TEAC PE-505 Phonostage demagnetization function???
The new TEAC Phonostage PE-505 has a cartridge demagnetization function.
With the quick demagnetize function, both magnetized iron cores of MC cartridges and the step-up transformer are demagnetized by playing back a vinyl record for as short as 30 seconds with the DEMAG position."
I have a hard time figuring out what that is supposed to do.
- The permanent magnets in MM or MC design should certainly not be changed in magnetization. Newer designs also use neodymium magnets (e.g. Rega).
- Copper (or silver) wire cannot be magnetized, neither boron (or other cantilever material) and sapphire/diamond.
Am I missing something, or is this demagnetization function nothing but a pointless gimmick? Demag on tape machines for sure. Also on non-permanent magnets (e.g. electron microscope optics), absolutely. But on cartridges with permanent magnets?
And on SUTs, don't see it either as the signal is constantly changing and at very low power, so essentially playing anything through the SUT will constantly neutralize whatever has come before. On EM's it is different, because on stigmation coils the adjustment current is continuous, so over time, iron cores can become slightly permanently magnetized.
