What are the technical indicators for evaluating the horn

　　Generally, people have no specific concept about the quality of loudspeakers. In addition to the intuitive feeling on the quality, they express their own opinions on the sound quality, which is determined by subjective feelings. In the professional field of speakers, these can be felt through quantification. How to quantify them? It is determined from some parameters of the horn.

　　First, speaker power: the maximum rated power refers to the maximum power that the speaker can withstand without causing damage, and the minimum recommended power refers to the input electrical power required to generate appropriate sound pressure. It is generally recommended to provide 2-3 times of the maximum rated power to the horn, so that the horn has enough dynamics to reduce distortion.

　　Second, horn sensitivity: sensitivity is a very important indicator of the horn. It is generally defined as the sound pressure generated at the reference 1M by adding an electrical signal of 1W rated power to the input end of the loudspeaker system, expressed in dB. Under the same conditions, speakers with high sensitivity sound louder. If the sensitivity is too high, the dynamic range of the loudspeaker will be reduced; If the sensitivity is too low, more power is required for driving, and the power of the power amplifier is required to be sufficient. The sensitivity of professional speakers is generally 98-110dB; The high fidelity loudspeaker is 70-98dB.

　　Third, nominal impedance of loudspeaker: the nominal impedance of loudspeaker is used to match the output impedance of power amplifier, which can be 16 ohm, 8 ohm, 6 ohm and 4 ohm. According to the structure of speakers and power amplifiers, they can be flexibly matched.

　　Fourth, the frequency response of the loudspeaker: the change of sound pressure level emitted by the loudspeaker within the effective frequency range.

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