80mm Rotational Speed (+/- 10%) 1800 RPM Rotational Speed with L.N.A. (+/- 10%) 1300 RPM Rotational Speed with U.L.N.A. (+/- 10%) 800 RPM SSO Acoustical Noise 17 dB(A) Acoustical Noise with L.N.A. 10 dB(A) Acoustical Noise with U.L.N.A. 7 dB(A)