I would not say Duelund was not a big upgrade but the most cost effective is the tweeter cap because of the noise of the original foil caps. If his are the can type foil in oil? Every cap will change the sound but improvement? The woofer inductor change was bigger for the $ than mid range caps. Also internal wire to Duelund is big change but not cheap if Silver.
The next cheapest is to re-wire the woofer in Duelund copper if they still sell it. klipsch put a screw in the signal path!
The next cheapest is to re-wire the woofer in Duelund copper if they still sell it. klipsch put a screw in the signal path!