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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 2018, Nakamichi added 4 more models into its Shockwave lineup, incorporating dual subwoofers, quad modular surround speaker technology and DTS:X compatibility. The flagship Shockwave Ultra 9.2 DTS:X, Shockwave Elite 7.2 DTS:X and Shockwave Plus 5.2 were the industry's first soundbars designed with two subwoofers, while the Shockwave Pro 7.1 ...
A rotary woofer is a subwoofer-style loudspeaker which reproduces very-low-frequency content by using a conventional speaker voice coil's motion to change the pitch (angle) of the blades of an impeller rotating at a constant speed. The pitch of the fan blades is controlled by the audio signal presented to the voice coil, and is able to swing ...
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