"Best" film cap you've never heard of? - Page 2 - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 17th December 2009, 02:22 AM   #11
diyAudio Member
 
benchtester's Avatar
 
Join Date: Apr 2007
Location: Oakland, Calif.
Quote:
Originally Posted by Kurt von Kubik View Post
I use polyphenylene sulfide (PPS) at work in mechanical application it is remarkable stable stuff. Also I have heard that it makes good good caps. Well worth a try.
  Reply With Quote
Old 17th December 2009, 02:32 AM   #12
diyAudio Member
 
Joachim Gerhard's Avatar
 
Join Date: Mar 2009
that is what i said. they are extremely stable with temperature and mechanically very inert. if that is important for good sound then you have a winner here.
  Reply With Quote
Old 17th December 2009, 05:25 AM   #13
diyAudio Member
 
analog_sa's Avatar
 
Join Date: Aug 2002
Location: Sofia
Quote:
Originally Posted by sandbasser View Post
I hear the Russian FT-3 Teflon Caps are excellent.


Bought a few together with the even cheaper K40 Y9. Didn't like them at all, even after stripping the aluminium skin. The K40s otoh are really nice, though certainly not comparable to the very best, if forced i can easily live with them. The FT3 disappointment really surprised me, everyone loves them to bits. And it is the general character of sound that upsets me, not some lack of refinement. As this experience put me off experimenting with more expensive teflons it may be just the teflon "sound" that's not for me.
  Reply With Quote
Old 17th December 2009, 07:43 AM   #14
diyAudio Member
 
Kurt von Kubik's Avatar
 
Join Date: Feb 2009
Location: Viby, Denmark
Send a message via MSN to Kurt von Kubik
@Joachim Gerhard & Benchtester!

What actually makes theese PPS caps superior I do not know precisely, it might be due to mechanical properties, because they don´t seem to be that different from PP in other regards.
I´ve used them for decoupling purposes amongst others in a DAC project, with discrete analog design.
First we used Wima PP types, then we ran out of them, and we tried to use some Evox PP caps, but with a bad result, I do not know why, but these Evox types did not sound nearly as good as the Wimas did. So we did have to replace them with Wima´s, but then suddenly the idea about the PPS came up, because my pals instructor at the technical university some years ago said, that they were a lot better than anything else available.
So we ordered some and just tried, and that I can tell you we did not regret.

When first one have heard them, then suddenly one realises that most caps are noisy devices, polluting the music with some strange sort of echo or resonant behavior which surrounds everything.
The PPS does not do so, they are much quieter and non resonant in their sonic behavior, when used for decoupling.
I must emphasize though, that some of the PPS caps in this particular case, were used for other puposes than decoupling. Namely as upper frequency limitation of the shunt regulators for the analog stage in the DAC.

Later on we´ve used them for decoupling purposes in a discrete buffer in a power amp, where they also excel. So i´ve no reservations recommending them, the downside of this is, that you will not anylonger understand how all those nicelooking red caps found their way into your expensive high end gear

I can only guess what the reason for theese differences are, but I think that impedance must be the main reason, or maybe the linearity of it.

Anyway! I hope they´ll find their way into good hifi gear, because Wima also do make them, so that the manufacturers of expensive gear can keep on using the nice red caps they love so much. The SMR´s are boring grey
At least they could replace the awfull Tantalums used by i.e. Linn in the very expensive DS Klimax.
__________________
Just do it
  Reply With Quote
Old 17th December 2009, 08:36 AM   #15
beetle is offline beetle  Germany
diyAudio Member
 
Join Date: Mar 2008
The best cap is no cap. Some time ago I was writing something about this here: SymAsym ohne Koppelkondensatoren « Beetle’s Weblog (Sorry, german only).

