Behind each of Cambridge Sound Management's products is our patented Qt Quiet technology™, a low-voltage, distributed audio system that is a generation ahead in sound masking, paging and voice distribution. Qt Quiet technology™ overcomes significant design and installation issues with previous generations of sound masking systems. The result is a technology that is flexible, uncomplicated and effective — and can be installed at the lowest cost in the industry.

•	The sound spectrum of Qt Quiet technology™ systems is the ideal sound masking sound as identified by renowned acoustician, Leo Beranek
•	Qt™ emitters (speakers) are direct-field, meaning they are located within the target office area. This allows the optimal spectrum to be pre-programmed with no need for further adjustment or on-site tuning.
•	As illustrated in the comparison chart below, Qt Quiet technology™ systems achieve the same Articulation Index (AI) as, but at a lower volume than, plenum-based systems.
•	Qt Quiet technology™ delivers more energy in the octave bands that contribute the most to speech privacy (1000Hz, 2000Hz and 4000Hz) and less energy in the lower frequency bands (125Hz, 250Hz and 500Hz) that contribute less to maksing speech. The result is a quieter sound for equivalent speech privacy.

•	Qt™ emitters achieve superb special uniformity, allowing 170 degrees of sound dispersion on a 10’x10’ grid, assuming a 9’ ceiling. The combination of emitter density and sound dispersion assures spacially-uniform sound, as a listener can hear sound from approximately 6 emitters at any point in the workspace.
•	A control module produces 4 channels of uncorrelated sound and the Qt™ emitters are programmed to automatically sequence through all 4 channels to assure a smooth sound with no acoustical interference.
Directivity of an Qt Emitter at 2kHz (Measured by Armstrong Inc.)

•	Since Qt™ emitters are located directly in the target area, layout and installation is simple and straightforward.
•	Standard CAT 3 or CAT-5 cables with pre-wired RJ-45 plugs snap into the Qt™ emitters. Custom length cables can easily be made on site by any low-voltage installer.
•	Emitters are daisy-chained together, up to 300 per zone. A zone consists of any open plans space, group of private offices, or other area requiring the same privacy level.

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