So, spurred by the experience of
@golfski above with his 1936 cab, I ordered two F12-x200 and they arrived yesterday. I have three amps in contention, the power section of the Genz Benz Streamliner 900, the power section of the Boss TAE, and the natural channel of the Orange Rocker 30 (a unique, limited gain flat response channel that is blistering loud when clean).
I pulled out the V-types (you know - the V30 for folk who dont like the V30) from my $299 slash sale PRS 212OB cab here
prs 212ob cab and stuck the f12-x200 in.. Being open back there was no real issues with any calculations.. and for power i ran into the fx return of the 100W power section of the Boss TAE swiss army knife.. cos yes it does almost everything.
initially i was like wtf.. mud & fizz ..so futzed about some and couldn't eq out in the ax8 ..so at this point i was well, you know, its going so well you are starting to sweat?..lol
Finally I figured i should d/l the TAE editor and yes, in system settings i had added fletcher munson compensation.. as given its use is primarily as a load box/attenuator/re-amper and ultimately figured oops - logically with no actual input the box would have set compensation to max.. switched off and moved on. phew..
The i played my phone into ax8 input 2 and straight to outputs 1 and listened to music some and tbh it sounded pretty darn good so guitar and presets went back in.
one hour later.. So far so good. a slight 3dB cut at 60hz in global eq ..but cab is 2ft from a rear wall and a cut at 16kHz.. overall much more realistic for guitar than studio monitors or the Line 6 L2T PA speaker I have been using.. not as good as a tube amp and cab, but i can use "different cabs"
The next couple of weeks may bring something up but for now I am just going to enjoy it.. $360 well spent.