A:Answer All reputable speaker manufacturers rate the 'sensitivity' of their speakers by driving it with ONE WATT of white noise and then using a calibrated microphone/sound level meter, measure the sound pressure level (in dB) at a distance of 1 meter (about 3 feet). So the higher the dB level, the more efficiently the speaker converts electrical energy into sound energy. Most reputable speaker manufacturers products fall within the range of 80 dB to over 90 db of sound pressure level, at a distance of 1 meter when driven with only ONE WATT of power.
I would suggest researching your particular model of speakers and see how loud it plays with only the 1 watt of power used to conduct this Sound Pressure Level efficiency test method.
