The performance of the speaker's impedance sound

The organic combination of subjective perception and objective test, can fully and truly reflect the comments of products, and is no longer empty, one-sided, even exaggerated, generally speaking, the smooth over a fault out of thin air, too. But now tend to focus only on the frequency response curve, and discuss the apparent impedance curve, impedance of the loudspeaker system is really important, many listen to the sense of defects can be reflected from the impedance curve out.

　　The main technical parameters of the speaker system are generally marked with impedance, usually 4, or 8, this value refers to the rated impedance, is a pure resistance value, the national standard GB7313-87 is 4, 16, 8. The impedance of speaker system is a complicated problem, it is said that there are no tens of thousands of words, and it is very difficult to understand.

　　The impedance curve of the inverted box does not appear obvious double hump, or only a single peak, it is not the design itself has a defect that it must be a mistake in the production process. The volume is too large in the double peaks sometimes see the high frequency impedance peak was significantly higher than the peak frequency, phase inverted tube acoustic radiation is too small, the resonant frequency of the whole system is too low, the feeling seems to listen to low dive deep, but still feel a sense of inadequacy, no soft power. If the low frequency peak double Impedance Peak is obviously larger than that in the high frequency peak, the acoustic radiation phase inverted tube is too strong, the low frequency has been artificially increase over the volume is big, but the transient response will become poor, low frequency levels will be greatly damaged, there is no "quantity" and "quality".