Thanks for your responses - much appreciated but I still need more information. Especially on cartridge demagnetizers degaussers.
Yes, I read Mr. Carr's piece and that is what my questions were based on. So I need some additional insight.
Some facts:
Larryi - it is Van Den Hul and not Benz that states that demagnetizing is not needed and is bad. He states it as follows:
The physics behind the armature is quite interesting. (Correct: I have no life.) It's made of what vdH calls "practically Weisz-domain–free iron." He goes on to explain: "Ferromagnetic materials don't change their magnetic polarization per atom, but rather in aggregates or domains. When the size of these domains is decreased, each magnetic field change is responded to by the material's polarization in a higher number of smaller steps. This expresses itself in a reduced-modulation noise level. The modulator's square armature shape is also very helpful here. The result is a signal waveform practically free of steps. The much-reduced noise floor results in an enhanced sense of resolution and spaciousness. This noise floor is the sum of modulation noise plus surface noise. With the strongly reduced modulation noise, only the record-surface noise is left. The extremely-low-level groove information, therefore, is no longer masked, and that means the sense of spaciousness and resolution improves a lot."
Since I have seen no formal technical treatise on "Weisz domain-free iron" anywhere I view his claims as complete sophistry. However, if it is shown empirically that his cartridges do not benefit from any method of degaussing/demagnetizing then so be it. That may be a salient selling point for his products.
Marakanetz: Don't call me Dude....
please read up on this as demagnetizing an MC cartridge is somewhat of a misleading moniker. It is really degaussing the armature - if it is magnetic - obviously not the magnets themselves.
I still need someone to precisely explain how the sweep records actually work.
Yes, I read Mr. Carr's piece and that is what my questions were based on. So I need some additional insight.
Some facts:
Larryi - it is Van Den Hul and not Benz that states that demagnetizing is not needed and is bad. He states it as follows:
The physics behind the armature is quite interesting. (Correct: I have no life.) It's made of what vdH calls "practically Weisz-domain–free iron." He goes on to explain: "Ferromagnetic materials don't change their magnetic polarization per atom, but rather in aggregates or domains. When the size of these domains is decreased, each magnetic field change is responded to by the material's polarization in a higher number of smaller steps. This expresses itself in a reduced-modulation noise level. The modulator's square armature shape is also very helpful here. The result is a signal waveform practically free of steps. The much-reduced noise floor results in an enhanced sense of resolution and spaciousness. This noise floor is the sum of modulation noise plus surface noise. With the strongly reduced modulation noise, only the record-surface noise is left. The extremely-low-level groove information, therefore, is no longer masked, and that means the sense of spaciousness and resolution improves a lot."
Since I have seen no formal technical treatise on "Weisz domain-free iron" anywhere I view his claims as complete sophistry. However, if it is shown empirically that his cartridges do not benefit from any method of degaussing/demagnetizing then so be it. That may be a salient selling point for his products.
Marakanetz: Don't call me Dude....
please read up on this as demagnetizing an MC cartridge is somewhat of a misleading moniker. It is really degaussing the armature - if it is magnetic - obviously not the magnets themselves.
I still need someone to precisely explain how the sweep records actually work.