The speakers in the sound system or the broadcasting system often have burnt or broken sounds. Generally, people intuitively think that it is too loud to sound the speakers, and the speakers will be damaged. In fact, there are many kinds of situations, respectively. For example, the following circumstances and reasons, I believe can help you maintain the life of the speaker. We often use a microphone to speak or sing because the microphone is too close to the speaker or facing the speaker, and the loud volume produces a high-frequency positive feedback, and your tweeter may not work. This is because most of the signals from the high-pitched sounds are sent from the high-pitched sounds. This high-energy signal burns the horns through the fine treble. So often when you use the microphone, remember The volume is slowly increased from the top to the bottom, so don't open it at all, lest the speaker only emit a low frequency like a cow. 1. If you open too loudly, it will vibrate the horn. In another case, the power of the expansion machine is not enough to open and loud, and the output is an abnormal cutting signal. This situation will also damage the horn. It is recommended that users who prefer high volume should purchase high-power amplifiers. The low-power 30W stage is likely to burn low-impedance speakers. 2, if the amplifier has DC output, it will burn the woofer, and even a very small number of tweeters will burn. The reason is that there is no capacitor isolated DC on the bass (or other sound path) speaker. The DC output is like direct current into the speaker, and the splitter coil is burnt together. Therefore, when purchasing an amplifier, pay attention to it. First, use the meter to measure whether the output of the front and rear stages has DC output. If the front stage has DC output, it is possible to pass the DC to the speaker through the rear stage and then amplify the output. 3. If you are self-installed, you must know the high-frequency oscillation. If you are also installing it yourself, please pay attention to the high-frequency oscillation. It is best to check whether the front and rear stages have oscillations with an oscilloscope. Or DC output, in case you have not found this situation, then you may burn your advanced speakers enough to buy several 20MHz oscilloscopes. The vacuum tube with the output transformer (or for broadcast) will not have DC output (if it is scary), but the vacuum tube machine is popular again. It is necessary to pay special attention to the vacuum tube machine which is more likely to have high frequency oscillation or interference. The situation is the most common cause of the horn, providing you with a reference for routine maintenance.
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