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Subwoofers received a great deal of publicity in 1974 with the movie Earthquake, which was released in Sensurround. Initially installed in 17 U.S. theaters, the Cerwin-Vega "Sensurround" system used large subwoofers that were driven by racks of 500 watt amplifiers, triggered by control tones printed on one of the audio tracks on the film.
It was followed by the A150 floor standing speaker, and the A-70. Boston Acoustics marketed these speakers to audio specialty retailers and became highly respected for producing premium quality sound at very reasonable prices. The Boston-area retail chain Tweeter was one of the first and largest stores to sell them.
The system used the same speakers as the 3-2-1. [9] The Freestyle was replaced by the "CineMate" in 2005, which has only RCA connectors and uses the same speakers as the 321 Series II. [10] A fibre optic input was added for the CineMate Series II, which was released in 2009.
25 of the very best deals from Nordstrom's Half-Yearly Sale: Rothy's, Le Creuset, Hoka and more. ... The best smart speakers for seniors in 2025: Alexa, Google or Siri. See all tech.
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.
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 ...
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