Can anyone describe what type of steel is used for backing ring magnets in audio speakers? I understand it has special properties but am not sure exactly what these are or how they are obtained. What is the fabrication process? Can it be purchased in uncut sheets?
Barry Rogers
"Barry"
** It is ordinary mild steel.** Mild steel has the best properties for creating a strong magnetic field in a gap - provided it is fully saturated by the energising magnet.
..... Phil
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