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JoaMat

High Rollers
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Everything posted by JoaMat

  1. Thanks for your advice Kevin. I´ve changed tube and replaced all three transistors – Q11, Q12and Q25 but the problem is still there. The plate voltage is as you predicted +500 V. What could next step be? I guess that the faulty 60 volt supply is due to something happened in the amp or could it be that a -300 V and -600V from the PSU have caused problem with the amp?
  2. I finished the building of my T2 clone a week ago. The building process went very smoothly and the amp have played just wonderful until last evening when a “gunshot” was heard and there was just noise in the phones. The PSU 60 Volts section measured almost 100 V, just a few volts less then unregulated voltage. May it be the TL783 that has given up for some reason? I took a 60 V supply that was at hand to get all voltages correct from the PSU and connected the Amp. Left channel worked as it should – right channel was dead. Right channels active batteries measure 523 V (-510 and +13 vs ground) and 546 V (-533 and +13 vs ground). All LEDs are lit except D10 and D11. What could be the problem with the right channel? HELP wanted and needed! Joachim
  3. Rodrigo, Connectors arrived today. The feeling when inserting the headphone is wonderful. Your concern to get a good connector is most appreciated Thanks for all the time and work you have put into these Stax connectors. /Joachim
  4. Heat sink for LME498**: http://www.aptaudio....PA_Parts_1.html
  5. Well done Greg!
  6. No, I can´t say I noticed any difference between them two. I also changed the high voltage from +/- 450 to 500 volts so it isn´t really possible to compare them.
  7. OK. I´ve the onboard type and started with the ”1968 current source” and after a week I changed to ixys. Both variants have worked without any problems for me. But since you have the offboards I guess I won’t be much of help for you.
  8. blubliss, What type of PCBs are you using - with or without onboard heat sinks?
  9. horio, I have feeling that I accidental changed your number of Jacks in the sign up sheet. Maybe you better check that up. I´m very sorry. /Joachim
  10. I´m interested in four connectors.
  11. Deepak, Thanks for the info. Tran connected me earlier today and he has promised to send one set of the T2.
  12. Deepak, If anyone of the T2 buyers cancel the buy of a T2 set - I happily buy one T2 set. Just PM me. And THANKS!! to you guys that have made this group buy possible.
  13. Hi Lil Knight, If it´s still possible I´ld like to join in for: 1 set KGSSHV offboard and 1 set KGSSHV onboard Thanks for your initiative.
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