birthday

    Happy birthday ,Perry ! Marco
  11. marcok

    Happy Birthday nakdoc and Phase Linear Phanatic

    Happy birthday , guys ! Marco
  12. marcok

    Happy Birthday Wheel-right

    Buon compleanno ! Marco
  13. marcok

    Hello All

    Welcome and ciao ! Marco
  14. marcok

    WANTED: studio monitors

    Elac Debut B 6.2 Ciao Marco
  15. marcok

    Hi from Loosyanna (Louisiana)

    Ciao from Italy ! Marco
  16. marcok

    Hello From North Carolina

    Phase Linear disease is terrible . There's no cure ! Ciao Marco
  17. marcok

    Funny pictures...

    Since I was born in 1956 I was lucky to " play" with the transition from analogue to digital . My first job was the design LC bandpass filters and the last was 3G Technical Project Leader and during my career I saw , I designed and I tasted PLL, RF , A/D and D/a converters , And I could go...
  18. marcok

    Funny pictures...

    Proud to be old ! Marco
  19. marcok

    Hello From Wisconsin

    Ciao ! Marco
  20. marcok

    Hello from northeast PA

    Ciao from Italy Marco
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