Re: "Made for Mesa" eminence
I've been told that the MS-12 is basically a JBL 120 clone, with a sweet, focused midrange rated at 150 watts. The Vintage is a 50-watter with similar characteristics as the Celestion Vintage 30.
You will often find the MS-12 paired with a C-90 in some of the old half back cabs, and that is a nice combination...smooth with a touch of Celestion snarl to keep things interesting.
Bill