Yeah... Manufacturers specs are severely off sometimes. I remember measuring a TangBand w3-871 8ohm speaker which was specced at 15Wrms continuous. Had it playing a 1kHz tone to calibrate SPL, when I fed it about 2,9-3 volts the VC started to give off that nasty white smoke. 3*3/8 ~ 1,1W. This was like 30sec after I applied the signal. Just like T/S parameters, I treat those specs as BS most of the time. Some manufacturers like Scan Speak, Seas and a few others are pretty reliable though.
so, those Scandinavian companies pass muster, heh..
but that poor Taiwanese buildhouse can't make weight, hahaha...