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  1. Gepetto

    PL2000 Series 2

    Capacitance does divide in half. If you put 2 electrolytics back to back then be very sure to parallel with the film cap. Other than low ESR type caps (and those are not really very good either, they are just better) electrolytics do not have great high frequency characteristics. That is one...
  2. Gepetto

    PL2000 Series 2

    Those rules are like my other rules... Check your test equipment first, it almost always is that which has you chasing your tail And my rule that makes Lee laugh; Old Digital is just Old Digital...
  3. Gepetto

    PL2000 Series 2

    Try hard to NOT have any caps in the direct audio path. 3 rules to live by...
  4. Gepetto

    PL2000 Series 2

    If you MUST have a cap in the direct audio path, try to make it a polypropylene film type.
  5. Gepetto

    PL2000 Series 2

    If you MUST use an electrolytic in an audio path because you need very large capacitance, make sure it has a companion non polar film type in parallel with it. The electrolytic will take care of the low frequency task and the film will take over from there. Like a speaker crossover.
  6. Gepetto

    PL2000 Series 2

    Small value caps in phono stage or other stages where the cap value is <300 pF generally speaking. Ceramic caps may be there now.
  7. Gepetto

    PL2000 Series 2

    And CDE for Mica
  8. Gepetto

    PL2000 Series 2

    Hi Al My first recommendation for large size caps is (Wima or Panasonic) Polypropylene Film, for very small values it is always CDE Mica.
  9. Gepetto

    PL2000 Series 2

    I have the schems if you need them. Very simple preamp.
  10. Gepetto

    PL2000 Series 2

    2 of them unfortunately, only one really counts, C131.
  11. Gepetto

    Another day late, dollar short story LOL

    That's how they/we sell computers Jer... :-)
  12. Gepetto

    New Technics SL-1210 MKII

    My all time favorite...
  13. Gepetto

    PL2000 Series 2

    Looking at the schematic, there are only 2 electrolytics in the main signal path (if you have tone out and are using an input other than phono). Primarily C131 and secondarily C107. Both are 22uF. Any other cap you replaced does not matter to the signal path.
  14. Gepetto

    PL2000 Series 2

    Do you have the 3600 manual to share? I doubt your caps are the culprit if you replaced them with Nichicon Muse.
  15. Gepetto

    PL 400 series 1 XPL910 questions

    You need the backplanes to convert it to full comp...
  16. Gepetto

    PL2000 Series 2

    The original op amps used by PL were nothing to write home about. I designed back in the mid 70s with the original uA739 decompensated op amps. They were a 741 that externalized the compensation components to tailor the performance for your application. I used them for tape head amplification...
  17. Gepetto

    My Pioneer Rack and Everything in it Plus....

    Don't really blame you Lee...
  18. Gepetto

    My Pioneer Rack and Everything in it Plus....

    Have you listed any of it on Ebay Lee? Yes that is a lot in one lot.
  19. Gepetto

    PL700B's...White Oak or Pine Box

    only in full saturation of the negative rail side, other wise it is just a current sense resistor.
  20. Gepetto

    Phase Linear 400 Odd Heatsink.

    Maybe I am too subtle... :-) Will be more assertive the next time :-) The control board electronics are truly loafing in there, huge overkill...
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