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

9 replies

KolfMAKER

Bronze

569 posts

Posted August 5, 2022 at 09:12 GMT ? Edited August 5, 2022 at 09:17 GMT

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.

Location: The Netherlands

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mexking

Bronze

6777 posts

Posted August 6, 2022 at 17:32 GMT ? Edited August 6, 2022 at 17:32 GMT

#693354

Dimensions all mm.

Location: Mexico city

Retired Printing machine technician Restored various 1960-70 items Rock and Roll music Collecting Vinyl Restored Jukebox Wurlitzer 1050

matador

BronzeModerator

2424 posts

Posted August 6, 2022 at 18:23 GMT

#693355

THIS IS GOOD BEOWORLD !!!

Location: Paris France

KolfMAKER

Bronze

569 posts

Posted August 6, 2022 at 18:29 GMT ? Edited August 6, 2022 at 18:31 GMT

#693356

@Mexking This is perfect information, thanks so much !!! I will start to re-produce the original BeoGram RIAA preamp. Fantastic!

Location: The Netherlands

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KolfMAKER

Bronze

569 posts

Posted August 8, 2022 at 18:11 GMT

#693395

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

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

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mexking

Bronze

6777 posts

Posted August 8, 2022 at 19:18 GMT ? Edited August 8, 2022 at 19:18 GMT

#693396

Your trace pic is view from component side, here my pic from solder side, black dots are ground (neg.) connections

Location: Mexico city

Retired Printing machine technician Restored various 1960-70 items Rock and Roll music Collecting Vinyl Restored Jukebox Wurlitzer 1050

KolfMAKER

Bronze

569 posts

Posted August 8, 2022 at 21:36 GMT

#693397

@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.

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mexking

Bronze

6777 posts

Posted August 8, 2022 at 23:39 GMT

#693399

Notches 2.5 mm

Location: Mexico city

Retired Printing machine technician Restored various 1960-70 items Rock and Roll music Collecting Vinyl Restored Jukebox Wurlitzer 1050

chartz

Bronze

240 posts

Posted August 9, 2022 at 07:57 GMT

#693401

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

Jacques

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