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A bridge-tied load (BTL), also known as bridged transformerless and bridged mono, is an output configuration for audio amplifiers, a form of impedance bridging used mainly in professional audio & car applications. [1] The two channels of a stereo amplifier are fed the same monaural audio signal, with one channel's electrical polarity reversed.
Manufacturers have a team of technical engineers, writers and illustrators who compile information for these service manuals. Some companies create aftermarket repair manuals for the general public to purchase such as Clymer Haynes [1] and Triple M FZCO. [2] These manuals are also generally available as online auto repair manuals.
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 ...
Modern home cinema systems typically augment the audio output from a DVD player or Blu-ray player with a multi-channel power amplifier and anywhere from two speakers and a stereo power amp (for stereo sound) to a 5.1 channel amplifier and five or more surround sound speaker cabinets (with a surround sound system).
Other features included a 1920×1200 15.4-inch LCD, and a subwoofer integrated into the bottom of the battery casing, with the 12-cell battery (the 16-cell battery does not include a subwoofer.) Earlier models came with an ATI Mobility Radeon 9700 with 128 MB of memory, and later models with the Mobility Radeon 9800 with 256 MB of memory.
As a rule, transmission line speakers tend to have exceptionally high fidelity low frequency response far below that of a typical speaker or subwoofer, reaching into the infrasonic range (British company TDL's studio monitor range from the 1990s quoted their frequency responses as starting from as low as 17 Hz depending upon model with a ...
Modular components made by Samsung and Harman Kardon, (from the bottom) an audio digital receiver, DVD player, and HD TV receiver A Sony "midi" hi-fi from the late 1980s. Despite its appearance mimicking separate components, this is an all-in-one unit featuring a record player, a dual cassette tapedeck, a digital tuner, and an amplifier with ...
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. Boston Acoustics entered the mobile audio category in 1983.