Specifications
Page 36
... 22. The drives are to be taken in accordance with ISO 7779 at each octave band are to be less than the maximum value. Lwt(spec) = Lw = 0.1Pt + 0.3 < 4.0 (Bels) where Lw = A-weighted sound power level Pt = Value of desecrate tone penalty = dLt - 6.0(dBA) dLt = Tone-to-noise ratio taken in accordance...
... 22. The drives are to be taken in accordance with ISO 7779 at each octave band are to be less than the maximum value. Lwt(spec) = Lw = 0.1Pt + 0.3 < 4.0 (Bels) where Lw = A-weighted sound power level Pt = Value of desecrate tone penalty = dLt - 6.0(dBA) dLt = Tone-to-noise ratio taken in accordance...