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dB drag racing is a competition rewarding the person who can produce the loudest sound inside a vehicle. [1] [2] The "dB" means decibels of sound pressure level (SPL).In these competitions, SPL of over 140 decibels is common; and the international record in 2003 was 171.5 dB, with records as high as 180 dB claimed more recently.
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 ...
The Car Audio Sports Organization is MECA (Mobile Electronics Competition Association, Inc.) started in 1999. SQL (Sound Quality League) focuses on high performance musical systems: Sound Quality (SQ and SQ2), custom installs, and RTA Freq-Out contests. Vehicles are classified by audio system complexity of design.
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.
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 ...
A bespoke stereo system including a CD changer, CD head unit, amplifier, uprated door speakers and an acoustic rear shelf containing 200W 6x9 speakers was specified by Clarion. One was raffled at a Radio 1 event, and Radio 1 ran a competition on air to win one. [citation needed]
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