The speakers in the audio or broadcasting system often have burnt or broken sounds. Generally, people intuitively think that it is too loud to turn the speakers, and the speakers will be damaged. In fact, there are many situations, such as the following. The situation, I believe can help you maintain the horns longevity for decades.
When we often use a microphone to speak or sing, the microphone will be too close to the speaker or facing the speaker, and the loud volume will generate 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 small to large, and you don't have to open it at all, so that the speaker only emits a low frequency like a cow.
Volume control and power matching
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.
The influence of direct current
If the amplifier has a 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.
Avoid high frequency oscillations
3. If you are personally equipped, 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 use an oscilloscope to check whether the front and rear stages are oscillating or DC output, in case you have not found this situation, then maybe 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.
Equipment re-matching yin and yang to blend
It has been emphasized that the importance of the matching of equipment is far better than the quality of the individual equipment itself. If the cheap equipment is properly matched, its performance will outweigh the poorly equipped high-priced equipment. The principle of equipment matching is to find a balance point, just like the seesaw, find the balance point in the middle. For this reason, if the masculine equipment we are looking for a feminine match, let its personality sound very smooth. If we think that the equipment is too bright, we will find the warmth to match; if the speed is too slow, we will match it with the speed. In short, yin and yang reconciliation, rigid and soft, and finding a balanced voice is a big principle.
The power supply is clean, quiet and transparent, and it is in the jungle of the urban apartment. Our home is full of various electronic interference pollution. No matter from the power line (motor rotation, fluorescent light flashing), the air (radio frequency interference, electromagnetic interference) is not able to escape. In order to reduce these disturbances, we try our best to make electrical circuits with motors such as refrigerators, air conditioners, dehumidifiers, and washing machines not to be connected with the audio circuit. If you can pull the dedicated power supply, of course, it is better. If you can use the fluorescent lamp in the room, try not to use it. The dimmer will also generate noise. In addition, there are some props for anti-electromagnetic and radio frequency interference on the market, as well as various power filters and processors.
The suggestion is that it is best to have a sound space in general with the general home environment, such as tables, chairs, cabinets, etc. These furniture will naturally absorb, reflect and spread the sound. If you are lucky, the sound will be very good without any effort. Luck is not good, let's do some equipment and adjustments that make the sound sound good.
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