Anyone know what these are

OK, so it's a little more complicated. It looks like there are 4 resistors, which I assume are in series with the coil.

Not sure what the switch will do exactly. It could bypass everything, or just the resistors, or just the coil.

Was this system using horns/pa type of setup? if so maybe the user was experimenting with the bass configuration.

It is probably very cabinet specific, and my guess is it was more of a hack/experiment.

Best,


E

Does the other one (not pictured) have a red or black binding post? Are they identical inside?

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

 Yes there are electrolytic caps. Low pass passive crossover in my estimation.