dB is a relative measurement and MUST be accompanied by the reference to be of any real value.

However, most all software have the VUs listed in dB, referenced to the 0dB digital fullscale point. How that translates to actual Sound Pressure Levels (SPL) is another matter entirely.

I would think that you would want to look at SPLs here, A-Weighted. This may be given in a dB scale, referenced to something, either Watts, milliWatts, Volts, something like that. --And at a specified distance from the driver as well.


--Mac