Hey Kyle, harking back to the Peavey Sheffield 1230/1230+.
So what are those Sheffield 1230's that are all over the place on the used market? AFAIR, Peavey even had them in some of their solid state Transtube combos, can't imagine, they're the "best" Peavey ever made...
Sometimes they have an Eminence-like 6-arm basket, some have a Celestion-like 4-arm, which maybe a hint, that there are quite a few versions of them out there. Maybe you have some first hand infos on them
Man, there are a bunch of different models of Sheffield out on the market, so it's tough to really nail anything down. There are lots of variations of the same model as well.
The 1200 is technically the 5150 speaker, which has gone through changes over the years, both in parts sourcing and design itself. It eventually morphed into the chrome basket 6505 speaker, which itself went through multiple variations.
The 5150/1200 Sheffield was born out of the original 1230, which was short lived in the old 412ms Butcher/Vtm cabs (NOT the metal grate front loaded later version of the 412ms) and was their take on a Greenback. I've actually never played one of these speakers in that cabinet, but have had them in both an ultra 112 and bandit 112 combo, and they actually sound quite good. They unfortunately had to use this design as the base of the 5150 speaker when Eddie came over, but changed out the cone to sound more like eddies old broken in celesto
ins in his favorite cab. I guess Hartley didnt want to keep both in production being that they needed the parts and production focused on the 5150 line since they sold like crazy.
The 1290 was Sheffield's take on the g12t75. I can definitely hear this. Scooped. big loose low end, VERY sharp top end. this is the speaker that generally gives Sheffield a bad rep along with some of the 5150 speakers because..... they don't sound that great imo. some people love them though. These came in the metal front loaded 412ms cabinets that were released with the ultra line.
The Jsx speaker was a 5150 speaker with a different cone. actually not bad sounding.
Finally, the triple xxx speaker. basically a 100 watt take on the Vintage 30. Stiffer, cleaner, and leaner. Ultra tight with virtually no break up. I actually love these speakers and think they're a diamond in the rough.
The 1230+ is a revival of the 12:30 that was discontinued, but with modern parts and some tweets to get it closer to how they originally wanted it to sound. definitely a higher powered greenback type vibe.