A question for Magico S1 Mk2 owners

Though rated sensitivity is 86db I saw a lab test indicating 82 db which is quite low. 82db is going to need a lot of juice to get them moving. Owners; what is your experience? 
The rating is misleading. My S1 MKII play fine with 100wpc. Since its only a 7" woofer, too much power will make the woofers hit the backstops with bass heavy music at loud volumes.