If you could test the 5V injection on Pin4 I would very much appreciate
While I have been reviewing things over and over again this morning I found this pretty recent update fom PeterPan on 3500 connectivity, interestingly its seems that this would be a special "combined" cable for mk1 and mk2 and correspond with your findings that the L/R audio lines could be reversed, see yourself, file name says it all -> For alle Beolab 3500 .. interesting ...
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