Quote Originally Posted by montesquieu View Post
Whatever the mechanics (and the above is a useful observation which would suggest that where the coils are rotated as in the Soundsmith approach, then only one coil is used for output) it's pretty clear that when Ortofon write True Mono in caps and have a special page for all their cartridges, they are obviously NOT talking about simple strapping of a stereo cartridge. Likewise Koetsu who do the same (and who like Ortofon don't have a Miyajima/vintage-like approach with single generator and horizontal only motion), and Lyra who have two mono coils (their approach is documented, Jonathan Carr has several write-ups out there). And Audio Technica whose AT33 monos are true mono as well (I've also owned these in both LP and SP form).

Or do you claim to know more than the engineers behind these illustrious companies? Are they all putting lies out there?
What is your problem? It is very simply a question of definition -HOW do we define a true mono design and WHAT is a true mono cartridge in 2017 ? When we have got a definition for something then we can evaluate everything and anything by this definition. That's all. And the opening question for discussion in this thread was if a SPU Mono -not Koetsu, Lyra, Miyajima, Soundsmith- is a true mono cartridge or not...? You can't answer it and Ortofon doesn't address this issue either. So why bother...?