Quoted from davids1024:I just received my shaker motor from stern for my Metallica Premium. It came with an additional PCB, something to do with filtering for the flippers I think. Does anyone know if it is necessary and where does it go?
Yes. You need the PCB. It should be installed on the inside of the cabinet near the shaker so the wires reach. There should be installation instructions included with the shaker, but here is a video that shows you exactly how to do it ...