2 of these are now in 20 liter sealed, mid range enclosures. I use both connected in parallel (4 ohm), driven by a Crown 500x500 watt slave amp. The other 1/2 of the crown drives bass bins.
The 2 "12-280's" certainly deliver the goods with no problems @ all, although not as bright sounding as the 2 Fane, 200 Watts each, predecessor's, I simply "up" my horns to counteract.
These 12-280's certainly give me confidence when pushing the sound limits & the great price of them, takes some beating.
I recommend using line level, active crossovers for complete control of your sound.
Thomann give us all this superb sound gear on our smart phones to browse & test. :-)