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The first SoundLink product was released in 2009 [1] and used a USB wireless transmitter plugged into the computer to receive audio from the computer (using a proprietary protocol— not Bluetooth). [2] The system included a remote control. Reviewers criticized the high price of US$550. [3] [4]
Some PA systems have speakers that cover more than one building, extending to an entire campus of a college, office or industrial site, or an entire outdoor complex (e.g., an athletic stadium). A large PA system may also be used as an alert system during an emergency. PA systems by size and subwoofer approach
Modern home cinema systems typically augment the audio output from a DVD player or Blu-ray player with a multi-channel power amplifier and anywhere from two speakers and a stereo power amp (for stereo sound) to a 5.1 channel amplifier and five or more surround sound speaker cabinets (with a surround sound system).
As of July 2017, the first-generation Echo maintained an 83% score on GearCaliber, a review aggregator. [37] Although the Echo is intended to be voice-controlled at the unit, a microphone-enabled remote control similar to the one bundled with the Amazon Fire TV is available for purchase. The remote was also bundled with early units.
Amazon Alexa, or, Alexa, [2] is a virtual assistant technology largely based on a Polish speech synthesizer named Ivona, bought by Amazon in 2013. [3] [4] It was first used in the Amazon Echo smart speaker and the Amazon Echo Dot, Echo Studio and Amazon Tap speakers developed by Amazon Lab126.
Community Professional Loudspeakers is an American manufacturer of loudspeakers and sound reinforcement equipment.The company has been located in the Philadelphia area since its inception in 1968, and has occupied its present location in Chester, Pennsylvania since 1981.
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