Bose FREESPACE 4400 - Manual (Page 8)

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2.0 Designing with the FreeSpace ® 4400 System
The following are examples of correct and incorrect sensing
microphone placements:
Installer’s Note: In applications where ceiling height is less
than 12 ft (3.6 m), the microphone should be wall mounted.
Mic
Correct placement Incorrect placement
Correct placement Incorrect placement
Ceiling Flush
Wall Surface
Sensing
microphone
Sensing
microphone
Sensing
microphone
Sensing
microphone