Bose II manual Technical Information

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Technical Information

Sound pressure levels (SPL) are relative to 20 micro Pascal.

Earphones

Damage could occur to avionics equipment if it was manufactured for use only with 600(ohm) headsets. If in doubt, consult the avionics equipment manufacturer.

Impedance

In mono mode: 480(on) and 190(off) at 1kHz.

In stereo mode: left, 500(on), 190(off); right, 2000(on), 190(off).

Frequency response

20Hz - 15kHz

Sensitivity

90dB SPL measured at 1mW, 1kHz, full volume on flat plate coupler

Microphone

Bias Required:

8 to 16VDC through 220to 2200

Sensitivity:

Depends upon bias and radio AC input impedance. Typical output is 300mV at 114dB SPL. To assure proper modulation of your radio, it is recommended that you have your avionics technician adjust its input to match the output of your headset’s microphone.

Active noise reduction

Active Noise Reduction Bandwidth: 30Hz - 700Hz

Noise floor

28dBA SPL (typical)

Maximum ambient noise level

Approximately 118dB SPL at full cancellation

Voltage

7-32VDC

Current

60mA typical, 120mA maximum operating

Fuse/breaker recommended

1/2 amp fast blow (AGC 1/2 fuse)

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Contents Bose Aviation Headset Series Operational Advisories Operational Advisories Declaration of Conformity Contents Description Warranty cardFor proper headset fit Interconnect plug Microphone placementFail-resistant operation Adjusting the volumeMicrophone boom relocation Headset cable relocation Portable battery pack Powering the headsetCharging the Nicad battery pack Nicad rechargeable battery packInserting batteries into the alkaline battery pack Click Installing the wire harness Installed connectorPanel Hole Required Installing the DC power connector Installed DC power connectorCleaning instructions Clear ComfortTM cushion replacement and maintenanceTo remove the cushion and foam liner To install a new foam liner To clean the cushionTo replace the cushion Case of Difficulty Problem What to doTechnical Information Headset Weight Service Warranty periodIf your headset must be returned for service Limited warranty Bose product Page Page
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II specifications

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