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Digital Designs, or DD Audio is an American manufacturer of high-end consumer audio products. They produce home and mobile audio products, serving the sound quality and sound pressure categories of the mobile audio market. Nearly all of their products are handmade in the United States.
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 first and simplest method is using a surround sound recording technique—capturing two distinct stereo images, one for the front and one for the back or by using a dedicated setup, e.g., an augmented Decca tree [20] —or mixing-in surround sound for playback on an audio system using speakers encircling the listener to play audio from ...
Available in 8-inch, 10-inch, 12-inch, and 13.5-inch woofer sizes. TW5: JL's only shallow mount subwoofer and only available in 13.5-inch. The mounting depth is a mere 2.54 inches. This subwoofer features 3-ohm nominal impedance and has an RMS of 600 W. Easily mounts in tight places. [16]
7.1 surround sound is the common name for an eight-channel surround audio system commonly used in home theatre configurations. It adds two additional speakers to the more conventional six-channel ( 5.1 ) audio configuration.
The 1925 paper [1] of Chester W. Rice and Edward W. Kellogg, fueled by advances in radio and electronics, increased interest in direct radiator loudspeakers. In 1930, A. J. Thuras of Bell Labs patented (US Patent No. 1869178) his "Sound Translating Device" (essentially a vented box) which was evidence of the interest in many types of enclosure design at the time.
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