Recent content by nakdoc

  1. nakdoc

    NAD 5120 Turntable Refurbish

    The phase cap simply gets the motor to turn in the pifroper direction. Typically the motor will turn with lower AC voltages, and if it does not, you'll be able to feel 60 cycle vibrations by touching the pulley. These motors are very low torque, so bearing issues are critical. I believe I have a...
  2. nakdoc

    Carver tuners

    Great sounding tuners and also great for DX (distance) listening.
  3. nakdoc

    Luxman M-02 amplifier, the dumbest amplifier ever.

    I have one of these amps and they will win most beauty contests. The design is very similar to the HK and NAD amplifiers. Mine is not as toasty.
  4. nakdoc

    Billion Watt Load Bank Build

    Instead of air cooling the bank, dunk the loads in oil. That is what the radio transmitter guys do.
  5. nakdoc

    NAD 5120 Turntable Refurbish

    That is a repurposed Philips turntable. Replace the tubular phase cap and the motor should turn again.
  6. nakdoc

    Rek O Kut B12H Rehab Thread

    You want the arm board to bond to the plinth so there is zero relative movement between arm and plinth. If they are separate, motor vibrations are maxed out by an isolated arm.
  7. nakdoc

    Now Sam is gone

    According to the NY Times obituary, Sam and Dave were not friends and did not get along. In the beginning, Dave was performing but could not remember the lyrics, so Sam got on stage to sing and guide him.
  8. nakdoc

    XLR Balanced lines for turntable to preamp, and New Preamp Design update.

    You will need to remain underground since the preamp is not UL certified. I'd advise deleting the AC outlets to reduce potential liability.
  9. nakdoc

    Funny pictures...

    Probably sounds better....
  10. nakdoc

    Bias didoe on Marantz 4230 receiver

    SVT-2H is 2 diodes in series SVT-3H is 3, SVT-4H is 4 I have a handfull of most of these if you want originals.
  11. nakdoc

    Nakamichi Dragon with Nakamichi TD-1200 playback head

    Nice work. I may be going down the same path soon with a spare TD1200 transport.
  12. nakdoc

    Restored Pioneer SA 9500 static noise

    I have one with the same problem and my noise is in the power amp. Double check your testing. It is a PIA to reach the amp boards so i am planning to shotgun the diff pairs.
  13. nakdoc

    Not So Sure

    Buy some wool felt at a fabric store and cut out little rings slightly larger than the dome diameter. Tack them on with rubber cement and play the harsh stuff. Diffraction effects often sound harsh.
  14. nakdoc

    Found 'Em

    Or go to Goodwill and buy a couple of wool sweaters. I love to stuff ports with wool.
  15. nakdoc

    Isolated Variable Transformers? Or Separate Iso and Variac? Plus a Newbie Tech Question

    I recommend an isolated variac. You never know when someone has miswired an AC plug. The isolation protects your 'scope. If you want, you can isolate the scope and not the variac. I have a used Sencore PR57for sale for $250. nakdoc77@gmail.com
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