How to judge the quality of the speaker, how to see the quality of the mobile phone speaker

1. Multimeter.

Hit "Ohm."

file, the two watch pens are connected to the two leads of the horn respectively. If the measured resistance value is equal to zero or very small, it means that there is a short circuit inside the coil of the horn; If the measured resistance value hits infinity.

The location indicates that the horn is disconnected.

2. Test the measurement with 1 ohm gear, and the sound in the horn is good, and the sound without sound or no resistance value is bad. The horn resistance is small, generally a few ohms, which can be ignored. If there is a sound in the point measurement horn, but it is not a one-time sound, it is not qualified.

How to quickly judge the quality of a speaker? The guy taught you that you can do it without a multimeter.

If you can see the binding post, then find a dry battery, and then use two wires, one to connect the positive pole of the battery, one to the negative pole of the battery, and then use these two wires to touch the two binding posts of the horn at the other two ends, at this time I hear the sound of "card, card" in the speaker, indicating that the horn is good, silent, and the horn is bad.

Turning to the M setting, the TV speaker is generally at 6 12 ohms.

Pick up the horn, shout a few times, and buy it when you think it's good.

Listen to the effect, listen to the sound to see if there is a smashing sound.

Hello dear<>

The answer you are looking for: The way to see the sound of the phone speaker is as follows; 1 Enter the mobile phone settings, click My Stool Service 2 to enter the interface, click on self-service detection 3 to enter the interface and click on the speaker to detect whether it is normal. other methods; 1. The mobile phone speaker is broken, we can remove it, and then hold a test, if the branch and disadvantage are really a hardware problem, you can buy a model of the same model and put it in; 2. The wire problem of the speaker of the mobile phone, this may be poor contact or broken, burned, etc., it is the same, remove it for a while, and then have a target; 3. If there is no problem with the speaker of the mobile phone, then we can use the breaking method to check all the remaining and loud hardware, such as the power amplifier, to see if there is a problem.

Below we specialize in the production of horn manufacturers to tell you how to judge the quality of a speaker:

1. The material of the woofer drum paper, the softness and hardness of the bounce wave, and the number of coil turns of the voice coil. It can be said that any change in any link will affect the curve of the horn. There is nothing good or bad about the same horn, only the style of the horn, you get what you pay for.

2. Use the computer to measure the frequency response curve of the horn to know the performance of the horn.

3. The number of layers and caliber of the magnet and voice coil determine the power of the speaker.

How can you tell the difference between good and bad horns?

The more powerful the speaker, the better. Power:The simple point of this indicator is,Feel how powerful the sound emitted by the speaker is。

Usually in order to cater to the psychology of consumers,Usually the first power is marked very large,But the power of the speaker is not as big as possible,The application is the best,For ordinary family users20 square meters of room,50W power in the real sense is enough,There is no need to pursue high power excessively。

Signal-to-noise,Ratio is the most critical indicator for any audio equipment,Signal-to-noise ratio refers to the ratio of the maximum undistorted signal to the noise signal,The unit is dB,The signal-to-noise ratio of a general qualified speaker should reach 90db,If the signal-to-noise ratio of a system cannot reach 75db,Then this system is basically unaudible。

Sensitivity refers to the sound pressure level measured at a distance of one meter from the vertical central axis of the loudspeaker plane when a 1W 1kHz signal is input to the speaker input.

Sensitivity,The unit is decibels (db),The sensitivity of the speaker is 3db difference,The output sound pressure is doubled,The sensitivity of ordinary speakers is in the range of 85 90db,Below 85db is low sensitivity,Above 90db is high sensitivity。

Well, having said so much, I don't know if you have learned, so I will summarize the important points of the quality of a speaker: the quality of a speaker depends on the curve, parameters, structural collocation, material selection, and listening.

How to judge the quality of the speaker? If you can see the binding post, then find a dry battery, and then use two wires, one to connect the positive pole of the battery, one to the negative pole of the battery, and then use these two wires to touch the two binding posts of the horn at the other two ends, at this time I hear the sound of "card, card" in the speaker, indicating that the horn is good, silent, and the horn is bad.

Judging whether the quality of a speaker is good or bad, first of all, we must look at his amplification effect, if the sound quality after he expands your voice is not damaged, there is no tearing sound, then it means that the quality of the speaker is still okay.

The first step in listening is to check the volume of the current sound, that is, only connect the speaker to the power supply, and then turn the volume to the maximum, since there is no audio input at this time, the quieter the sound heard, the better; When testing the sound quality, it is recommended to adjust the volume to about 2 3. Different sound quality of the test speaker should be selected from different test audio sources. If the test source is of high quality, CD is generally selected, among which the bass can be tested cello music, the alto can be used for the alto, the treble can be used for violin music, and the dynamic test can choose some dance music with a strong sense of rhythm.

Try not to use the audio source recommended by the manufacturer during the test, and use the audio source prepared by yourself.