Thanks for the clarifications!

The box is sealed, as I tend to prefer my bass a bit tighter. Dakkon, what's the point of the capacitor?

Anyway, let's say I like to listen to bass-heavy music at around 90 decibels or so. In my example above is there any practical difference between driving the sub @ 8 ohms with the amp providing 200 watts vs driving the same sub @ 2 ohms with the amp producing 500 watts? I've tried it both ways and the amp can handle this load under either configuration (and it doesn't seem to overheat). Is the whole thing a wash, or is there a compelling reason to set it up one way or the other?
Music is the best -- FZ