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trim pots

  1. deckar01

    Ribbon Mics, PCB Etching, and Circuit Tuning

    Hello, I’m a 34 year old software engineer in Tulsa, Oklahoma (USA) that just completed an associates degree in Electronics Technology at my local community college (TCC). I am considering continuing at OSU in the fall. I previously studied CS and Math at NSU (Tahlequah) and have been an open...
    • deckar01
    • Thread
    • mic from scratch pcb fabrication software trim pots
    • Replies: 13
    • Forum: Introductions
  2. robz2000

    Sansui bias help

    Hey everyone. This is my first post here so apologies if in the wrong place. My issue is, and I have had this happen twice now, on a sansui 661 (or 771) the bias sits at 29 to 31 and doesn't move past that. If I turn the trim pot, it'll go up or down 1 mv. Same behavior both channels. The...
  3. VintageMad89

    2235B Bias Trim Pot

    Hi all, one of the bias current trimming resistors (R767) on the power amp board has gone bad and I am looking for a suitable replacement. The service manual says it is 200Ohms but I'm at a bit of a loss as to what I'm looking for:idea: Any pointers would be most welcome! Cheers guys
  4. W

    Dual CS 503-1 speed adjustment trim pots

    Hello, I've been playing records on a recently acquired Dual CS 503-1 which, for most Dual fans, is an entry-level hi-fi deck. While I'm awaiting the arrival of a new belt (the old performs still acceptably), I want to address a speed issue. The iPhone app Turnabulator indicates a 4-6% speed...
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