The car is a mobile home. Many people "live" in the car every day, even more than the house. Therefore, the modern good car, in addition to sitting comfortably, there is no sound, sweet music in the car seems to be a good car. To have beautiful music, the right car audio system is of course essential. How to choose the right sound for your car?
To install a car stereo, the most important thing is to choose equipment based on your personal musical preferences. If you like lyric music, you don't have to install huge equipment. Basically a subwoofer is enough. If the player is a rock music lover, and often has a shocking effect, an 8-inch or 10-inch subwoofer is indispensable. Good car audio design, in addition to the choice of good audio equipment, the layout of the sound field is a decisive factor. In this regard, the position of the horn, the level of the sound rate must be fully taken care of, so that the sound field coverage in the car is expanded to take care of all aspects.
A good car stereo is definitely not a simple power amplifier for the car, plus a few large and small speakers. Not the more speakers, the better the sound. Because if these devices are not well designed, installed, debugged, and no matter how good the speakers are, they can't sing good music. On the contrary, improper installation, playing music, like a group of vocal training. The people are singing, they can only spend money for sin.
In addition to the sound field, speakers and other sound-emitting equipment, the environment inside the car should be quiet enough to allow these devices to fully play. In this respect, it is necessary to install a shock absorbing plate for the automobile, so that the noise caused by the friction of the engine, the body and the wind when driving, can be effectively isolated by the shock absorbing plate when being introduced into the vehicle. In addition, a stable power supply is the last thing to consider. Make sure that the source is not affected by the instability of the supply voltage.
In the process of assembling the car audio, the following points should be paid special attention: First, the treble should be as close as possible to the midrange. If it is too far away, serious frequency hopping will occur. If the coaxial speaker can be used, that is, the high sound is placed in the middle sound, the frequency can be effectively reduced, and the phase is easy to grasp. Secondly, if the space inside the car is small, remember not to use the three-way design, which affects the sound field positioning due to the frequency handover error. Third, the directivity of the treble position absolutely determines the position and depth of the sound field. It is necessary to test different positions. Fourth, the midrange part should choose a high quality unit, and its low frequency should be down to 80hz to create a dynamic performance of the front sound field. Fifth, use the machine to measure whether the measurement is correct. In addition, a shock absorbing plate should be added to the door panel to prevent the low frequency from causing noise to affect the sound field.
After satisfying the above basic requirements, the directions of the high, medium and low woofers are matched, and then the instrument can be tuned to obtain high-quality sound in the car.
After a good sound design and installation, of course, you must also take care of the overall beauty of the car. In this respect, fiber decoration is popular in recent years. The fiber has high plasticity and can be designed according to the position of different horns to make different curvature shapes, which greatly improves the aesthetic appearance of the automobile. It makes the car not only have good sound effects, but also provides more room for car audio assembly.
The economical and pragmatic car audio player may wish to purchase the equipment step by step. This method can eliminate the big bleeding in the wallet and assemble the good equipment. However, in this way, first, the player has to plan an investment plan, list the entire purchase list, and arrange the components that have been purchased according to the urgency. In this way, you can purchase it gradually, and finally you can add good equipment to your car and get the highest sound experience.
A communication Cable Assembly is a Wire Harness used to transmit signals. A communication cable consists of a plurality of mutually insulated wires or conductors to form a cable core, with a communication line with a sealing sheath on the outside. Some are also equipped with an outer sheath outside the sheath. There are various laying methods such as overhead, direct burial, pipeline and underwater. According to the structure, it is divided into symmetrical, coaxial and integrated cables; according to functions, it is divided into field and permanent cables (underground and submarine cables). The communication cable has a wider transmission frequency band, a larger communication capacity, and less external interference, but it is not easy to repair. It can transmit phone calls, telegrams, data and images, etc.
Communication cable assembly can be classified mainly by cable types and applications
According to the type of cable, communication cables are classified as follows:
1. Single-conductor: refers to the most primitive communication cable, a single-conductor loop, with the earth as the regression line.
2. Symmetrical cable: a loop composed of two identical conductors under ideal conditions.
3. Coaxial cable: The inner and outer conductors on the same axis form a loop, the outer conductor surrounds the inner conductor, and the two are insulated at the same time.
Then they are classified according to the application as follows:
1. Long-distance cable: The transmission distance is long, and it is generally multiplexed. Most of them are directly buried in the ground. In a few cases, they are installed overhead or installed in pipelines.
2. Cables in the city: the wires in the cable are "paired and paired", and the number of pairs is large. Generally installed in the pipeline, a small number of urban cables are attached to the building or installed overhead.
3. Office cable: mainly refers to the communication cable used in the telecommunications office, generally installed on the distribution frame, and some are installed in the wiring trough; the office cable is used between the transmission equipment and the switching equipment in the telecommunications office, and other Inside of intra-office equipment. In order to prevent fire inside the telecommunication bureau, it is sometimes necessary to add a flame retardant sheath to the bureau cable.
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