With all due respect, I think you are over thinking this and this isn't the place to learn basic electronic theory. L200s are a little lacking in the highs. The horn rolls off on its own, that's why you are adding the 077 in the first place. The capacitor is wired I series with the 077, it really doesn't get any simpler. You can drill a new hole on the baffle or simply put the
077/2405 on top of the cabinet. It will make a nice improvement of your ears work up there. Have a great holiday and enjoy the music!