How to reduce the impedance of an 8 ohm micro speaker?

The horn coil is wound inside the horn, impedance.

Unable to reduce; In circuits with resistance, inductance, and capacitance, the impedance that acts as a hindrance to the current in the circuit is called. Impedance is commonly represented by z, which is a complex number, which is actually called resistance, and imaginary is called reactance, where the capacitance is applied to the alternating current in the circuit.

The obstructive effect played by the inductor is called capacitive reactance, the obstructive effect of the inductor on the alternating current in the circuit is called the inductive reactance, and the obstructive effect of the capacitance and inductance on the alternating current in the circuit is collectively called the reactance. The unit of impedance is ohms.

The concept of impedance exists not only in electrical circuits, but also in mechanical vibration systems.

The impedance of the horn cannot be changed unless the voice coil is replaced, or an impedance transformer is installed. There is also a method of connecting two speakers of the same size in series: for example, two 4 ohm speakers in series are 8 ohms, and two 4 ohms are connected in parallel for 2 ohms.

If you want to reduce the impedance, you can merge another horn, and if you want to increase the impedance, you can string a horn. In the same configuration and at the same volume, the sound with a loud speaker impedance is a little smaller, and the sound with a small impedance is a little bigger. But under normal circumstances, the impedance of the horn should not exceed the matching range of the amplifier.

Some power amplifiers are fixed impedance output must be matched according to the specified impedance, but the power amplification used in the home is suitable for a wide range, in principle, as long as the impedance is matched, the signal obtained is the strongest, and the sound is the largest.

The impedance of the horn can be easily changed with the line transformer, and the type of impedance transformer can be selected according to the power impedance requirements of the horn.

Summary. Five 8 ohms are five speakers or speakers with an impedance of 8 ohms. This impedance value is usually a standard value for loudness (sound volume) matching, so multiple 8 ohm speakers can be connected in parallel to the same amplifier output.

In this case, the total impedance will be ohms, so the amplifier power must be carefully selected to avoid damage to the amplifier or horn.

Five 8 ohms are five speakers or speakers with an impedance of 8 ohms. This impedance value is usually a standard trouser value that matches the loudness (volume of sound), so multiple 8 ohm speakers can be connected in parallel to the same amplifier output. In this case, the total pure flame resistance will be in ohms, so the amplifier power must be carefully selected to avoid damage to the amplifier or horn.

Horn impedance refers to the impedance characteristics of a horn, usually expressed in ohms ( ). Impedance is a parameter in an AC circuit that describes how much resistance hinders AC electricity. For horns, impedance refers to the magnitude of the impedance to the AC bridge brigade (i.e., the audio signal), which is usually divided into several types.

When selecting speakers or speakers, it is necessary to match the corresponding speaker impedance according to the output impedance and power of the amplifier to obtain the best sound quality performance and power transmission in the world.

Parallel connection with series. Cannot be converted to 8, the closest is. As shown in Fig. And the power distribution obtained by the individual speakers is not bad before the balance, and the size is up to 9 times. Therefore, Yun Lihui does not recommend using this method.

It is recommended to use a transformer for impedance conversion. The side answer is that the four horns are connected in parallel to 4, and the transformer with a transformation ratio of 2 can be converted to 8.

In the case that the amplifier coin code is not far from the Naina speaker (within 50 meters): the amplifier with an output impedance of 16 ohms should be connected to the speaker with an impedance of 16 ohms, and the 4 speakers of 16 ohms are only mixed, that is, 2 speakers are connected in parallel, and then 2 Changma speakers are connected in parallel, and then connected in series.

The power of your amplifier is low, so you must not turn on the sound to the maximum when using it.

Impedance refers to the ratio of voltage and current of the input signal of the car speaker, and its unit is ohm ( ) In layman's terms, the impedance is the resistance of the car speaker to the current, and the impedance is not equal to the resistance, but includes resistance and reactance, that is, including resistance and inductance, and the inductive and capacitive reactance produced by the capacitor, which is the sum of the three in the vector.

At the same voltage, the higher the impedance, the smaller the current, and the lower the impedance, the greater the current. Under the condition that the power amplifier and the output power are the same, the low-impedance car speaker can obtain a large output power, but if the impedance is too low, it will cause underdamping and bass degradation. In general, the lower the impedance of a car speaker, the harder it is to push.

The impedance is not a constant value, but constantly fluctuates with the frequency of **, which may be as high as a dozen ohms or twenty ohms at a certain frequency, or as low as one ohm or less at a certain frequency, and is generally used as its nominal value as the lowest impedance value between the resonance peaks at its resonant frequency. Currently, the impedance of most car speakers is between 2 and 8 ohms. The preferred value of speaker impedance stipulated in China's national standard is (the recommended value of the international standard is 8).

When purchasing car speakers, we must also pay attention to the impedance matching with the car power amplifier, that is, its impedance should be within the load impedance range of the car power amplifier, only in this way can the car power amplifier work safely and provide the most ideal power output.

The two impedances of 8 ohms of the small fiber horn in parallel and then connected to the power amplifier, at this time the external impedance of the power amplifier is 4 ohms, the internal impedance of the power amplifier itself is 4 ohms, at this time the power consumption of the power amplifier is 32W, of which 18W is used to push the horn, 18W is consumed in its own internal resistance, that is to say, its efficiency is only 50%, this working state is the power matching state that we usually destroy, only in this state can the horn get the maximum power that the power amplifier can output.

All in all, when choosing the amplifier and speaker, it is necessary to ensure: 1. The impedance of the speaker is equal to the impedance of the amplifier, at least not less than the impedance of the amplifier, otherwise the amplifier will be burned; 2. The power of the speaker is equal to the power of the power amplifier, at least not less than the output power of the power amplifier, otherwise the speaker will be burned.

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