kevin gilmore's latest activity
  • kevin gilmore
    kevin gilmore replied to the thread The Stax Thread III.
    no difference. so it goes like this. just about every stax amp solid state or tube uses the same power transformer spec. the...
  • kevin gilmore
    kevin gilmore replied to the thread The Stax Thread III.
    a ccs modified t1 will have about 30 volts less vppss than a 717.
  • kevin gilmore
    kevin gilmore replied to the thread The Stax Thread III.
    the current source vs the resistors is in the 3rd stage (vas). the output stage on both the 717 and 727 are emitter followers with...
  • kevin gilmore
    the s590 has the mediatek chipset and will rip sacd's out the ethernet port with the appropriate software on a usb stick. then you can...
  • kevin gilmore
    kevin gilmore replied to the thread The Stax Thread III.
    The koss amplifier is not deliberately equalized below 200hz. Its an AC coupled design, and the physical size of the 1kv coupling caps...
  • kevin gilmore
    kevin gilmore replied to the thread The Stax Thread III.
    no 3rd stage current source in the 700s. reason: no current production >700v pnp transistors. first 2 stages identical to 717. 3rd and...
    • stax_700s_platine.jpg
    • 202005_Stax_SRM-700S-4.jpg
  • kevin gilmore
    anyone with a dead 211 to be used as a physical example? or 845 or 805 or 810... concerned with the quality of the one and only...
  • kevin gilmore
    kevin gilmore replied to the thread The Stax Thread III.
    real current sources in the 727 at the top of the 3rd stage. as opposed to just resistors. real power is voltage * current * cosine(...
  • kevin gilmore
    kevin gilmore replied to the thread The Stax Thread III.
    The srm717, srm727, 500S and 500T are all the same voltage power supplies, and roughly the same current in the output stage. 500t is a...
  • kevin gilmore
    A HeadAmp Gilmore CFA3 DX Edition under assembly
  • kevin gilmore
    kevin gilmore replied to the thread The Stax Thread III.
    turns out i had the simulation for the srm727. in distortion graphs, top trace is 2nd harmonic, bottom trace is 3rd harmonic. the...
  • kevin gilmore
    kevin gilmore replied to the thread The Stax Thread III.
    that is a great deal of work. i already had the t1 simulation done many moons ago. and all the spice models that go with it. for the...
  • kevin gilmore
    kevin gilmore replied to the thread The Stax Thread III.
    with virtual pot adjusted to 5% under clipping. spec on t1s is 320v power supplies, except in the real world its 350. full simulation...
  • kevin gilmore
    kevin gilmore replied to the thread The Stax Thread III.
    here is a synthesis of srm-t1s with 1vrms input, 120pf load. feel free to do your own synthesis with ltspice, or your choice of spice...
    • srmt1s.jpg
  • kevin gilmore
    kevin gilmore replied to the thread The Stax Thread III.
    t1(all versions) 006t,007t,313,323,717,727,400t,400s,500t,500s,t8000,d50 all have the same +/-350v power supplies. its the current in...
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