The same can be done with small neodymium tablets/blades under the Alnico rods/blades. But why? Take a pair of bigger neodymium tablets/blades, magnetize Alnico rods/blades as strong as you like, and use Alnico alone.it's not the magnet type in terms of making the pickup magnetic, it has to do with the composition of alnico, which is an alloy with different electrical (and hence tone) characteristics than other iron based metal poles. the poles in c mag pu's are usually cheap pot metal. the alnico composition, and not their magnitization, is what gives strat and tele pu's their glassy, open tone you don't find in c mag units. the property is termed 'inductance', which is a poorly understood characteristic out in the general public where we tend to look at a pu's resistance to predict the pu's tone response. if you take non-magnitized alnico poles (which you can buy) and stick the right strength of c mag on them to make them magnetic, you get the same tonal effect as magnitized alnico poles.