What the sensitivity measurement means is that at 1 metre, with 1 watt, at 1kHz, the speakers will produce xxx db output. Sometimes you'll see the spec listed as something like 96db (w/m), which is watt/metre. The typical industry test frequency used to weight this characteristic is 1 kHz, though subwoofers and other specialty drivers can be rated at different frequencies. You'd want to know what Fq they used to measure it in order to really know what you're dealing with. Also, the higher the number, the more efficient the speaker is. Hope that helps... ~M~