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2. Thiele/Small parameters - Wikipedia

   en.wikipedia.org/wiki/Thiele/Small_parameters

   A speaker with an efficiency of 100% (1.0) would output a watt for every watt of input. Considering the driver as a point source in an infinite baffle, at one metre this would be distributed over a hemisphere with area 2 π {\displaystyle 2\pi } m 2 for an intensity of 1 / ( 2 π ) {\displaystyle 1/(2\pi )} = 0.159155 W/m 2 .

3. List of loudspeaker manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_loudspeaker...

   PMC speakers: United Kingdom Polk Audio: United States ProAc: United Kingdom PSB Speakers: Canada QSC Audio Products: United States Quad Electroacoustics: United Kingdom (brand) Radio Shack: United States RCF audio: Italy Rectilinear Research Corporation: United States Rega Research: United Kingdom Renkus-Heinz: United States ReVox: Switzerland ...

4. Audio power - Wikipedia

   en.wikipedia.org/wiki/Audio_power

   Active speakers comprise two or three speakers per channel, ... 50 watts for 200 to 1000 Hz), and even less the high end (e.g. 5 watts for 1000–20000 Hz). Proper ...

5. Nominal watt - Wikipedia

   en.wikipedia.org/wiki/Nominal_watt

   Nominal wattage is used to simplify the measurement of the efficiency of a loudspeaker.. The impedance of a loudspeaker varies with frequency.This means that if different sine wave tones are fed into the loudspeaker at the same voltage (or the same current), the amount of electric power consumed will vary.

6. In exclusive sit-down, Biden reveals his biggest regret and ...

   www.aol.com/news/exclusive-sit-down-biden...

   Democratic leaders who feared Trump would trounce Biden, among them former House Speaker Nancy Pelosi, urged him to withdraw from the race, an unprecedented step so late in the campaign.

7. At Least 126 People Killed As Strong Earthquake Strikes Near ...

   www.aol.com/news/least-95-people-killed-strong...

   Crews were searching the rubble for a second day for survivors of a deadly earthquake that struck Tibet Tuesday. At least 126 people were killed and at least 188 people were injured.