BeoGram 1000 Pre-Amp PCB: what are the dimensions?

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Home Forums Product Discussion & Questions BeoGram BeoGram 1000 Pre-Amp PCB: what are the dimensions?

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  • #36652
    KolfMAKER
    BRONZE Member
      • The Netherlands
      • Topics Started 28
      • Total Posts 228

      I am trying to recreate the original Pre-Amp PCB for the BeoGram 1000.

      So far, I have the images of the copper traces, including a drawing of the placement of the components and the specs of those. Now I only need to know the exact dimensions of the original Pre-Amp PCB board.

      Question
      Who can help me find the dimensions. In the picture below I have marked the dimensions I am looking for: A – E.

      Schermafbeelding 2022-08-05 om 10.02.50

      #36653
      mexking
      BRONZE Member
        • Mexico city
        • Topics Started 6
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        Dimensions all mm.

        BG 1000 prea

        #36654
        matador
        Moderator
          • Paris France
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          THIS IS GOOD BEOWORLD !!!

          #36655
          KolfMAKER
          BRONZE Member
            • The Netherlands
            • Topics Started 28
            • Total Posts 228

            @Mexking

            This is perfect information, thanks so much !!!

            I will start to re-produce the original BeoGram RIAA preamp.

            Fantastic!

            #36656
            KolfMAKER
            BRONZE Member
              • The Netherlands
              • Topics Started 28
              • Total Posts 228

              At the moment I am in preparation of making the PCB. My first step is to get the copper traces on a board.

              Therefor I have to position and size the image of the copper traces perfectly. I have that picture (see picture below), but it has no outer/PCB border lines, so I have to find out how to size and position this image. (Obviously to get size and proportion equal to the original PCB)

              Questions

              1. Does anyone have such picture of the copper traces pattern, including outside/PCB border lines?
              2. @Mexking: do you have a picture of the bottom side of the pre-amp board?

               

              BeoGram 1000 - Pre Amp PCB Traces

              #36657
              mexking
              BRONZE Member
                • Mexico city
                • Topics Started 6
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                Your trace pic is view from component side, here my pic from solder side, black dots are ground (neg.) connections

                20220808_130204

                #36658
                KolfMAKER
                BRONZE Member
                  • The Netherlands
                  • Topics Started 28
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                  @Mexking

                  Thanks for sending the bottom view picture!
                  Yes, I am aware that my trace image has to be mirrored.

                  Question
                  The board side that sticks into the slot (so where the 8 tracks in a row are), has 8 notches.
                  Can you please let me know how deep they are?

                  I think they are a little less deep than the 6mm notch on the other side of the board.

                  #36659
                  mexking
                  BRONZE Member
                    • Mexico city
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                    Notches 2.5 mm

                    #36660
                    chartz
                    GOLD Member
                      • Burgundy
                      • Topics Started 3
                      • Total Posts 228

                      In fact the small PCB in the Beogram sans  phono board has the same notches. Just remove it to see!

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