• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required as is 20 years of participation in forums (not all true). Come here to have fun, be ready to be teased and not take online life too seriously. We now measure and review equipment for free! Click here for details.

Cyril Bateman's Capacitor Sound Articles

DonH56

Technical Expert
Technical Expert
Patreon Donor
Joined
Mar 15, 2016
Messages
3,402
Likes
4,491
Location
Monument, CO
#3
Both classic articles from classic legends in the industry, thanks for finding and sharing!

Replacing the input cap on Hafler amps was one of my standard mods.
 

restorer-john

Major Contributor
Joined
Mar 1, 2018
Messages
3,078
Likes
5,514
Location
Gold Coast, Queensland, Australia
#4
Yes, thanks for posting. I've read and seen the articles before, but it's nice to read them again.

Sad to see Cyril has died. R.I.P.
 

tomelex

Addicted to Fun and Learning
Patreon Donor
Joined
Feb 29, 2016
Messages
759
Likes
282
Location
So called Midwest, USA
#6
look at figure 8, and use your view button to increase the graph sizes, look at the one on the right, several of the worse caps in an amp channel could increase the thd+n enough to be audible with the right ears and music or test tones, and system I would think.

http://www.rubycon.co.jp/en/products/pmlcap/technote.html
 

Wombat

Major Contributor
Joined
Nov 5, 2017
Messages
4,548
Likes
2,923
Location
Australia
#7
The capacitor in isolation. That level of distortion at LF is not such a problem.

A capable designer can work around it or choose a different capacitor, if necessary. :)
 

tomelex

Addicted to Fun and Learning
Patreon Donor
Joined
Feb 29, 2016
Messages
759
Likes
282
Location
So called Midwest, USA
#8
The capacitor in isolation. That level of distortion at LF is not such a problem.

A capable designer can work around it or choose a different capacitor, if necessary. :)

Those LF distortions add up into the lower midrange and that's where they make their audible presence known. :)
 

Wombat

Major Contributor
Joined
Nov 5, 2017
Messages
4,548
Likes
2,923
Location
Australia
#10
Experienced enough to steal my oscillator verbatim with no attribution. I could not have cared less BTW, I put all my audio stuff into the public domain.
Before or after?
 

scott wurcer

Senior Member
Audio Luminary
Technical Expert
Joined
Apr 24, 2019
Messages
488
Likes
846
#11
Before or after?
Not sure what you mean, I have always done that from the beginning. In any case either you file a patent if you want to pursue financial gain from an idea or publishing it relinquishes all rights to the IP. In this case a simple thank you would have been enough, really.
 

Speedskater

Senior Member
Joined
Mar 5, 2016
Messages
349
Likes
196
Location
Cleveland, Ohio USA
#12
Remember that coupling capacitors and those used in EQ & crossover networks are different ball games. There is almost no AC voltage across a coupling cap, but at some frequencies there can be lots of voltage across a EQ cap.
 
Top Bottom