Capacitors for HP filters in tube amps recommendations?


I’ll soon be installing a capacitor on each of the input jacks of two tube power amps, to create passive 1st-order high-pass filters. Cap values are 19.9uF (20uF will do) and 30.33uF (let’s say 30uF). I’ll need two of the former and four of the latter (balanced/XLR input jacks), and I don’t want to spend more on the caps than the amps cost me ;-) .

I’m all ears for nominees. I don’t need or want any flavoring, "just" neutral transparency. The amps are powering fairly transparent loudspeakers (ESL’s, and Magnetic-Planars with Ribbon tweeters), which will pretty well reveal the character of the caps. In spite of that fact, "most-bang-for-the-buck" nominees are of particular interest, not cost-no-object ones. Thanks y’all.

128x128bdp24

Showing 2 responses by rauliruegas

Dear @oldhvymec : Wima comews not only in your electronics mentioned or in my Levinson monobloks but comes too in very expensive/cost no object high end electronics:

https://dartzeel.com/en/

https://s3-eu-central-1.amazonaws.com/dartzeel/wp-content/uploads/2017/12/30104100/nhb-108-model-2-upper-front-735x470.png

http://www.theaudiobeat.com/visits/ch_precision_upgrade_addition.htm

or in this 250K+ amplifier:

https://www.dandagostino.com/products/relentless-monoblock.php

http://cdn.dandagostino.com/images/products/relentless_monoblock_3.jpg


Passive high-end/boutique parts as caps are only the snake oil we " high end " audiophiles are looking for. All of them are full of " nice " colorations when Wima humble ones are true signatureless and harmless caps to truly honor MUSIC.

Differences between high-end audiophiles and real MUSIC's lovers are like the differences between Duelund and Wima caps where obviously Wima is for the music's lovers.

Over 40+ year in audio I just learned what I said in that last statement and I did it through first hand experiences.


R.
Dear @bdp24  : I know that now maybe is to late but I will post anyway because I just made a huge caps discovery.

"  If they’re good enough for Nelson..."""

My discovery was exactly WIMA caps that not only for N.Pass but for electronics in all the world WIMA is the true standard in the industry and for very good reasons I never experienced before till I tested and learned why is the industry standard.

I was using at the input of my Levinson monoblocks the V-caps teflon Cu for the same application that you are doing.
Well I just changed that truly expensive V-cap ( top of the line. ) for the humble Wima FKP 1 and Wima outperformed very easy.

Before that electronic cap change I changed all the boutique expensive and heavy colored caps ( Duelund, Mundorf, V-caps, Jantzen, Sonicraft, that I own it. ) in my 3-way crossover speakers. I use here the Wima MKP 10 model and happened the same: Wima outperformed all those " high-end "  caps.

Nothing compares against Wima, no matter what.

I came to this specific forum looking for an advice for a harmless/signatureless caps for my speakers and posted a thread about.

I posted the thread with out any agenda but looking for help and through that thread and with out any Wima recomendatiopn I pull the triger for it.
You can read that thread and know how and why I decided for Wima.

Btw, the FKP 1 and according the Wima site is the top cap for our applications and you can find out therough Mouser that is where I bougth all my Wima caps and I don't care to much of the Wima tolerance because it measured really near the capacitance values even if the tolerance is 10% or 20%.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.