Questions about De'Longhi PAC EM77

Hm, the documentation is misleading ... in the spec it says "Sound power level at standard nominal conditions = 63DB, further down sound power level = 47-50DB". Probably the second value 47-50DB is meant as sound PRESSURE (acoustic effect), not POWER (technical origin, source)... Our measurements were already at 48~49DB for the Fan-1 without compressor, around 55DB for Fan-1/2/3 with compressor. Our unit was therefore returned, the product description is wrong with MAX-47DB. This is not even achieved by the Ulisse [which, by the way, states the same cooling capacity once for 40m2 and once for 130m2 - unfortunately, you really can't trust any information ¦=) ]