A horn speaker is an electro-acoustic transducer that converts electrical energy into sound energy and radiates it into the air. Speakers are used in movies, TV, radio, and all kinds of occasions that require speakers. The main performance indicators of the horn speaker are: sensitivity, frequency response, rated power, rated impedance, directivity, and distortion.
Sensitivity: refers to the sound pressure level measured at a distance of one meter from the vertical axis of the speaker surface when a 1W/1KHZ sine signal is input to the speaker input. The unit of sensitivity is decibels. Power Rating: AES and RMS Standard Loudspeaker frequency response: Under the action of constant voltage, the sound pressure level radiated by the loudspeaker horn varies with frequency at a certain distance from the reference point on the reference axis. The frequency response is generally recorded on a graph with a logarithmic frequency scale as the abscissa, that is, the frequency response curve.
Speaker Nominal Impedance: The nominal impedance value on the speaker. At this impedance, the loudspeaker can get maximum power. The rated impedance of the electric carton speaker is specified as the minimum value after the first formant from low frequency to high frequency on the impedance curve. The impedance at this time is close to a pure resistance, usually 4, 8, 16 ohms.
Highway rural air defense horn remote horn horn, highway rural air defense horn remote horn horn Loudspeaker Transient Distortion: A distortion caused by poor transient characteristics of loudspeakers. When the speaker is actually used, the replayed programs, such as language and music, are all transient sounds, that is, the amplitude of the signal changes rapidly with time, and the vibration system of the speaker has inertia, which often makes its vibration unable to keep up with the speed. The changing electrical signal, the resulting distortion is a transient distortion. Generally speaking, the so-called transient distortion of the speaker is small, that is to say, the transient characteristics are good.