I opened up the Focals today just to get a peek inside at what's in the crossover. It's pretty simple, but I'm having some trouble identifying values for some of the components. I've also been trying to sketch out a circuit diagram for it, but there are no clear paths on either side of the PCB I have to go through and find continuity between each component.
Here's a picture for reference:
The components which are clearly marked are the two resistors (7W/0.9Ohm and 10W/0.3Ohm) and the three capacitors (12uF/63V bipolar, 2.7J/100V, 5.6J/100V). I'm not certain on the values of the inductors, because they aren't marked.
My questions at this stage are:
What do 2.7J and 5.6J mean as marking on capacitors? Is that meant to be 2.7uF and 5.6uF?
How do I go about figuring out values for inductors? Or, if I'm planning on replacing things, should I just leave them stock?