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What kind of capacitor is this?
Thanks,
Peter
Follow Ups:
I thought I had read that the white WonderCaps (with danor) were produced by IMB, but that might not be correct. In my experience with them, what mattered most was which series they were as noted by the label code suffix. the original ones (no suffix just a number like 7205) were dynamic but dry and forward sounding. OK if your tubes were overly colored and warm sounding. The later versions (with numbers like 7205A printed on them) were much more full bodied and are still an excellent capacitor for audio coupling. I found them generally a better choice than the common WIMA MKP10 or RelCaps or even the newer TRT InfiniCap polypropylenes I tried back when.
I can understand questioning the IAR reviews of components that had TRT capacitors in them, but it was up to the manufacturer to decide it was worth putting them into their products. With the hobbyist sales channel available for them, anyone else could install them too.
...was, AFAIK, the first audiophile to rate the quality of capacitors by name brand and type, this happening in the early '80s. Seeing an opportunity for profit, he published his results after coining the term 'WonderCap' and had Reliable Capacitor Co. so label a bunch of caps. Peter then retailed his own, 'world's-best-sounding' caps. Eventually he decided to change the formulation, appearance, and manufacturer, and the white WonderCaps were born. (The Rels were wrapped with yellow tape.) It is these white ones, I believe, for which he coined the term Danor, which, I believe, is just a name in that the white WCs were merely a different brand of metalyzed 'propylene cap. Moncrief has moved on since, creating several different versions of capacitors, with the current version being called TRT DynamiCap.
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Tin-eared audiofool, former fotografer, and terrible competitive-pistol shootist.
"Everything that can be counted does not necessarily count; everything that counts cannot necessarily be counted." Albert Einstein.
Edits: 09/22/11
...in the 1980s, it always bothered me that he gave positive reviews to products which used his caps, like ARC.
Seemed like a big conflict of interest.
Ironically, Moncrieff was the only audio journalist to criticize Peter Aczel for reviewing his own Fourier speakers in his own Audio Critic.
.
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Tin-eared audiofool, former fotografer, and terrible competitive-pistol shootist.
"Everything that can be counted does not necessarily count; everything that counts cannot necessarily be counted." Albert Einstein.
...are a line of audio capacitors manufactured by REL caps and marketed by J. Peter Moncrieff of International Audio Review (IAR) fame.
I could find no references to exactly what Danor is.
After Jung and Marsh wrote a groundbreaking article published in Audio Magazine in about 1981 claiming different capacitors have different sound qualities, Moncrieff developed his own line of caps, wire and solder, all called Wonder.
"claiming different capacitors have different sound qualities"
If you can't hear the difference, why are you interested in audio?
Perhaps you could clarify your statement, one way or the other.
the original article by Jung and Marsh...which help set in motion the movement to "made for audio" polypropolyne caps. Today, we tend to take it as a given that "different caps sound different" but that wasn't the case 30 years ago.
...aren't we.
> If you can't hear the difference, why are you interested in audio?
Perhaps you could clarify your statement, one way or the other.>
Maybe you don't know me and have never read any of my posts here so I'll cut you some slack.
In 1981 the idea that capacitors could have their own sound was groundbreaking, as I said.
Here we are 30 years later, in 2011, and audio equipment designers carefully listen to the sound of different brands and types of capacitors to chose which ones sound the best for the money in the different places they use them in their designs.
Happy now?
.
Thanks for clarifying that statement, I wasn't sure who was 'voicing' it.
As you probably know, Wonder Caps were some of the first "boutique"/made for audio metalized polypropylene capacitors. I remember that "Danor" was a feature they used in their marketing. I'm sure someone around here remembers what it was...I sure don't.
.
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Tin-eared audiofool, former fotografer, and terrible competitive-pistol shootist.
"Everything that can be counted does not necessarily count; everything that counts cannot necessarily be counted." Albert Einstein.
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