A few type r q's

[profundus-sanus 10+ year member]

Maybe you're right, but I don't see the magnet size listed on their site. I also thought that the coils for the 10's and 12's are 2in and the 15's are 2.5in?

its in the owners manual, and i do know there not the same size for a fact.

your probably right on the coil size, thats why i said iirc... because i wasn't sure, i just knew the 10/12 shared a coil size and the 15 was bigger.