I guess I need to read the manual again. I thought the max was 2 TCE cabs, and you had to go to an RH750 if you wanted to use 3. Maybe best to burn the manual, so I won't be kicking myself for trying to get a guy to break up his 2 RS210s (at a complete steal of a deal) to go with my RS212.One thing to keep in mind is that the three-cabinet option is only recommended for their cabinets.
They had their drivers engineered to have impedance characteristics which allowed them to run as three "8 ohm" cabs at once, safely. Part of that comes from the custom drivers TC had Eminence make for them.
I do not recommend doing three cabs of another brand with the TC head. I know a few who tried it ended up with hair-trigger amp shutdown as the speakers fell too far outside the acceptable specifications to run as a set of three.
Besides, I can't really see a reason to use three large cabs with the amp. It's hellishly loud with two 4x10s or 2 1x12s.
