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  1. marcok

    To ground or not to ground?

    Double insulation meets safety specs of most countries , except UK , AUS ... Ground means hum ( not always ) and double insulation means safety . Ciao Marco
  2. marcok

    To ground or not to ground?

    Other curiosities , related to TT , or better tone arms : -Thorens Tp16 and Rega Planar 1 arm have no ground connection. -Project Debut Carbon arm ( the same as Rega arm ) has ground connection . Ciao Marco
  3. marcok

    To ground or not to ground?

    This is the best article I found . The first part requires a theoretical skill , but the second part is very practical . My experience Is : no ground . There is an exception : U,K, Ciao Marco
  4. marcok

    Happy Easter

    Happy Easter to all ! Marco
  5. marcok

    Better stock up for your DBT

    That is the situation in Europe . Direct replacements are available for most bulbs but in case of special bulbs ( low power or hi power ) In these cases you can use halo lamps. Light dimmers are not compatible ; they must be replaced with new types . When you choose new bulbs forget...
  6. marcok

    Leave it to the tight assed Americans

    For me the principal is crazy or mad ( or both ) The real problem is the " politically correct " that now it''s becoming " calcel culture ". It' s a worldwide phenomenon . It's a soft form of tiranny ! Michelangelo will exist forever ! Ciao Marco
  7. marcok

    Hi From Long Island NY

    Welcome to Phase Linear wonderful world | Marco
  8. marcok

    PL4000 relay

    Today I have made the modification . At present I have not seen the arcing effect. Ciao Marco
  9. marcok

    Dynaco ST 70

    Thank you guys ! I have to study again ! 6G8HA. should be a good equivalent. Ciao Marco
  10. 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...
  11. 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
  12. marcok

    Dynaco ST 70

    You are right , Joe , but tubes are fascinating ! Ciao Marco
  13. 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
  14. marcok

    Hi y'all

    Ciao , Wyn ! Marco
  15. marcok

    Preamp Choices

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

    Thicker PL400 faceplate with new analog meters...

    Chapeau , Joe ! Ciao Marco
  17. 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
  18. marcok

    Happy Birthday

    Happy birthday ,Perry ! Marco
  19. marcok

    Happy Birthday nakdoc and Phase Linear Phanatic

    Happy birthday , guys ! Marco
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