I looked those up and couldn't find a whole lot of information. I can't find a site in the United States. Only sites I could find them on are from Europe

. All I could find was that the RMS is 100W and the Sensitivity is 90dB. That sensitivity is lower than the others im looking at, so doesn't that mean they won't be as loud? I also didn't see their Impedence rating(Ohms).
My amp does 2-Channel mode, 4 ohms @ 70W x 2. Would that be enough to power these speakers that have an RMS Rating of 100W?