Bus, train, taxi
Houses of worship
Lectern
Reception desk, restaurant
Ticket window, bank counter
C 400 BL
Unidirectional boundary layer microphone with frequency response tailored to the speech range (low frequency roll off of 6 dB/octave below 300 Hz; high frequency roll off above 7 kHz of 12 dB/octave, with a rise of 4 dB in the 6 kHz range). Microphone sensitivity shall be no less than 13.5 mV/Pa (–37 dBV), and the microphone’s dynamic range shall be no less than 62 dB. Cable length: 2 m (7 ft.). Total harmonic distortion (THD) shall be no greater than 1 % at an acoustical operating level of 115 dB. Size: 1.7 x 0.9 x 0.6 in. (43 x 24 x 15 mm), color: non-reflective black. Net/shipping weight: 5.5/160 g (0.2/5.7 oz.).
