Yes cartridges vary as to the wiring set up on them. Usually a manufacturer thing.
I rebuilt my system today. Installed a recapped preamp that needed an aux switch box to handle more high level inputs. Sounds as good as it can with the speakers. Don't know how long I will keep this set hooked up.
Glad to read that your turntable is getting hooked up to the spec 1. Let us know how you like listening to records, not how much more work it is to deal with the limited play time of 15-23 min per side. I have a friend that plays 78s, 3 min per side. Time to use a record changer for that I would think.