The owner Mr. told reporters, buy a car after he found the car sound effects is not very good, in order to enjoy the more interesting to listen to music, his car accessories market installed a subwoofer, but not for a few days to issue a "Squeaky" sound. Through careful observation, he found that the sound is installed in the vehicle back-up car's audio system.
CD audio extraction electro impact host life
Subsequently, he drove to professional car audio shop inspections, maintenance workers soon found the answer, because when you install the subwoofer to the power cord directly connected to the car CD host behind. Then, repair the master of the subwoofer to the power cord from power battery for independent and equipped with a control line after ignition audition, noise elimination.
Shaanxi Province Rui-auto service co., Ltd. Chan master told reporters, like reproducing this high-power Automotive electrical, should be separate from the car battery on charge. Mr. audio was made noise, because when you install the subwoofer audio cable and power cord is connected in the car behind the CD master. So as long as the vehicle is powered on, the audio will be powered on, the car voltage instability, will have the current interference in the sound of audio to produce the current sound. This installation method is simple but very unsafe, because then the power cable from the subwoofer is to cut the power cable from the host, if the last closed are not good, it is easy to cause a short circuit, and this method will make the sound is turned on for a long time, reducing the sound of life. Therefore, the installation of car audio (including DVD, etc.), it is best not to touch the original car circuit, which is separate from the batteries for electric, and adding the line of control.
Privacy read circuit safety and value
In addition to audio, DVD, navigation, and other devices need to be aware of the problem of received power, including car alarm also received power exists. New cars available, many car owners for car theft concerns will give car retro alarm with the alarm, and now is when the owners are usually get off the door after the anti-theft system is entering the alert once inductor induction into the vehicle subjected to collision, the car door was prized, brakes, ignition of the four levels of illegal operations, anti-theft host issue commands to the vehicles to cut off oil circuit, circuit.
It is an automobile electric appliance co., Ltd representative in Shaanxi, Mr. Hu, describes vulnerable because blocking circuit, therefore at present to adopt this anti-theft way products. Now the products are generally cut through cut-outs, so the circuit car alarm with remote installation also has a dynamic car circuit. Some product installation requires editing the original car circuit, and some automobile manufacturers is expressly provided for the user does not have arbitrarily to shearing line and adapted lines, otherwise no warranty. If you change the original car circuit, for second-hand trading, the residual value than the original circuit car low-income. Therefore, it is best to use when installing the alarm with a "no-thread trimmer" product or installation methods
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