Cars are most in need of music places: When you travel alone in the vast journey, melodious music can sweep away the journey of Lawton, full of energy toward the next journey; car into the sea when you do not know where to go, the beautiful music can be ease the tension of mind, if coupled with electronic maps and satellite navigation devices, can also help you out of trouble as soon as possible; car is one of the most inappropriate place to listen to music: noise, make beautiful music compromised resonance; interior space is limited , together with plate glass reflection of sound waves, all of which makes car audio and home audio has different characteristics. Flying car audio shop in Shenzhen, Changsha, Leung, senior technician in the audio conversion for nearly a decade after I asked, he's related to Car Audio knowledge of the parameters and terms to explain:

Power: it is the sound system one of the most important parameters, that sound system with a load capacity. Power in three ways: First, the peak power that the system's maximum output power of the moment; the second is the maximum continuous output power, this is a very important indicator; third largest power without distortion, for the hi-fi system, it is very important of. Usually the system 50W continuous output power, peak power up to 1000W or more, without distortion power is only 20W or so.

Signal to noise ratio: It is important that quality sound system parameters, is the output signal strength and noise signal intensity ratio to take common logarithm multiplied by 10, the unit is dB. Portable tape recorders poor signal to noise ratio of less than 30 dB, while the high-end CD players up to 90 dB signal to noise ratio. For example, Japan Clarion CD host is one of the best;

Frequency response: referred to as frequency response, is that the system of reproduction of a wide range of indicators, the human ear can feel the frequency range 20-20000Hz. High-quality speakers, amplifier and CD player to achieve this range of frequency response. For example, the world's top stage speaker Morel Israel and "the United States respect" JBL amplifier's frequency response on the 5-25000HZ. Far beyond the normal index, called the audio equipment in the powerhouse.