There isn't a data sheet. Normally good quality parts made by reputable brands have data sheets..... so people can verify what is stated with reality as well. Standard practice in our field with numbers one can calculate stuff with. This hobby has to do with numbers as electronics is a lot of mathematics to make stuff do what it is supposed to do. There is only one niche field where some design by just doing something and change parts randomly with day and night differences and sound stages blacker than black. Apparently these parts are for such customers.
So even if it might be the best caps in the world... there is almost no written data which means you have to measure yourself. The strange thing is that even the worst parts in the world often do have a data sheet 🙂
https://audience-av.com/wp-content/uploads/2016/09/Auricap_Applications.pdf
So even if it might be the best caps in the world... there is almost no written data which means you have to measure yourself. The strange thing is that even the worst parts in the world often do have a data sheet 🙂
https://audience-av.com/wp-content/uploads/2016/09/Auricap_Applications.pdf
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Or put more concisely snake-oil comes without a datasheet...
The closest I found to a datasheet was: https://hfc-fs.s3-eu-west-1.amazonaws.com/s3fs-public/auricap_specifications.pdf, which is better than nothing, but rather innumerate, speaking of megafarad values when they mean microfarad. Doh!
All part of the same story really, use hype pseudo-science to inflate the price, any bog-standard PP cap with a real datasheet will perform fine and cost a lot less...
By the way any mention of oxygen-free copper or cryogenic treatment is an immediate snake-oil sign - avoid.
The closest I found to a datasheet was: https://hfc-fs.s3-eu-west-1.amazonaws.com/s3fs-public/auricap_specifications.pdf, which is better than nothing, but rather innumerate, speaking of megafarad values when they mean microfarad. Doh!
All part of the same story really, use hype pseudo-science to inflate the price, any bog-standard PP cap with a real datasheet will perform fine and cost a lot less...
By the way any mention of oxygen-free copper or cryogenic treatment is an immediate snake-oil sign - avoid.
I've built a one-off test instrument that measures ESR and ESL (and C!) for capacitors greater than about 3 microfarads. I'd be happy to measure yours if you pay the round trip shipping costs. I'm in the San Francisco general area.
{why 3? because 3 is approximately the square root of 10 and these kinds of instruments typically involve circuit equations that include square roots}
{why 3? because 3 is approximately the square root of 10 and these kinds of instruments typically involve circuit equations that include square roots}
I’ve not made the purchases just yet - researching 🙂 (I was in San Fran last year for work)
Nichicon, Panasonic with a couple of Wima DC Link for the smps are in the BOM atm. Just thinking about the coupling caps atm - 0.2uF and 10uF.
Nichicon, Panasonic with a couple of Wima DC Link for the smps are in the BOM atm. Just thinking about the coupling caps atm - 0.2uF and 10uF.
I remember having seen a survey of boutique capacitors, I think on this site (quantitative measurements, not listening tests mind you!).
Member C Hoffman has some, but I am certain there were other studies:
Measured Differences Between Capacitors for Audio Applications
Member C Hoffman has some, but I am certain there were other studies:
Measured Differences Between Capacitors for Audio Applications
Does it really matter that much ???? I can only say that they sound very good for my XO application over Clarity Cap.
Where are you using these where the ESR of a film cap is going to be a limiting factor? It's going to be seriously low.
Most likely it doesn't matter at all.
Clarity caps have too many designs to make any blanket statements: from the really bad ESA to the really good MR.
I'm a bit late spotting this and surprised no one pointed this out to you, but ESR is not a fixed value, it varies with frequency and to a lesser degree temperature.
This is for a 6.8uF Sonicap Gen1 200Vdc I measured. (film cap)
Capacitance = 6.707uF
ESR (ohms)
120Hz = 0.7951
1kHz = 0.3496
10kHz = 0.3860
ERS also varies depending on cap types and is higher on Electrolytic's eg;
Mundorf 10uF E-Cap Plain 70Vdc (bipolar Electrolytic)
Capacitance = 10.46uF
ESR (ohms)
120Hz = 3.9710
1kHz = 0.8472
10kHz = 0.4766
Some types of electrolytic caps have even higher ESR levels.
I don't know if your question is related to recapping, but this is why, you have to be careful when recapping old x-overs on vintage speakers. If they used electrolytic's in the top end, say a high pass to a tweeter, you can probably substitute a film cap with little audible tonal change. But in a Mid/bass x-over, the significant difference in ESR between the two types can change the sound of your speakers. Adding a fixed resistor, to a film cap, as I have seen suggested in some threads, just doesn't work, as it doesn't change with frequency. So always change caps like for like.
Sorry the only Auricap XO I had handy, was a 0.22uF or I would have taken measurements for you.