I don't see any capacitors involved. Since there is only one in and one out, it's safe to say the entire circuit is in series. Nothing shunts to ground. Therefore the circiut is something like this:
0---vvv-vvv-vvv----uuuu---->
with "vvv" representing a resistor and "uuu" representing a coil. "0" and ">" representing the input and outputs.
Somewhere around there the switch bypasses some or all of it.
Clearly someone was playing with a bass cabinet somehow.
Best,
E
0---vvv-vvv-vvv----uuuu---->
with "vvv" representing a resistor and "uuu" representing a coil. "0" and ">" representing the input and outputs.
Somewhere around there the switch bypasses some or all of it.
Clearly someone was playing with a bass cabinet somehow.
Best,
E