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1940s/1950s tech

  1. sae-7125

    heathkit w-5m renovations [boondoggle edition] quantum vacuum deep dive

    posting some basic notes and measurements (photo journal) for an ongoing project that will eventually have "edited highlights" posted in the season-2 bench thread (also ongoing) since season-1 has reached q&a mode. starting with a somewhat minimal familiarity in regards to "foundation era" tube...
    • sae-7125
    • Thread
    • 1940s/1950s tech david theodore nelson williamson heathkit irreplaceable history monaural output monophonic original design issues tube amp vintage time capsule w-5m
    • Replies: 343
    • Forum: DIY
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