In the stage sound system, how to match the speakers with the power amplifier?

Speakers and amplifiers are both important components of stage audio. When designing and installing a complete sound system, how to match speakers and amplifiers?

From an artistic point of view, the matching of the power amplifier and the speaker should be suitable for cold and warm sound, moderate hardness and softness, and finally make the whole equipment restore the sound neutral.

From a technical perspective, it is necessary to follow three aspects of matching.

The first is power matching. Theoretically, the rated power of the speaker is equal to the rated output power of the power amplifier, and it can work normally. However, in order to avoid the speaker from getting enough driving power and affecting the effect of the sound system, in the field of professional audio equipment, the power amplifier power is generally required to be 1.2 ~ 2 times.

The second is impedance matching. If the input impedance of the speaker is lower than the output impedance of the power amplifier, it will cause distortion, and in serious cases, it may even cause damage to the amplifier. Therefore, the output impedance of the amplifier is the same as the input impedance of the English speaker.

Another is the matching of damping coefficients. Damping is an index that measures the internal resistance of the power amplifier output stage to the amount of speaker damping. KD = power amplifier rated output impedance / power amplifier output internal resistance. The damping coefficient determines the amount of resistance that the speaker bears. Some speakers require a high damping coefficient to control the movement of the unit. If the damping coefficient of the power amplifier is insufficient, the unit will lose control, and excess resonance and audio loss will occur. Conversely, if the damping coefficient of the amplifier is too high than the speaker needs, the sound will change. Really. That is to say, if the damping coefficient is too high, the sound from the speaker will be dry and not rounded. If the damping coefficient is too low, the sound from the speaker will be a little confused and stick together.

The matching of various components in a set of professional audio equipment requires very professional knowledge. The audio kits developed and produced by Beilarly audio manufacturers have been equipped with audio equipment such as speakers, amplifiers, microphones, etc. according to the needs of the occasion, which can avoid the trouble of separately matching components. Solve the basic application needs for customers.