Technical Information - Bose A20 Owner's Manual

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
36 - English
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
® ®