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2. Electrical characteristics of dynamic loudspeakers - Wikipedia

   en.wikipedia.org/wiki/Electrical_characteristics...

   Sixteen ohm drivers (or loudspeakers systems) would be connected to the 16-ohm tap, 8 ohm to the 8 ohm tap, etc. This is significant since the ratio between the loudspeaker impedance and the amplifier's impedance at a particular frequency provides damping (i.e., energy absorption) for the back EMF generated by a driver.

3. Loudspeaker - Wikipedia

   en.wikipedia.org/wiki/Loudspeaker

   A horn-loaded speaker can have a sensitivity as high as 110 dB at 2.83 volts (1 watt at 8 ohms) at 1 meter. This is a hundredfold increase in output compared to a speaker rated at 90 dB sensitivity and is invaluable in applications where high sound levels are required or amplifier power is limited.

4. Tweeter - Wikipedia

   en.wikipedia.org/wiki/Tweeter

   Speakers with cone tweeters offered the best stereo imaging when positioned in the room's corners, a common practice in the 1950s, 1960s and early 1970s. During the 1970s and 1980s, the widespread introduction of higher quality audiophile discs and the advent of the CD caused the cone tweeter to fall out of popularity because cone tweeters ...

5. Electrodynamic speaker driver - Wikipedia

   en.wikipedia.org/wiki/Electrodynamic_speaker_driver

   The electroacoustic mechanism most widely used in speakers to convert the electric current to sound waves is the dynamic or electrodynamic driver, invented in 1925 by Edward W. Kellogg and Chester W. Rice, which creates sound with a coil of wire called a voice coil suspended between the poles of a magnet.

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7. Holiday travelers are facing flight cancellations as severe ...

   www.aol.com/news/holiday-travelers-facing-flight...

   Holiday travelers setting out for what is expected to be one of the busiest travel weekends of the year are already facing delays as a severe round of storms rolls into the Southern US.