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With the release of the first successful model in 1974, the Monitor 7, Polk Audio was gaining recognition in audiophile circles. Polk Audio used a two-way configuration on almost all its speakers, such as the popular Monitor 10 and Monitor 12, typically with 6.5-inch mid/bass drivers with rubber surrounds and passive radiators.
Oswalds Mill Audio: United States Panasonic: Japan Peavey Electronics: United States Philips: Netherlands Pioneer: Japan 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 ...
From about 1900 to the 1950s, the "lowest frequency in practical use" in recordings, broadcasting and music playback was 100 Hz. [9] When sound was developed for motion pictures, the basic RCA sound system was a single 8-inch (20 cm) speaker mounted in straight horn, an approach which was deemed unsatisfactory by Hollywood decisionmakers, who hired Western Electric engineers to develop a ...
In 2004, the firm bought speaker company Definitive Technology; [3] in 2006, it bought Polk Audio. [4] In 2008, the companies adapted a holding company strategy, and their parent became DEI Holdings, Inc. [5] In 2011, the company was bought by private equity firm Charlesbank Capital Partners. [6]
Two-inch port tube installed in the top of a Polk S10 speaker cabinet as part of a DIY audio project. This port is flared. Unlike closed-box loudspeakers, which are nearly airtight, a bass reflex system has an opening called a port or vent cut into the cabinet, generally consisting of a pipe or duct (typically circular or rectangular cross section).
This list of car audio manufacturers and brands comprises brand labels and manufacturers of both original equipment manufacturer (OEM) and after-market products generally related to in-car entertainment that already have articles within Wikipedia. While components sold by these companies have much in common with other audio applications or may ...
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