Cardas Cold Forging

03-31-11: Lenny_zwik
Have you heard them? If not, then you've no basis to make a value judgement. If you have, then you're welcome to your opinion.
Lenny_zwik (System | Threads | Answers | This Thread)

Anyone is entitled to an opinion about something like this. Maybe it's time for them to start proving what their product can do, since they're making the claims. Amplifier, speaker builders not only go by sound, they also give measurements. When someone reviews their products, they also give their own measurements, and opinions. I'm just speaking about a technology that's over seventy years old to my knowledge. In the medical, aerospace and other types of industry, the company has to prove what their product can do. And we also still can give an opinion of proven products. I did not say it will sound bad.

anybody know the answer to this? When you forge metals you are actually causing material flow and microcrystaline changes such that the metal afterwords does have different mechanical properties. Forging generally is high pressures (way high) and usually heat. I thought crimping was a smashing of stuff together at low heat and much lower pressures. Thats the material show from the cheap seats. Question is if forged materials exhibit different electrical properties than the native materials did before forging? If they get enough pressures here I could see different material properties as a result but electrical properties are out of my league.

03-31-11: Paulsax
... Question is if forged materials exhibit different electrical properties than the native materials did before forging? If they get enough pressures here I could see different material properties as a result but electrical properties are out of my league.

IMO the differences in electrical properties are out of everyone's league, Paul, in the sense that any differences in electrical properties that may be claimed cannot be established in a QUANTITATIVE manner to be audibly significant, based on generally recognized electrical principles.

Keep in mind that differences in resistance, inductance, capacitance, skin effect, parasitic diode rectification effects, eddy currents, etc., will only have audible consequences if they are significant in relation to load impedance and to the current drawn by the load (or in the case of capacitance, in relation to possible effects on the amplifier).

All of which is not to say that differences don't exist that may be audibly significant while being unexplainable. But which is to say that there is grounds for skepticism, and for suspicion that reported differences may have been the result of either an unrecognized variable or mistaken perception.

Best regards,
-- Al

Al, well said. Hard to know what to do since I'm skeptical I could hear the difference, but that doesn't mean I wouldn't and to the better. Like I said before, I do wonder why this approach wasn't done long before, since the ability to do this has been available for years.

You can see here Cardas Two Stage Compression Die Forging that the process results in a metallurgical, homologous material with any gaps. These gaps can act as capacitors, two conductors separated by a dielectric, in this case air, which can cause changes in current flow and frequency response.