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Self-powered Speakers
Powered speakers, also known as self-powered speakers and active speakers, are loudspeakers that have built-in amplifiers. Powered speakers are used in a range of settings, including in sound reinforcement systems (used at live music concerts), both for the main speakers facing the audience and the monitor speakers facing the performers; by DJs performing at dance events and raves; in private homes as part of hi-fi or home cinema audio systems and as computer speakers. They can be connected directly to a mixing console or other low-level audio signal source without the need for an external amplifier. Some active speakers designed for sound reinforcement system use have an onboard mixing console and microphone preamplifier, which enables microphones to be connected directly to the speaker. Active speakers have several advantages, the most obvious being their compactness and simplicity. Additionally the amplifier(s) can be designed to closely match the optimal requirements of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AppleDesign Powered Speakers (M6082) Back
Apple PowerCD is a CD player sold by Apple Computer in 1993 and discontinued several years later. It was a re-badged Philips-designed product (Philips CDF-100) which was sold in addition to Apple's speakers and also included a remote control. The PowerCD was capable of reading Kodak photo CDs, data CDs and audio CDs. It can connect to Macintosh personal computers through SCSI and also to stereo systems and televisions. History With the success of the Apple Newton, in mid-1992 Apple Industrial Design Group created a division called Mac Like Things which was to focus on what they saw as a whole new market for Apple in consumer electronic devices. The PowerCD marked Apple's first stand-alone consumer-oriented product brought to market, which did not require a computer for use. It was analogous to Sony's Discman portable CD players of the time, however, unlike Sony's and most others, Apple's could also be used as computer peripheral as well. And while most desktop Macs at the time i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speaker Cable
Speaker may refer to: Society and politics * Speaker (politics), the presiding officer in a legislative assembly * Public speaker, one who gives a speech or lecture * A person producing speech: the producer of a given utterance, especially: ** In poetry, the literary character uttering the lyrics of a poem or song, as opposed to the author writing the words of that character; see Character (arts) Electronics * Loudspeaker, a device that produces sound ** Computer speakers, speakers sold for use with computers ** Speaker driver, the essential electromechanical element of the loudspeaker Arts, entertainment and media * Los Speakers (or "The Speakers"), a Colombian rock band from the 1960s * ''The Speaker'' (periodical), a weekly review published in London from 1890 to 1907 * ''The Speaker'' (TV series), a 2009 BBC television series * "Speaker" (song), by David Banner * "Speakers" (Sam Hunt song), 2014 * ''The Speaker'', the second book in Traci Chee's Sea of Ink and Gold trilo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynamic Range
Dynamic range (abbreviated DR, DNR, or DYR) is the ratio between the largest and smallest values that a certain quantity can assume. It is often used in the context of signals, like sound and light. It is measured either as a ratio or as a base-10 ( decibel) or base-2 (doublings, bits or stops) logarithmic value of the difference between the smallest and largest signal values. Electronically reproduced audio and video is often processed to fit the original material with a wide dynamic range into a narrower recorded dynamic range that can more easily be stored and reproduced; this processing is called dynamic range compression. Human perception The human senses of sight and hearing have a relatively high dynamic range. However, a human cannot perform these feats of perception at both extremes of the scale at the same time. The human eye takes time to adjust to different light levels, and its dynamic range in a given scene is actually quite limited due to optical glare. The ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Meyer (audio Engineer)
John Meyer is a pioneer in the sound reinforcement industry. In 1979 he founded Meyer Sound Laboratories with his wife, Helen Meyer. Biography John Meyer grew up in Berkeley, California. His earliest involvement with audio was in the late 1950s at the radio station KPFA. He received a radiotelephone third class license at 12 years old, and a second class license when he was 15. He attended Oakland High which was one of the first schools in the country to have an audio department. In the audio department he would build consoles and other audio devices John Meyer started his career in 1967 working in a Berkeley hi-fi store doing custom installs. There he met Steve Miller, who was looking to outfit his band. John Meyer assembled a custom amplification system for The Steve Miller Band when they appeared at the Monterey Pop Festival. John worked with Jim Meagher of Meagher Electronics at the Monterey Pop Festival. Soon after John Meyer started a company called Glyph to design and bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meyer Sound Laboratories
Meyer Sound Laboratories is an American company based in Berkeley, California that manufactures self-powered loudspeakers, multichannel audio show control systems, electroacoustic architecture, and audio analysis tools for the professional sound reinforcement, fixed installation, and sound recording Sound recording and reproduction is the electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recordin ... industries. The company's emphasis on research and measurement has resulted in the issuance of dozens of patents, including for the now-standard trapezoidal loudspeaker cabinet shape. Meyer Sound has pioneered other technologies that have become standard in the audio industry, including: processor-controlled loudspeaker systems, self-powered loudspeakers, curvilinear arraying, cardioid subwoofers, and source independent measurement. So ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
