Funniest snake oil theories

Status
Not open for further replies.
I actually have used a few Deulund graphite resistors. Cannot say what difference it made because the driver was not optimized at the time. I have used their cored inductors as well, interestingly the impedance phase was much like air cored inductors, the DC resistance was lower.
 

Attachments

  • The Flash.jpg
    The Flash.jpg
    8.2 KB · Views: 294
Wireworld Cable Technology Platinum Starlight 7 USB 2.0 | AudioStream

The Composilex 2 insulation absorbs three times as much noise as the previous model by minimizing triboelectric noise better than any conventional insulation material including DuPont Teflon.

Now almost anything has lower tribelectric noise than PTFE? So their point is? Then it goes downhill into real marketing Bull. And only £700/m! bargain.
 
A standard marketing ploy is to claim for your product a special feature which is actually more or less unavoidably present in all products of that nature. You can't quite claim it is a special feature, but you can say it in ways which imply that it is special. If challenged you simply say that the claim is true.

For example, you could sell a pencil by claiming that it can work upside down or even in zero gravity. Some people might pay extra for such a pencil, even if they intended always using it in the conventional manner.

I once saw a pension product which claimed an 'open market' feature (i.e. you don't have to buy your annuity from the same company). I later discovered that all pensions of that type had to have an open market feature, as UK law required it.
 
I found the Platinum Starlight USB cable excelled in the way it handled transients with outstanding definition and resolution, but lacked warmth or richness to the sound

Mr Plaskin obviously understand digital signal transmission, oh wait its Audio stream, why should I expect anything other than BS and sucking up to manufacturers, the blindingly ignorant leading the blind....
 
Now almost anything has lower tribelectric noise than PTFE?

Right, the claim misses some important technical points.

To clarify, I have no intention of denying the effects of triboelectric noise as it is IME both measurable and in severe cases audible, not to mention that there is a ton of good science behind it.

For example: Triboelectric Noise in Medical Cables and Wires | The Connector: By Molex

It is my understanding that the most severe triboelectric noise is dependent on care taken during manufacturing and not the raw material.

Logic says that any flexible dielectric with a DC voltage across it will be susceptible to triboelectric noise. The DC voltage can come from many sources. The reference points out internal rubbing of the components of a cable as a possible source.

So a cable that is tightly constructed and minimizes the relative motion of its constituents should perform exceptionally well in this regard.

Another source of a DC voltage is the insulation itself acting as an electret because there was an accidental charge on the wire while the insulation was hardening.

DC voltages on audio cables are rare, but a fairly large DC voltage is intentionally applied to cables that are used with phantom-powered microphones. If there are inconsistencies and asymmetries in how the insulation is deformed in actual use there can be noise related to normal use of mic cables in recording and live performances, and this is often observed in low quality cables.
 
Status
Not open for further replies.