Does anyone know if the SPL ("efficiency") listed by other speaker manufacturers is anechoic? If they aren't, then the Axioms as a brand are very efficient speakers. The other brands typically only give a single number while Axiom provides both. I was curious in comparing the specs among Axiom, Polk, KEF, etc.

AV equipment (in case you care)Panasonic TH-50PE700U,PS3 80GB,HK 445,Axiom M60,QS4,VP100,Hsu VTF2.3