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PIoneer Tuning Fork Load Box Help!

Mrcoolest123

New Member
Hello guys!

Sorry to bother again, but this time I am really confused about an electronic system.

I have learned a lot about basic electronic components reading the pioneer tuning fork series, and by reacherching basic electronic theory online, but I cannot seem to solve this problem.


On page 32 of the first tuning fork guide, the manual shows the schematic to a load box, which I decided to build, but the circuit has me puzzled by some of its components.


The components list is nothing out of the ordinary, but i dont have the single idea what a “ switch Siemens type” is, and by researching this switch on the internet only brings a brand specialized on the production of internet cable connectors of the same name.


I think these switches are the ones represented in the diagram by Monitor S3-1 and S3-2, but I'm not sure. (I have a feeling these 2 parts are either some kind of audio jack, because the symbol is similar to a p2 audio jack schematic symbol, or maybe a 3 position 12 pin lever switch).


If someone could forward some information about the switch, or an updated version of the diagram I would be very thankful.


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