25 Hz 25 hz 31.5 Hz 40 Hz -20 Db & -16 dB 1/3 Oct Band (Lch) 2 ... 25 Hz (20 sec) 25 Hz -14 dBFS 25 Hz -6 dB 25 Hz / one third octive warble tone at -20dB 25 Hz 3rd octave wide warble tone 25 Hz Sinus 0dB 25 Hz Test Tone 25 Hz Warble Tone 25 Hz, - 10 dB 25 Hz, -10 dB 25 Hz, -10dB 25 Hz, -12 dB 25 Hz, -20 dB 25 Hz, 31.5 Hz, 40 Hz (1*3 oct) * -20 dB * L * Off * L channel *