How to properly allocate KTV audio and professional power amplifiers?Car stereo Vendor

　　When designing and installing a KTV audio system, it is inevitable to encounter the problem of matching between professional power amplifiers and KTV speakers. Even many enthusiasts have certain misunderstandings about how to mix. Din Taifeng, as an amplifier manufacturer, has a different sound from professional amplifiers and speakers with the same sound source and different brands.

　　From the artistic point of view, the matching of professional power amplifiers and speakers should be warm and cold, soft and hard, and ultimately make the whole set of devices restore the tone to be neutral. From the technical point of view, the following points should be paid attention to when connecting professional power amplifiers and speakers: power matching; impedance matching; damping coefficient matching. Next, Shenghuang Audio will discuss with us in three aspects.

　　1. Power matching problem

　　The extra power of the KTV audio is equal to the extra output power of the professional power amplifier, so that the device can work normally. Shenghuang Audio recommends that you prefer a large horse-drawn cart than a small horse-drawn cart at the end. When conditions permit, you can choose high-power professional power amplifiers, never choose low-power amplifiers. Under normal circumstances, at least the additional output power of professional power amplifiers should be more than twice the power of the speakers. Large horse-drawn small cars, although it will cause unnecessary waste in power, but the situation of small horse-drawn large cars makes the speakers unable to obtain the sufficient propulsion power, and the entire KTV sound system cannot play the best KTV sound effect.

　　2. Impedance matching

　　The output of the professional power amplifier and the input impedance of the speakers should also be the same. Although there are some slight deviations between the two, which will not have a significant impact on the sound quality, but only affect the output power of the professional power amplifier, it must be reminded that if the speaker input impedance is much lower than the professional power amplifier output impedance, it will This causes a significant increase in distortion and damage to professional power amplifiers in severe time. As a power amplifier manufacturer, Din Taifeng suggests that we should try our best to choose the two in common.

　　3. Damping coefficient matching

　　The damping coefficient KD is defined as: KD=Professional power amplifier additional output impedance (equal to speaker additional impedance)/Professional power amplifier output internal resistance. Because the internal resistance of the professional power amplifier has actually become the resistance of the speaker, the KD value determines the resistance of the speaker. The larger the KD value, the heavier the resistance value. Of course, the KD value of professional power amplifiers is not the better. If the KD value is too large, the speaker resistance will be too heavy, which will cause the pulse front to increase and reduce the transient response index. Therefore, one-sided pursuit of a large KD value should not be one-sided when choosing a professional power amplifier.

　　What you need to know is that if the damping coefficient is too high, the sound from the speaker will be dry and not round; if it is low, it will easily show the feeling of sound sticking together. Therefore, when we make professional power amplifier configuration, we should pay attention to the control of the damping coefficient of the stone machine between 30 and 40. The internal resistance of the amplifier itself is high. The power amplifier manufacturer recommends not to exceed 10.

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