BEST HARMLESS/SIGNATURELESS SPEAKERS CAPACITORS.

adding " niothing " to the audio signal other that makes its job, this is the big  difference and that's what means accurate in this regards application.

I don't use adjectives as smooth, warm, organic and the like to describe the Wima " sounds " because those audiophiles adjectives are not shared by Wima caps. Perhaps the only one is: neutral but not the neutral meaning in the " past " but a true NEUTRAL.

Wima is not an audiophile cap but a MUSIC lover caps, that's what Wima is.

Btw, I never imagine that my room/system had the today so high quality performance levels when in reality always that quality levels been there hidden through the added overall system developed colorations/distortions/noises.

Yes, it's a great discovery for me.

R.

Dear friends: With more time/hours listening my NEW systems with that WIMA caps in the crossover not only can confirm those two characteristics that only have the live MUSIC: POWER and CLEARLY ( not pristine but clearly. ).

Now I can say that through the WIMA caps that almost " don’t touch/degrade " the signal the MUSIC FLOW in a totally free way, just like live MUSIC, and not only that but the TEXTURE of each note/harmonics of instruments that you can " cut with a knife " ( positevely. ). You can " touch " those notes/harmonics ( textually. ).

Other characteristic is its full COHERENCE and INTEGRATION of all instruments in what you are listen it.

Tjhe experience is so REAL that you have to live it to understand all those characteristics. Just FANTASTIC  ! ! believe me.

I know that those adjectives is not the first time you read it but its meaning through the WIMA caps is not different but leaves to you to other order of magnitude. Yes those WIMA are my long audio life discovery of discoveries.

So to the ones of you that wants or are looking not for a different but for a true better quality performance levels I invite you to test the WIMA caps at your tweeter and mid range speakers crossover.

Boutique caps are almost a " joke " against the humble and inexpensive WIMA.

Good luck I have to return to follow enjoying MUSIC as never before.

R.

I forgot, I will report on WIMA woofer crossover caps when I put my hand on it because due that I need 100uf is not easy task to find out as with the tweeters/mid range caps.

Glad you like them.  I would not paint with the broad brush you use saying all boutique caps are a joke.  I tried Wima and they are nothing special to me.  Certainly no Vcap Odam or Miflex copper foil! 
This is all subjective based on your ears, preferences and particular room and piece of gear the caps are installed in.  
Great when you find something that works for you. 

Over at the Humble Capacitor review site they liked it fine giving it a rating of 8 which is pretty average. Not poor, not great like many “boutiques”.  That jives with my experience with these in both crossovers and electronics.  They are pretty average.  The quote from the Humble site.....

WIMA MKP 10 100VDC - 10% tolerance

Technical specifications (according to manufacturer): "Pulse capacitor. The construction principle of the series WIMA MKP 10 consists of a non-metallized dielectric film and an carrier film metallized on both sides acting as electrode. Thanks to the metallization on both sides, the electrical conductivity is considerably improved and the contact surface between the electrodes and the schoopage layer is doubled. This results in better contact and allows for high current and pulse loading capability. The properties of metallized capacitors such as excellent self-healing and high volume capacitance remain unchanged."

Sound: With the WIMA MKP 10 you get a neutral, smooth and well balanced capacitor. For this price range the amount of transparency is quite reasonable and overall the MKP 10 is pleasant to listen to. Compared to the similar shaped and sized Mundorf RXF the presentation is more forward and a fraction less clear. But never the less it has good overall sound qualities. Don't forget to give it some time to burn-in. Fresh out of the box they sound restricted and dynamics are limited. After several weeks of use they should open-up.

Verdict: 8

You may want to try the new Vcap Odam as they are more neutral than the PIOs you don’t seem to like. They are much more 3D dimensional than the Wima cap and not very big physically.

It sounds like the better caps are revealing some negative sound attributes unique to your system and ears while the Wima caps are masking it.   This would make sense as the Wima caps are not top class in resolution or refinement. That is why I say this can be very subjective based on your system’s sound including It’s relative sonic strengths and weaknesses.