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TIMTAPE · 14th Nov 2019, 8:31 pm

Good point about wear. The pole pieces look like ferrite, a very hard material. Ideally the material in between tracks 1 and 3 is the same hardness. This may also explain the "too wide" pole pieces. They're not pole pieces. Just preventing uneven wear. But it still looks different from other ferrite head setups.

14th Nov 2019, 8:31 pm	#15
TIMTAPE Octode Join Date: Jul 2006 Location: Perth, Western Australia Posts: 1,969	Re: Philips N4520 alignment problems Good point about wear. The pole pieces look like ferrite, a very hard material. Ideally the material in between tracks 1 and 3 is the same hardness. This may also explain the "too wide" pole pieces. They're not pole pieces. Just preventing uneven wear. But it still looks different from other ferrite head setups.