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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.
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.
One of the first enclosed speaker systems ever in the car audio market. 8W2: Eight-inch woofer for use in the new line of JL Audio PowerWedges. Following that design, subsequent 10- and 12-inch speaker systems were also released which were as well received as the 8-inch. The W3 Series: These subwoofers come in five different sizes ranging from ...
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 ...
Loudspeaker enclosures range in size from small "bookshelf" speaker cabinets with 4-inch (10 cm) woofers and small tweeters designed for listening to music with a hi-fi system in a private home to huge, heavy subwoofer enclosures with multiple 18-inch (46 cm) or even 21-inch (53 cm) speakers in huge enclosures which are designed for use in ...
It was a hybrid three-way design with two internal amplifier channels. [9] An early example of a bi-amplified powered studio monitor is the Altec 9846B, introduced in 1971, which combined the passive 9846-8A speaker with the new 771B Bi-amplifier with 60 watts for the woofer and 30 watts for the high frequency compression driver. [10]
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