Bose A20 Aviation 2010-2015 Owner's guide - Page 36
Technical Information
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Technical Information Headphone Impedance Frequency response Microphone (Electret) Microphone (Dynamic) Maximum ambient noise level Power source Voltage Battery life Current Fuse/breaker recommended Headset weight Headset size range Control module dimensions Temperature and Altitude (Category A) Bluetooth wireless technology Bluetooth QD ID Damage could occur to avionics equipment that is intended for use only with 600 Ohm headsets. If in doubt, consult the avionics equipment manufacturer. Monaural mode: 160 Ohms ON and OF Stereo mode: 320 Ohms ON and OFF 15 Hz to 15 kHz Sensitivity: 92 dB SPL typical, measured at 1 mw, 1 kHz, full volume on a KEMAR ear simulator. Bias required: 8 to 16 VDC through 220 to 2200 Ohms. Sensitivity: Varies depending on bias and AC radio input impedance. Typical output is 600 mV at 114 dB SPL. To assure proper modulation of the radio, it is recommended that an avionics technician adjusts its input to match the output of the microphone. Impedance: 5 Ohm or 150 Ohm dynamic mic Sensitivity: Equivalent to M-87/M-101 115 dBC SPL for full active noise reduction performance Battery-powered: Two (2) AA alkaline Aircraft-powered: 10 to 32 VDC Battery-powered: Two (2) AA alkaline batteries Aircraft-powered: 10 to 32 VDC Alkaline battery life: At least 45 hours in typical general aviation aircraft noise. Duration varies with battery age, ambient noise levels, temperature, ear cushion seal, and use of the Bluetooth feature. Operating: 25 mA in typical aircraft noise 1/4 amp, fast-blow fuse (AGC 1/4 amp fuse) or 1/2 amp circuit breaker 12 ounces Slider not extended: 8.425" (214mm) H x 6.34" (161mm) W x 3.15" (80mm) D Slider extended: 10.2" (259mm) H x 6.6" (168mm) W x 3.15" (80mm) D 1.5" (38.1mm) H x 1.5" (38.1mm) W x 4.92" (125mm) D Operating: 5 to 131°F (-15 to 55°C) Storage: -67 to 158°F (-55 to 70°C) Altitude: 15,000 feet maximum pressure altitude for full cancellation Hands-free profile, Bluetooth 2.1 Bose® A20® Aviation Headset: B016487 36 - English