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2. Air Motion Transformer - Wikipedia

   en.wikipedia.org/wiki/Air_Motion_Transformer

   The Air Motion Transformer (AMT) is a type of electroacoustic transducer.Invented by Oskar Heil (1908–1994), it operates on a different transduction principle from other loudspeaker designs, such as moving coil, planar magnetic or electrostatically-driven loudspeakers, and should not be confused with planar or true ribbon loudspeakers.

3. Ribbon microphone - Wikipedia

   en.wikipedia.org/wiki/Ribbon_microphone

   The voltage output of older ribbon microphones is typically quite low compared to a dynamic moving coil microphone, and a step-up transformer is used to increase the voltage output and increase the output impedance. Modern ribbon microphones do not suffer from this problem due to improved magnets and more efficient transformers and have output ...

4. Moving iron speaker - Wikipedia

   en.wikipedia.org/wiki/Moving_iron_speaker

   Moving iron speaker Moving iron sounder. The moving iron speaker was the earliest type of electric loudspeaker. They are still used today in some miniature speakers where small size and low cost are more important than sound quality. A moving iron speaker consists of a ferrous-metal diaphragm or reed, a permanent magnet and a coil of insulated ...

5. Electromagnetic acoustic transducer - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_acoustic...

   An electromagnetic acoustic transducer (EMAT) is a transducer for non-contact acoustic wave generation and reception in conducting materials. Its effect is based on electromagnetic mechanisms, which do not need direct coupling with the surface of the material.

6. AOL Mail

   mail.aol.com

   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!

7. Could Buying Boeing Stock Today Set You Up for Life? - AOL

   www.aol.com/could-buying-boeing-stock-today...

   The idea behind buying Boeing (NYSE: BA) stock is simple. The ingredients for a recovery are in place, and so is a new chief executive officer, Kelly Ortberg, appointed in the summer to lead a ...

8. Single coil guitar pickup - Wikipedia

   en.wikipedia.org/wiki/Single_coil_guitar_pickup

   The coil is connected to a multimeter that indicates the voltage changes when the string moves. This signal is normally sent to an amplifier. A single-coil pickup is a type of magnetic transducer, or pickup, for the electric guitar and the electric bass. It electromagnetically converts the vibration of the strings to an electric signal.

9. La Niña Still Expected To Emerge; Although Weak, There ... - AOL

   www.aol.com/news/la-ni-still-expected-emerge...

   Cooler-than-average water temperatures in the equatorial Pacific Ocean are still expected to reach the criteria for a weak La Niña by the end of January, according to an updated outlook released ...