Just turn on the speaker. Simply turn the radio to FM. Turn the channel to a channel that cannot receive radio programs, so that it will make a rustling sound. These rustling sounds are also closer to the full frequency, so that The speaker's high, middle and low frequencies can all be in state. Place the speakers so that the two speakers face each other, not face to face. There needs to be a short space between the speakers. It is not recommended to cook continuously, but to do it in N times. It is recommended not to exceed 3 hours each time, and the total time can be maintained at 10-40 hours.

The following is what I found online. You can also search for speaker burn-in on Baidu:

To burn-in the speaker, you must first choose a suitable music record, which can be divided into two categories. First, Stage burn-in should be done using a type of audio CD signal disc. This audio CD records Pink Noise, also known as pink noise. The main thing is that it has a wide frequency range, from the lower 20Hz to the upper 20KHz, and continuously from the highest It plays continuously at the lowest level. This type of sound disc is not difficult to find. Many audio and video stores sell similar audition CDs or burn-in CDs. For example, the 8th segment of the old XLO test disc released by Sheffield Lab can be called a classic in the burn-in sound. One of the signals contains various frequencies interleaved. Although it is quite noisy and unpleasant to play, the burn-in sound is The effect is very ideal.

The second stage of the burn-in is to use the second type of disc - a music disc with a wide bandwidth and comprehensive effects. The first stage can be said to be like a martial arts practitioner opening up "Ren" and "Tong" The purpose of the second pulse is to open up the full range, and the focus of the second phase is to create a sense of music and flavor. The selected CD tracks can consider classical music, symphony, opera, jazz, traditional folk music, pop music, etc. Speakers or headphones cannot be limited to playing a single piece of music for a long time, but must be mixed, and each kind of music is different. Try again and again.

In addition, equipment that has not been used for a long time or has been rarely used recently can be restored to its normal state as soon as possible by turning it off.