I am using a pair of JBL 4343's. Recently I have replaced some of the caps in crossover used for the 2420 driver and the 2405 slot tweeter with Jensen oil in paper caps. The results were very encouraging, and now I would like to make further improvements.

In the crossover there is a 52 uF capacitor that the entire signal for the MF, HF and UHF drivers apparently has to pass. Is there any way of getting rid of this capacitor or any other ways of simplifying/improving this crossover?

I can't biamp, and I am not quite ready for a 1st order filter like the one made by 4343mod (At least not without having seen some measurements).

I am not an expert in crossovers and any help will be greatly appreciated.

Crossover schematic