I had running my SymAsym with white Mundorf 10µF for DC coupling. My new linestage has no DC offset so I decided to get rid of the coupling Cs. What happened was somewhat stunning. Incredibily sonic improvement. I was totally out of my mind. I really wasn´t expecting that. Actually I was thinking my speakers are at their limits. And they are not.
  Reply With Quote
Old 17th December 2009, 09:06 AM   #16
diyAudio Member
 
Kurt von Kubik's Avatar
 
Join Date: Feb 2009
Location: Viby, Denmark
Send a message via MSN to Kurt von Kubik
Quote:
Originally Posted by beetle View Post
The best cap is no cap. Some time ago I was writing something about this here: SymAsym ohne Koppelkondensatoren « Beetle’s Weblog (Sorry, german only).

I had running my SymAsym with white Mundorf 10µF for DC coupling. My new linestage has no DC offset so I decided to get rid of the coupling Cs. What happened was somewhat stunning. Incredibily sonic improvement. I was totally out of my mind. I really wasn´t expecting that. Actually I was thinking my speakers are at their limits. And they are not.
I agree completely with you!
We´ve brought it even further, because of all caps electrolytics are the worst ones, regardless af brand and type. They sound very different, but they are all of them a source of colouration.
Therefor we did build our DAC with a discrete analog stage with very slow servo circuits instead of using filtering caps, but in addition, we also implemented shunt regulators for the analog stage, which need no decoupling at all. So there is no caps in the PSU at all.
Unfortunately this will not work for a digital stage, as the DAC chips, up-sampling chip and the reciever chip all together has a demand for very fast power delivery, which even the fastest shunt reg. will not be able to deliver. So unfortunately decoupling is needed, and in strategic well chosen places, you can use film caps in stead of ceramics. PPS is IMHO the ones with the least flaws.
__________________
Just do it

Last edited by Kurt von Kubik; 17th December 2009 at 09:09 AM.
  Reply With Quote
Old 17th December 2009, 03:32 PM   #17
Face is offline Face  United States
diyAudio Member
 
Face's Avatar
 
Join Date: May 2007
Best I've heard, Duelund CAST.

Best bang for the buck, Claritycap ESA.
__________________
"He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
  Reply With Quote
Old 18th December 2009, 06:59 AM   #18
diyAudio Member
 
Join Date: Sep 2003
T-cap from Tone Factory.
Do not know if they are available in the Western World, but according to Japanese ultra high-end audiophiles these are the real deal. The pic below is from the Robert Coda website. To get hold of these caps you would probably either have to eat raw fish or sleep with a geisha.
(Just found out that low value Vitamin-Qs from Tone Factory are available on eBay.)

Click the image to open in full size.
__________________
Thanx!
  Reply With Quote
Old 18th December 2009, 07:39 AM   #19
diyAudio Member
 
Kurt von Kubik's Avatar
 
Join Date: Feb 2009
Location: Viby, Denmark
Send a message via MSN to Kurt von Kubik
@ Face & Bequerel!

I figure that the ones you´ve mentioned are to be used for crossovers or tubegear.
__________________
Just do it
  Reply With Quote
Old 18th December 2009, 07:45 AM   #20
diyAudio Member
 
Join Date: Sep 2003
Quote:
Originally Posted by Kurt von Kubik View Post
@ Face & Bequerel!

I figure that the ones you´ve mentioned are to be used for crossovers or tubegear.
Yep, the Tone Factory caps have been specifically developed for tube gear as far as I know... and you would still have to sleep with a geisha.
__________________
Thanx!
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Anyone heard of "in-rush" limiter resistor andy2 Tubes / Valves 14 31st March 2006 02:39 AM
PRP - Precision "Metal Film" Resistors Gooch Parts 4 8th March 2006 09:30 PM
Anyone heard of "Blues" brand speakers from early 1990's? beady Multi-Way 2 4th August 2004 08:08 PM
"Power Tracking" in supply, ever heard, DIY ideas? Cradle22 Solid State 19 4th June 2003 09:02 AM
Brax "Graphic Pro" ever heard of em? is this a joke? lol SkinnyBoy The Lounge 0 28th March 2003 05:44 PM


New To Site? Need Help?

All times are GMT. The time now is 04:25 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2