So? Your missing the point. The reason i run a small woofer in free air is because i dont want the neighbours, my landlord and the police kicking my door in for beeing too loud while i do a power output test, yes i know i can use a dummyload but a purely resistive load is not always a good substitute for an actual speaker, and yes i know a freeair woofer also doesent show the same impedance curve as it would in a box, but its still alot closer than a power resistor can ever dream of.