@wolfie62 : a mono pole magnet does not exist! If you could invent one you could qualify for the Nobel Prize for Physics!
LOL!!!
Really? You are EXACTLY the type of person I was referring to! You don’t comprehend how MC/MI/MM cartridges work!
When you induce magnetic flux into a non-magnetic soft iron (Mumetal or other brands), you induce from only 1 permanent magnet pole. The entire armature takes on that one pole’s N or S polarity. It would be physically impossible to have both poles of magnetic flux. The armature is then an *extension* of the one magnetic pole. The armature in the coil pole gap has only 1 pole’s magnetic flux. A true MONOPOLE of magnetic flux!
And BTW, a small, powerful rare earth magnet on a cantilever also has 2 magnetic poles in very close proximity to each other, and to the coil poles. Doesn’t happen in an MI armature!