Speaker Wiring Help

That is a 2 microfarad nonpolarized electrolytic capacitor, 50 volt working voltage.

You should be able to find a replacement from speaker parts suppliers.

The important thing (aside from the correct capacitance value, 2 uF) is that it is nonpolarized.
Also, it should be rated at least 50 V; higher generally won't hurt, but don't go a lot higher.

Standard electrolytics are polarized and cannot be used in speaker applications. Speaker parts
suppliers commonly have these nonpolarized types, but any large electronic parts supplier should
have them also.

I'll take a quick look.

That capacitor basically forms a simple crossover to pass the higher frequencies
to the horns and block the lower frequencies from reaching them.

Also, in the good old days, mfd was used for microfarad.
Nowadays, it's uF. That 'u' represents the greek letter mu, for micro.

 

If you can't find nothing closer, this would probably work just fine:

http://www.parts-express.com/pe/showdetl.cfm?partnumber=027-324

Also, I added a couple notes to my first post, just for some extra information.