Klipsch and Capacitors

Buy them  - they are fun.

I had a thrift shop pair maybe 20 years ago and they sounded good with my  Bottlehead 3 watt amps as well as an old NAD 20 watt receiver.

I didn't have low stands so I put small blocks under the fronts to angle them up (probably not ideal, but they sure filled the living room with sound).

DeKay

I probably will just for the investment but I don't think the KG line is going to increase in value like the Heritage...

At the very least, any electrolytics should be replaced.

Even unused, they age and will no longer meet tolerance. Not to mention, that electrolytic caps just don't sound good.  

But, as one who has upgraded more vintage, and not so vintage speakers over a couple of decades, I can state with near certainty, that caps do make a difference in sound quality. 

A friend and I used to have a part time, cottage business upgrading and fixing vintage speakers here in the L.A. area, and upgrading caps always made an improvement. 

This Ebay seller has a pretty decent recap kit available. Better than what came stock for sure. 

Recap Kit for Klipsch KG4 Speaker Crossovers 

But you could do better with even better caps, buying them on your own from 

Madisound

Oh!

Not sure who this slipped my mind, but this speaker company has prebuilt replacement crossovers, ready to go, in 3 different levels of improvement. 

But even the lowest level (Copper level) is better than the Ebay kit. 

Crites Klipsch Crossovers