Mundorf MKP Audiophiler or ClarityCap ESA ?

AudioCap Theta are the best crossover capacitors in the world.

@timlub Thetas have historically been described as dense, rich, and more laid back than other film/foil capacitors yet are very detailed. This matches my own experience. I’ve been using them for the past 20 years in various projects.

If they sound thin and bright in your system, it must be poor synergy. But I’m pretty sure it’s not the Theta’s fault. 

@timlub That guy’s opinions and that site is one giant pile of crap. I can’t believe you’re peddling it. 

@timlub Copper/silver/tin/film are always superior to any metallized capacitors. Maybe not always for aluminum/film. As terminating the leads or anything to aluminum is problematic. 

Even so, metallized capacitors are sprayed with conductive paint/glue on each end and leads are coiled and press fit. Ever take one apart? You can gently wiggle them out. It’s a terrible termination and one of the reasons why they will always be nosier than film/foil types. 

CSA caps are even worse. They spray the extended metallized aluminum ends with copper. Copper corodes aluminum. 

@beetlemania Go for it. But CSA won’t be much of an upgrade from the existing Solen/Axon caps.

MultiCap RTXs are amazing, but not for work crossover work. 

If you want a real upgrade, use film/foil, otherwise why bother? 

@beetlemania Thiel used CYC as bypass capacitors. They’re film. Was this ever questioned? 2.4s’ main capacitors are Solen or Axon branded (all made by SCR), and even several electrolytic capacitors. I recommend you leave this project alone.

@timlub Film/foil construction is always superior. If I had a choice, I’d use Teflon, but the price is ridiculous. Poly/tin Theta is a wonderful alternative, priced reasonably, and come in values up to 12uF. Styrene/tin is even better, but again prices and values are not suitable for crossover work. Rel-Cap is a good American company, which also supplies the military. They are at the top of the highest end capacitors in the world.