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This list of car audio manufacturers and brands comprises brand labels and manufacturers of both original equipment manufacturer (OEM) and after-market products generally related to in-car entertainment that already have articles within Wikipedia. While components sold by these companies have much in common with other audio applications or may ...
Almost all audio preamplifier circuits are built using cascaded common cathode stages. The signal is usually coupled from stage to stage via a coupling capacitor or a transformer, although direct coupling is done in unusual cases. The cathode resistor may or may not be bypassed with a capacitor. Feedback may also be applied to the cathode resistor.
Some head units have built-in stereo amplifiers. Other car audio systems use a separate stand-alone amplifier. Every amplifier has a rated power level sometimes noted on the head unit with the built-in amplifier, or on the label of a stand-alone unit. Coaxial speakers: These are the most common type of car speakers and are often factory-installed.
Transistors were used to replace the radio's audio output vacuum tubes and also the vibrator. This transistorized hybrid radio was available as an option on the 1956 Chevrolet Corvette car models. [6] In 1957, Delco produced an all-transistor signal-seeking car radio that was available for the 1957 Cadillac Eldorado Brougham car models. [7] [8]
A valve audio amplifier or vacuum tube audio amplifier is a valve amplifier used for sound reinforcement, sound recording and reproduction. Until the invention of solid state devices such as the transistor , all electronic amplification was produced by valve (tube) amplifiers.
In car audio systems, large capacitors store energy for the amplifier to use on demand. Also, for a flash tube , a capacitor is used to hold the high voltage . Digital memory