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HP / Poly / Plantronics' Circumaural (Poly 92638-01 / HP 8K7D9AA#AC3) - Ruggedized Binaural Headset with its bidirectional noise-cancelling microphone, is used by Landing Support Officers on Aircraft Carriers. It delivers clear communication in high-noise environments such as the New York Stock Exchange. We call this the Cone-of-Silence! Noise Canceling Headset with a 4-Pin Quick-Disconnect (QD). Compatible with Poly audio processors and still being used with some office amplifier bases (P10, M10, M12, M22). A 4-Pin Quick-disconnect (QD) connector lets you walk away from the phone while still wearing it.
Features adjustable microphone booms and headband. The 30" Straight cable is robust polyurethane (PU) jacketing material. They are resistant to UV, oil and solvents. They remain flexible over a wide range of temperature eXtremes. American Engineered, Designed in the USA to high-quality Telco standards. ed/hb
Noisy Environments:
Landing Support Officers on Aircraft Carriers
New York Stock Exchange
Auction
Car Race Track
Other Applications:
Air Traffic Controller
Police Radio Dispatch
Public Safety Dispatch
911 Emergency / Ambulance communication services
Even work with Home or Office Desk Phone or PC
Note - Required:
A12CD-S - with PTT (Push-to-talk) Cordless Bases
SHS 1890-XX PTT (Push-to-talk) Amplifier
Wired Amplifier Bases
USB Audio Processors Adapter
Please - Call for Price, Availability and Compatibility
Built-to-order (Non-returnable)
Poly Product # 92083-01 - HP Product # 8K7D9AA#AC3
Poly is now a part of HP
Poly – formerly Plantronics, Inc.
Microphone: The microphone reduces transmitted background noise by 20 dB.
The high-quality gooseneck boom allows the microphone to easily be positioned in front of the mouth. The distance between the front and rear ports reduces the sensitivity at 1 KHz to far field noise by 15 dB compared to close talking response. Compared to on-axis voice, the bi-directional response reduces 90 degree incident noise by 20 dB more and random noise by 5 dB more. The bandpass is limited to 5 KHz and it acoustically filters the higher frequencies which are unwanted on most communication systems.
Circumaural Earcups:
The Noise Reduction Rating (NRR) of the Ruggedized Headsets is 22 dB.
The level of noise entering the users ear when the headset is worn as directed is approximated by the difference between the A-Weighted environmental noise and the Noise Reduction Rating (NRR) of the headset. For example: If the environmental noise level as measured at the ear is 92 dBA, and the NRR of the headset is 22 dB, then the resulting level of noise entering the ear is approximately 70 dBA. The headset must be properly worn to attenuate noise effectively.
Connections:
30" Straight cable to Quick-disconnect (QD)
Note:
Specials order - Non-returnable!
If not in stock 8-10 weeks delivery in normal times (We are not in normal times)
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