the schematic I made up, its a low pass, a bandpass and a high pass. Works essentially in a different layout, just creates too much noise, maybe because I put ground into a loop instead a star. The dummys I left in there in case I have to change the frequencies, in paticular for caps its hard to find particuar values, so can make it up for some in series or parallel.
This board is an replacement for the old board so it has to have same size and same holes, because its in my amps already.
And it should be single layer, GND I put on top just for demonstration.