Bose A20 Aviation Owner's guide - Page 38

Technical Information

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Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 TECHNICAL INFORMATION English Headphone Damage could occur to avionics equipment that is intended for use only with 600 Ohm headsets. If in doubt, consult the avionics equipment manufacturer. Impedance Monaural mode: 160 Ohms ON and OFF Stereo mode: 320 Ohms ON and OFF Frequency response 15 Hz to 15 kHz Sensitivity: 92 dB SPL typical, measured at 1 mw, 1 kHz, full volume on a KEMAR ear simulator. Microphone (Electret) 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. Microphone (Dynamic) Impedance: 5 Ohms Sensitivity: Equivalent to M-87/M-101 Maximum ambient noise level 115 dBC SPL for full active noise reduction performance Power source Battery-powered: 2 AA alkaline Aircraft-powered: 10 to 32 VDC Voltage Battery-powered: Two (2) AA alkaline batteries Aircraft-powered: 10 to 32 VDC Battery life 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. Current Operating: 25 mA in typical aircraft noise Fuse/breaker recommended /1 4 amp, fast-blow fuse (AGC /1 4 amp fuse) or /1 2 amp circuit breaker Headset weight 12 ounces Headset size range 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 Control module dimensions Temperature and Altitude (Category A) Bluetooth wireless technology Bluetooth technology QD ID 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 34

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34
Tab 3, 11
Tab 8, 16
Tab 7, 15
Tab 6, 14
Tab 5, 13
Tab 4, 12
English
Tab2, 10
T
ECHNICAL
I
NFORMATION
Headphone
Damage could occur to avionics equipment that is
intended for use only with 600 Ohm headsets. If in doubt,
consult the avionics equipment manufacturer.
Impedance
Monaural mode: 160 Ohms ON and OFF
Stereo mode: 320 Ohms ON and OFF
Frequency response
15 Hz to 15 kHz
Sensitivity: 92 dB SPL typical, measured at 1 mw,
1 kHz, full volume on a KEMAR ear simulator.
Microphone (Electret)
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.
Microphone (Dynamic)
Impedance: 5 Ohms
Sensitivity: Equivalent to M-87/M-101
Maximum ambient noise level
115 dBC SPL for full active noise reduction performance
Power source
Battery-powered: 2 AA alkaline
Aircraft-powered: 10 to 32 VDC
Voltage
Battery-powered: Two (2) AA alkaline batteries
Aircraft-powered: 10 to 32 VDC
Battery life
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.
Current
Operating: 25 mA in typical aircraft noise
Fuse/breaker recommended
1
/
4
amp, fast-blow fuse (AGC
1
/
4
amp fuse) or
1
/
2
amp
circuit breaker
Headset weight
12 ounces
Headset size range
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
Control module dimensions
1.5" (38.1mm) H x 1.5" (38.1mm) W x 4.92" (125mm) D
Temperature and Altitude
(Category A)
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
Bluetooth
wireless technology
Hands-free profile,
Bluetooth
2.1
Bluetooth
technology QD ID
Bose
®
A20™ Aviation Headset: B016487