JimL11
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    • JimL11
      JimL11 replied to the thread Stax SRM-T1 Repair, Re-Cap, Mod.
      That should be adequate heat sinking. I am assuming you are using ceramic high voltage insulators and heat sink grease to attach the...
    • JimL11
      JimL11 replied to the thread Stax SRM-T1 Repair, Re-Cap, Mod.
      Mouser is a reliable supplier - that's where I get my FETs. So there are a couple possibilities. The DN2540 regulates the current, so...
    • JimL11
      JimL11 replied to the thread Stax SRM-T1 Repair, Re-Cap, Mod.
      That is a subjective question so it depends a bit on what your sonic preferences are. I had a 727 with global feedback mod, and I...
    • JimL11
      JimL11 replied to the thread The Entry Level Stax Thread.
      Looks like the JJs are equivalent to 6SN7GTA/GTB, which have higher voltage and power ratings than standard 6SN7 tubes. So they can be...
    • JimL11
      JimL11 replied to the thread The Entry Level Stax Thread.
      Dominic Stritt is "firschi" on Head-Fi. The CCS mod is what I published in AudioXpress, July 2017. This substitutes a cascode MOSFET...
    • JimL11
      JimL11 replied to the thread KOSS ESP-950 Thread.
      Well, the Koss energizer has a bit higher bias voltage and power supply voltage, but it has pretty low current capability (according to...
    • JimL11
      JimL11 replied to the thread The Stax Thread III.
      Perhaps that is because the SRM-1 never had XLR inputs to begin with. Prior to the SRM-T1S, all of the Stax amps had single ended RCA...
    • JimL11
      JimL11 replied to the thread The Stax Thread III.
      I don't know if putting a 10 ohm resistor in parallel with the SRD-7 will fix your distortion problem or not, but it probably won't...
    • JimL11
      JimL11 replied to the thread Stax SRM-T1 Repair, Re-Cap, Mod.
      Well, it's not that complicated a circuit - 2 MOSFET's and 3 resistors plus a trim pot per current load - you need 4 current loads...
    • JimL11
      JimL11 replied to the thread Stax SRM-T1 Repair, Re-Cap, Mod.
      Are you looking to do it yourself or are you looking for someone to do it for you? Where are you located?
    • JimL11
      JimL11 replied to the thread Stax SRM-T1 Repair, Re-Cap, Mod.
      Not specifically, but the idea is the same. Are you referring to the 007Tii (uses 4 6FQ7 tubes) or the 700T (uses 2 6SN7 tubes)? Both...
    • JimL11
      JimL11 replied to the thread Stax SRM-T1 Repair, Re-Cap, Mod.
      No idea, if we are talking 2V for the LED and 100V zener, that's 50 LEDs give or take, which is a pretty long chain. That will generate...
    • JimL11
      JimL11 replied to the thread Stax SRM-T1 Repair, Re-Cap, Mod.
      Don't forget that even if an individual LED is quiet, lots of LEDs in series will have their noise add up.
    • JimL11
      As far as I know there is not an authorized "727" mod for the KGSS, nor is there a Stax SRM-007t that uses the 6S4A. Spritzer did mod an...
    • JimL11
      JimL11 replied to the thread The Entry Level Stax Thread.
      The T1/006 amps use the 6CG7/6FQ7 output tube, which is a 9 pin miniature tube that is similar to the older 6SN7(GTB?) octal output tube...
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