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A home theater in a box (HTIB) is an integrated home theater package which "bundles" together a combination DVD or Blu-ray player, a multi-channel amplifier (which includes a surround sound decoder, a radio tuner, and other features), speaker wires, connection cables, a remote control, a set of five or more surround sound speakers (or more ...
In a closed-box loudspeaker, the air inside the box acts as a spring, returning the cone to the zero position in the absence of a signal. A significant increase in the effective volume of a closed-box loudspeaker can be achieved by a filling of fibrous material, typically fiberglass, bonded acetate fiber (BAF) or long-fiber wool.
May 2012 – the SUB wireless subwoofer. [57] February 2013 – the PLAYBAR soundbar speaker. [58] October 2013 – the Play:1, a third, compact, smart speaker. [59] [60] February 2015 – Sonos announced the limited edition Blue Note Play:1, a collaboration with Blue Note Records, [61] which went on sale in March. [62]
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 ...
Two-inch port tube installed in the top of a Polk S10 speaker cabinet as part of a DIY audio project. This port is flared. Unlike closed-box loudspeakers, which are nearly airtight, a bass reflex system has an opening called a port or vent cut into the cabinet, generally consisting of a pipe or duct (typically circular or rectangular cross section).
The Magna Organ was an electric-fan driven free reed organ with the microphone sealed in a soundproof box, instead of the electrostatic pickups used on electrostatic reed organs. [ note 1 ] Early designs of the Magna Organ were a kind of additive-synthesizer that summed-up the partials generated by the frequency-multipliers .
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