EST2032 Black Grille Universal 115DB 12V / 24V Dia 125mm Waterproof Basin-shape Car Horn Replacement
Brief details:
Voltage: 12/24V
Current:≧3.7A
Sound Level:105-115 DB
Frequency: H:430±20 L:320±20
Dia:125mm
Tips : Teach you to know the Physical parameters:
The parameters of loudspeaker refer to the specific performance parameters of the loudspeaker tested by the special loudspeaker testing system
Parameters mainly include: Z, Fo, eta 0, SPL, for Qts signs, Qms, Qes, Vas, Mms, Cms, Sd, BL, Xmax, Gap gauss. The following are the several parameters of its physical meaning.
Z: refers to the resistance, speakers include: rated impedance and dc resistance. (unit: ohm/ohm), often referred to as the rated impedance. The speaker rated impedance Z: is that the first maximum impedance curve at the back of the minimum impedance modulus value, it is fundamental to calculate the speaker electrical. Dc impedance DCR: refers to the voice coil winding under the condition of static, passing a dc signal, and the impedance of the tested values. We usually say the euro 4 or 8 the rated impedance.
Fo (the lowest resonant frequency) refers to the speaker impedance curve of the first great value corresponding to the frequency. Units: Hertz (Hz). The speaker impedance curve is under normal working conditions, measured by the method of constant current or constant pressure method of speaker impedance modulus changing with frequency curve.
Frequency 0(the efficiency of loudspeaker): refers to the ratio of the output acoustic power of loudspeaker to the input electric power.
SPL(sound pressure level): refers to the sound pressure produced by the loudspeaker at the point one meter away from the loudspeaker on the reference axis when the voltage is applied to the electric power of rated impedance 1W. Unit: dB (dB).
Qts: total quality of loudspeaker due to value.
Qms: the mechanical quality of loudspeaker depends on the value.
Qes: the electrical quality of loudspeaker depends on the value.
Vas(effective volume of loudspeaker): refers to the volume when the sound of air in a rigid container is equal to that of the speaker unit.
Mms(vibration quality): refers to the total mass of each part of the loudspeaker involved in vibration during the course of motion, including the drum paper part, sound ring, elastic wave and air quality involved in vibration, etc. Unit: gram.
Cms(force): refers to the flexibility of the supporting parts of the loudspeaker vibration system. The higher the value, the softer the whole vibration system of the loudspeaker. Unit: mm/ Newton (mm/N).
Sd(vibration area): refers to the effective vibration area of drum paper/diaphragm during the vibration of loudspeaker.
BL(magnetic force): the product of the gap magnetic induction intensity and the length of the effective voice coil. Unit :(T*M).
Xmax: linear travel of the sound coil in motion during vibration. Unit: mm.
Gap Gauss: Gap magnetic induction intensity.
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Basin - Shape Car Horn Replacement , Powerful Car Horn With Black Grille Images
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