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Question on TC RH750 head running 3 cabs

Do the research on their pages....they suggest a few different configurations and they show you WHY you may want to mix up 2x10's and 2x12s. Im setting up with a 2x10 and a 2x12....I don't need much more than that on stage as bigger venues push through FOH systems anyway.
 
Hey guys, I'm thinking of getting a TC Electronic RH750 head and getting 3 RS cabs (4x10, 2x10, and 2x12). I want the versatility as the size of gigs range drastically. I want to be able to run to a basement practice and use just the 2x10's and be able to hook up all three if I'm playing at a conference type setting.

My question is, if I'm running all 3 cabs with the RH750 head, and lets say its a bigger type show where I need lots of volume, will the same amount of power going to my 4x10's go into my 2x10's? Will this set up potentially fatigue or damage my 2x10's? I'm not a very technical guy so before I take the plunge on this set up I want to make sure I won't be damaging the 2x10's

Thanks!
Question
Can i connect 3 bass cabinets to a Blacksmith, the same as with the RH450 or RH750. For example a RS410 + RS210 + RS212 connected to one blacksmith output of 4 ohms?

Answer
No, the Blacksmith is not like the RH450 and RH750, which have a minimum load of 2.66 Ohm, whereas the Blacksmith has 2 Ohm.

But the rule is simple : if the load is below 4 Ohm, you must set the switch to 2 Ohm. Then you can connect 3 cabs to only one output if it is more easy for you or you can use both - they are in parallel.
 
This seems to work quite nicely!!
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