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Old 25th May 2009, 04:46 PM   #1
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Talking Capacitor Comparison Conundrum

I have been buying dribs and drabs of various poly/film caps in order to do comparisons and am at a bit of an impasse. Among those I have tried are RIFA, Ero, Sprague 716, Mallory 150, and some blue ones whose brand name eludes me at this moment. To be quite honest, I don't hear much if any difference tonally...noise level is the only major distinction I can see (hear?). Is it the medium I am using...I am a guitarist so guitar amps are my main area of interest. Maybe "higher quality" caps with 5% and 10% tolerances are lost on the guitar's comparatively narrow frequency response range. Not a total loss though...it's a lot of fun ....
As always...thanks for coddling this toob-noob....
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Old 27th May 2009, 01:45 AM   #2
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Default Re: Capacitor Comparison Conundrum

Quote:
Originally posted by bereanbill
To be quite honest, I don't hear much if any difference tonally...
My very good friend,

Glad that your hearing is still normal! There have been quite a few articles on this either way, but notably a very well researched series of tests on all kinds of capacitors, by Cyril Bateman in 'Electronics World' August 2002 - about Dec. 2002.

I am constantly reminded of these very wise words by a Scottish expert on oils, when as a young engineer I asked a rather academic question: "Laddie, ya shouldna listen to all the old wives' tales ya hear." (Apologies for implied Scottish accent, which I just love!)

In audio, for normal coupling/bypass/filter duty one can do no better than polyester/polycarbonate items made by any renowned firm. Forget about boutique (exotic) types - unless you mount them up there, sufficiently lit for all to see the brand!
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Old 27th May 2009, 01:56 AM   #3
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Default To Johan

Thanks for the reaffirmation...after 35+ years of music and 27 years of construction noise, sometimes I wonder about my hearing. It seems like a lot of people build their opinion on that of "experts"...my friend Matt calls it "Massaging each other's pre-suppositions" (he gave me permission to use that BTW)
I must say that , in a recent SE build (mutated Fender Champ) I used some of those blue caps I mentioned in the early stages. I later changed them out for Mallory 150s and it seemed like the amp began to breath so to speak.
Thanks again...how about someone else chiming in ???
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Old 27th May 2009, 02:02 AM   #4
SY is offline SY  United States
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Quote:
Massaging each other's pre-suppositions
Excellent turn of phrase. I will no doubt steal it.

There's just as much sociology (maybe more) as technology in high end audio. I've run across differences in coupling caps, but only when there was a pathology (e.g., a microphonic capacitor because of poor winding technique).
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Old 27th May 2009, 02:05 AM   #5
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Hypnosis is rather a practical psychology than a sociology.
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Old 27th May 2009, 02:07 AM   #6
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massaging each other's pre-suppositions...it was originally used in a theological context, but it works in countless situations !!!

BTW: How do you do that quote thing??
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Old 27th May 2009, 02:28 AM   #7
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Quote:
Originally posted by bereanbill
massaging each other's pre-suppositions...


Quote:
Originally posted by Wavebourn
Hypnosis is rather a practical psychology than a sociology.


Gee - now I can go to bed with a smile on my face!!!
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Old 27th May 2009, 02:53 AM   #8
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Quote:
BTW: How do you do that quote thing?? [/B]
By clicking the "Quote" tickbox on hte right hand bottom corner of the post you are quoting...
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Old 27th May 2009, 03:44 PM   #9
m6tt is offline m6tt  United States
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Find two random people, keep them isolated.

Take a product, say a candybar. Remove label, etc. Tell person A that it cost you $500 and was designed in a CAD program for astronauts. French chefs and Swiss candymakers worked together to maximize the flavor.

Tell person B you found it under the couch, or in the candy machine down the hall.

I'd bet at least $1.75 that person A likes it better
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Old 27th May 2009, 05:10 PM   #10
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Default From capacitors to candybars

Hey..I think I've had candybar A...not only did it taste better, but it was extremely transparent and had a great sounstage too !!!GREAT analogy..another example of "massaging each other's pre-suppositions, eh?"
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