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After spending a short period of time dabbling in professional audio, Polk Audio turned its attention to affordable high-performance home audio. 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 ...
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 ...
The Reference Series Model 105/3, featuring the second generation of Uni-Q technology, was voted "Best imported Speaker" by the Japanese press in 1992. The New York Times has recognised KEF as "a leading audio company in Europe", and also "well known to American High-End audiophiles". [6] In 1992, KEF was acquired by Gold Peak Group. [2]
Acoustic Research was a Cambridge, Massachusetts-based company that manufactured high-end audio equipment. The brand is now owned by VOXX.Acoustic Research was known for the AR-3 series of speaker systems, which used the 12 in (300 mm) acoustic suspension woofer of the AR-1 with newly designed dome mid-range speaker and high-frequency drivers.
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Performance-wise, the 200S keeps up with the competition. It cleared out a 10’ by 8’ room filled with 343 micrograms per cubic meter of PM 2.5 down to a baseline of five in about 30 minutes.
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