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mystery devices

  1. F

    Help identifying mystery eBay speakers.

    TLDR, Im looking to upgrade my old speakers. Some sonys I found for free on Facebook, stumbled onto this listing of some speakers but the seller doesn't know the brand. A few days worth of research and I haven't pulled anything. On some photos the seller listed it has a catalog number with...
    • fishstics
    • Thread
    • 1960's mystery devices speakers
    • Replies: 7
    • Forum: Speakers
  2. oldvinyldude

    What type of "pot" is this?

    I bought a BK Precision signal generator recently. As the output frequency was erratic, I opened it up, and cleaned both frequency (coarse and fine), pots, and I am glad to report the output is now consistent. I looked at other pots that might benefit from cleaning, and noted a group of devices...
    • oldvinyldude
    • Thread
    • bk 3011b mystery devices
    • Replies: 6
    • Forum: DIY
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