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2. The 7 Best Wireless Surround Sound Systems for an Immersive ...

   www.aol.com/lifestyle/best-wireless-surround...

   M-Series 5.1. This is another “demi-wireless” offering, because the rear speakers are wired into the subwoofer. That subwoofer, however, is truly wireless and can be placed anywhere in a ...

3. Subwoofer - Wikipedia

   en.wikipedia.org/wiki/Subwoofer

   From about 1900 to the 1950s, the "lowest frequency in practical use" in recordings, broadcasting and music playback was 100 Hz. [9] When sound was developed for motion pictures, the basic RCA sound system was a single 8-inch (20 cm) speaker mounted in straight horn, an approach which was deemed unsatisfactory by Hollywood decisionmakers, who hired Western Electric engineers to develop a ...

4. Television antenna - Wikipedia

   en.wikipedia.org/wiki/Television_antenna

   It is difficult to design a single antenna to receive such a wide wavelength range, and there is an octave gap from 216 to 470 MHz between the VHF and UHF frequencies. So traditionally, separate antennas (outdoor antennas with separate sets of elements on a single support boom) have been used to receive the VHF and UHF channels. [6]

5. Li-Fi - Wikipedia

   en.wikipedia.org/wiki/Li-Fi

   Li-Fi systems could offer a better system to transmit low latency, high volume data across networks. [citation needed] Besides providing a higher speed, light waves also have reduced effects on medical instruments. An example of this would be the possibility of wireless devices being used in MRIs similar radio sensitive procedures. [44]

6. Radio receiver - Wikipedia

   en.wikipedia.org/wiki/Radio_receiver

   The antenna may be enclosed inside the receiver's case, as with the ferrite loop antennas of AM radios and the flat inverted F antenna of cell phones; attached to the outside of the receiver, as with whip antennas used on FM radios, or mounted separately and connected to the receiver by a cable, as with rooftop television antennas and satellite ...

7. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!