Audiophoolery in Panasonic Electrolytic Capacitor Application Notes

[Ben Bradley]

(crossposted to sci.electronics.design and rec.audio.pro)

I was looking through electrolytic capacitors for yet another
bloated-capacitor replacement for PC SMPS repair when I decided to
take a gander at the manufacturer's data (looking for the longest
rated life at the highest temperature so with luck the new ones will
last a few years), as pointed out by Digikey:

http://industrial.panasonic.com/www-cgi/jvcr13pz.cgi?E+PZ+3+ABA0022+EEUFC1A222L+7+WW

I saw some interesting-looking titles in the lower-right under
"Aluminum Electrolytic Capacitor Data Files", specifically the
"TECHNICAL GUIDE." Clicking that goes to another webpage with PDF
links:

http://industrial.panasonic.com/www-ctlg/tech/tABA0000_WW.html

Most notable is Section 7, in the file at tle link below. It all looks
reasonable and objective until it gets to Section 7.2 on audio, which
starts on the third page of the PDF file.

(here's the payload, folks):

http://industrial.panasonic.com/www-data/pdf/ABA0000/ABA0000TE7.pdf

There are only two pages on audio, but it has the highest density of
undefined/undefinable words I've ever seen in a "real" technical
document. I've never heard of "amount of deta" but I'll guess that
deta is short for detail.

 

[Eeyore]

Organic caps will sound better on folk music.

And Georgian Chants.

Graham

 

[Ray Thomas]

And Georgian Chants.

Graham

only if they are free range caps tho'.... and not grain fed

 

[Paul Stamler]

only if they are free range caps tho'.... and not grain fed

They're not as useful as organic transistors.

You can buy them at Hole Foods.

Peace,
Paul

 

[Eeyore]

(crossposted to sci.electronics.design and rec.audio.pro)

I was looking through electrolytic capacitors for yet another
bloated-capacitor replacement for PC SMPS repair when I decided to
take a gander at the manufacturer's data (looking for the longest
rated life at the highest temperature so with luck the new ones will
last a few years), as pointed out by Digikey:

http://industrial.panasonic.com/www-cgi/jvcr13pz.cgi?E+PZ+3+ABA0022+EEUFC1A222L+7+WW

I saw some interesting-looking titles in the lower-right under
"Aluminum Electrolytic Capacitor Data Files", specifically the
"TECHNICAL GUIDE." Clicking that goes to another webpage with PDF
links:

http://industrial.panasonic.com/www-ctlg/tech/tABA0000_WW.html

Most notable is Section 7, in the file at tle link below. It all looks
reasonable and objective until it gets to Section 7.2 on audio, which
starts on the third page of the PDF file.

(here's the payload, folks):

http://industrial.panasonic.com/www-data/pdf/ABA0000/ABA0000TE7.pdf

There are only two pages on audio, but it has the highest density of
undefined/undefinable words I've ever seen in a "real" technical
document. I've never heard of "amount of deta" but I'll guess that
deta is short for detail.

Total crap, appealing to the dumbness of today's users and designers.

There ARE some aspects of construction that will affect electrolytic cap performance,
notably microphonics ( got hit badly once by purchasing's decisions once on that aspect
) but this smells of nothing but marketing bullshit.

Graham

 

[Eeyore]

I would look at the new organic electrolytics. These are now showing up in a
wide variety of applications, and are claimed to have something like 10% the
life of a conventional electrolytic, even under extreme conditions.

I think you mean 1000%.

Probably a post from the fake 'soundhaspriority'. Did you lose your account with
Buzzard, diddums ?

Graham

 

[Eeyore]

Organic caps will sound better on folk music.

LMAO ! And 'real ale' will enhance the effect even more. ;~)

Graham

 

[Boris Mohar]

LMAO ! And 'real ale' will enhance the effect even more. ;~)

Graham

At the expense of greater leakage.

 

[Ben Bradley]

Thanks a bunch for the post. It inspired me to dedicate a complete
section of wall in my cubical to the insaneness of the audiofool. The
other engineers here will get a big kick out of it. Any other links
would be appreciated.

There's this product, I think it's been out a few years now:

http://www.usa.denon.com/productdetails/3429.asp

Reviews here:

http://www.amazon.com/Denon-AKDL1-Dedicated-Link-Cable/dp/B000I1X6PM