Solen 5.1uF 400V Polypropylene Capacitor

Pros: easy to work with; come in many values; relatively inexpensive; sound good
Cons: Daytons are even less expensive and probably just as good

If you're into restoring vintage loudspeakers, occasionally you're going to have to replace capacitors in the crossover network of speakers you buy on eBay or Craigslist. The crossover network is responsible for routing the proper signal to the woofer, ...