There's alot of calculating to do this. But has anyone shot pink noise and referenced the SPL through the meters on a channel? I am messing with my control rooms eqs and am going to use an analyzer. I'm about to calibrate the RTA mic at 94db. What would that value be in a "dbm" metering? If that's correct terms. If I went straight to the ad convertors I guess it would show but the mic needs the pre and +48.