chas.wahl's latest activity

  • chas.wahl
    McMaster has the red ones, silicone, slightly smaller durometer, somewhat more money ($9+ for 25 of the ones for 1/4" hole), much higher...
  • chas.wahl
    chas.wahl replied to the thread Planning a 5F2a.
    Tube and knob counts look a bit high for a 5F2-A. My hat's off to anyone who can handle a PtP build.
  • chas.wahl
    chas.wahl replied to the thread Planning a 5F2a.
    Brimar says potayto: Others say potahto: RCA Receiving Tube Manual 19?? GE 1955 Tung-sol 1959 RCA 1961 And finally, we have...
    • Brimar 5Y3GT 19??.jpg
    • RCA 5Y3GT RTM 19??.jpg
    • GE 5Y3GT 1955.jpg
    • Tung-Sol 5Y3GT 1959.jpg
    • RCA 5Y3GT 1961.jpg
  • chas.wahl
    chas.wahl replied to the thread Planning a 5F2a.
    Same circuit, but note that the power transformers listed on 5F2-A and 6G10 are different (66709 vs 125P1A). I believe there's a change...
    • 5F2-transformers.jpg
    • 5F2-A 1960-61 transformers.jpg
  • chas.wahl
    chas.wahl replied to the thread Use SPDT in place of SPST?.
    And if, as a minor consideration, you wish to minimize the number of lugs that are "hot" when the switch is in the "off" position, I...
  • chas.wahl
    chas.wahl replied to the thread Planning a 5F2a.
    I will try to follow this up in the literature (to understand what's the difference between "choke input to filter" and "capacitor [or...
  • chas.wahl
    chas.wahl replied to the thread Planning a 5F2a.
    I think that's an interesting question too, but from the little I know about chokes vs dropping resistors, a choke won't drop the B+ as...
  • chas.wahl
    chas.wahl replied to the thread Planning a 5F2a.
    @Phrygian77 pointed this out obliquely, but maybe it's better to be explicit: the 5F2-A and 5F2 have a significant difference in the way...
  • chas.wahl
    chas.wahl replied to the thread Super Single-Ended Project.
    The same concept was done, with some simplification, by Dave Hunter in his book "The Guitar Amp Handbook", apparently 10 years later...
  • chas.wahl
    Your saddles and mine, from the side view, seem to have about the same height (like you, my first partscaster) -- about half exposed...
  • chas.wahl
    chas.wahl replied to the thread Suntan for Partscaster.
    I think that depends: I bought a very nice single-ply "parchment" colored pickguard from Callaham (when he still sold them; now only...
  • chas.wahl
    Forgive me if this is an ignorant question, but: isn't the voltage rating of a power transformer "at rated current load"? Are you...
  • chas.wahl
    chas.wahl replied to the thread Desktop Champ.
    Thanks for that -- about the same size as a Hammond 1590DE, what I was planning to use to house one of the @johnDH attenuator designs...
  • chas.wahl
    chas.wahl replied to the thread Desktop Champ.
    Nice job! What is that box spec?
  • chas.wahl
    Sure enough. I thought that it looked like a project that had stopped, and I'm glad to see that it didn't.




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