[quote name='stevie' post='1178990' date='Mar 27 2011, 11:36 PM']I see what you mean. They might have an inductor on the bass drivers that would raise the impedance a bit above nominal, but it wouldn't raise it by a couple of ohms.
Not a bad idea, although I've already made the purchase.[/quote]
I would imagine that they're suggesting that TC cabs that are rated at 8 ohms are actually measuring 8 or above, and that other manufacturers may be below.
It makes sense that they are covering themselves with a sort of margin for error with regards to other cabs.