Recent content by RV59

  1. RV59

    Problems restoring Harman Kardon TA-5000X

    What is the value of this resistor on your unit? Mine is 220 Ohms, but It's strange cause normally it's 330 Ohms on the schematic. Also do you get the complete schematic?
  2. RV59

    Marantz Eighteen (18) "pop" sent to speakers when powering off

    there are also 2 capacitors (C4 & C5) in parallel with the switch, to limit the electric arc to the interruption of the device. Make sure they're well connected, and in good condition.
  3. RV59

    Marantz 18 Transistors

    my contribution: Q11, Q14, M 34-1000: 2N3055 Q12, Q13, M 34-1001: MJ2955 Q1, Q2, Q4, Q5, M 34-1014: 2N3568 KSC945C Q3, Q6, M 34-1013: 2N3638 KSA733C Q605: M 34-1012: (fet) 2N5460 Transistors scope: 2SC2611
  4. RV59

    Marantz 18 scope not Working how to check if scope is faulty

    I was sure my system would be useful to others. Glad to see that this is the case. :) I will even advise those who have a Model 18 with a good transformer to make the modification anyway, in advance in order to avoid burning the transformer completely, which are not found.
  5. RV59

    Marantz 18 vs marantz 19 Receiver HELP PLZ!!

    This is exactly what I mind when I said "with a better technical and aesthetic design", and this is why I would not advise a Model 18 to anyone who have no knowledge of electricity or who would not "put their hands in the sludge". Since Model 1 & 2, marantz has always used Spragues...
  6. RV59

    Marantz 18 vs marantz 19 Receiver HELP PLZ!!

    The Model 18 is the only receiver designed by Saul Marantz, Sid Smith and Dick Sequarra. The Model 19 is a copy of the Model 18, designed by Superscope, with a better technical and aesthetic design but the components are significantly less good qualities. Personally I prefer Model 18, but I...
  7. RV59

    Welcome to the world of James B. Lansing

    Thank! Great look. I will use it to make enclosures. (for speakers Altec 416-8A & 802-8D/811 horns).
  8. RV59

    Welcome to the world of James B. Lansing

    What is the right speaker?
  9. RV59

    What is the best sounding Marantz Receiver?

    I've had or still own Model 18, 22, 2225, 2230, 2240, 2245, 2270, 2325. All are excellent receivers. My preference goes to Model 18 (I own 3 now), Model 2245 & 2325 are nice too.
  10. RV59

    Marantz 18 Amp Issue

    which reference did you use instead of Q9?
  11. RV59

    Marantz: Made in USA vs Japan

    What is the Serial Number of your Japanese Model 19?
  12. RV59

    What exactly makes a 2330 better than a 2325?

    How do you know that it's a Sanken or Toshiba transistor?
  13. RV59

    Marantz 18 Amp Issue

    I use 2N3055 (NPN) for Q14, MJ2955 (PNP) for Q13, 2N5195 (PNP) for Q10 and 2N5192 (NPN) for Q9. Work fine. Hope to help.
  14. RV59

    Installation of a replacement transformer for the oscilloscope of the Model 18.

    No, it only takes some technical knowledge. The main difficulties were finding someone to make custom transformers, and what output voltages to choose. What continuous tensions do you get? (-500 & 6.3)
  15. RV59

    Marantz 18 scope fixable??

    18-2018 down, 18-7460 up. Both are clean.
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