[Remembering] Speakers in audio systems or broadcast systems often burn or break. Usually, people intuitively think that it is too loud for a horn to stand. Therefore, the horn is damaged. Actually, there are many kinds of situations. , For example, the following situations and reasons are believed to help you to maintain horn longevity by decades.
Speakers in audio or broadcasting systems often have burned or broken sound. Most people intuitively think that it is too loud for a horn to withstand. Therefore, the horn is broken. Actually, there are many kinds of situations. Examples are possible. For the following reasons and reasons, I believe it can help you maintain your horn and live for decades.
We often use the microphone to speak or sing because the microphone is too close to the speaker or facing the speaker, and the loud sound is generated at high volume to generate high-frequency feedback. In this case, your trumpet tweeter may not work. This is because most of the signal after the high-pitched crossover is sent out from the high-pitched tone. This kind of high-energy signal burns the horn through a very fine pitched tweeter, so when you use your microphone, remember it. The volume is gradually increased from maximum to maximum, so don't open it in a big breath, lest the horn only emit low-frequency sound like a cow's voice.
1, too loud to open will of course shatter the horn, the other case is that the amplifier power is not enough hard to open loud, the output is not normal cutting signal, this situation will also damage the horn. It is recommended that users who like to enjoy large volumes should purchase high-power amplifiers. A low-power 30W rear stage may burn a low-impedance loudspeaker.
2. If the amplifier has a DC output, it will burn the woofer and even a few tweeters will burn. The reason for this is that there is no capacitor isolated DC in the bass (or other sound path) horn split path. The DC-DC output is like direct current into the horn, and even the splitter coils are burnt together. Therefore, when purchasing an amplifier, you must pay attention to using an electric meter to measure whether the output of the front stage and the rear stage has a direct current output. If the front stage has a direct current output, it is possible to pass the direct current to the horn via a post-stage amplified output.
3. If you are installing it yourself, your hand must know that high-frequency oscillation is a problem. If you are also installing it yourself, you must pay attention to high-frequency oscillation. It is better to check whether there is oscillation in the front and rear stages with an oscilloscope. Or DC output, in case you do not find this condition, it may burn your high-end speakers enough for you to buy several 20MHz oscilloscopes.
After the vacuum tube of the output transformer (or for broadcast) does not have a DC output (if it is scary), but the vacuum tube machine is popular again, and it is necessary to pay special attention to the vacuum tube machine is relatively easy to have high-frequency oscillation or interference, the above The situation is the most common cause of the horn, providing you with a reference for routine maintenance.
Equipment re-match, yin and yang to reconcile
I have always stressed that the importance of equipment matching is far better than the quality of individual equipment. If the cheaper equipment is properly matched, its performance will definitely outperform the bad high-priced equipment. The principle of equipment collocation is to find a balance point, like a seesaw, to find the balance point in the middle. Based on this reason, if the masculine personality of the equipment we find a feminine match, let its personality sounds very smooth. If we feel that the timbre is too bright, we will find a warm match; if it is too slow, we will equip it with fast speed. In short, the harmony of the yin and yang, the hardness and softness, and the balance of sound are the major principles.
The power source is clean, quiet and transparent, and is located in the jungle of an urban apartment. Our home is full of various kinds of electronic interference pollution. Whether it came from the power line (motor rotation, fluorescent light flashes), the air (radio frequency interference, electromagnetic interference) let us can not escape. In order to reduce these interferences, we try to keep the electrical circuit of the refrigerator, air conditioner, dehumidifier, washing machine, etc. with the motor not to be in the loop with the sound. It's certainly better if you can pull a dedicated power supply. Indoors, if not possible without fluorescent lamps, dimmers can also generate noise. In addition, there are small props that sell anti-electromagnetic and radio frequency interference in the market, and there are various power filters and processors that can be used.
How to distinguish their own power clean? It's simple, the cleaner the power, the clearer, quieter, and clearer the sound, and the better the sense of hierarchy. However, we must pay special attention to the fact that in the past, many people treated their voices more and more thinly. In the end, only clear and dry midrange, thin midrange, and insufficient rich bass were left. This was wrong. The correct voice should be treble water and sweet, full full midrange, low volume and flexible enough.
The joints are wiped cleanly and the thread ends must be locked. The so-called connector is the connector for signal input and output. After being used for a long time, these joints are inevitably eroded by air and produce a layer of oxide on the surface. If there is a layer of oxide on the male connector and the male connector, is it useful for the signal cable you are buying for a lot of money? What to use to clean the connector? There are many kinds of small items on the market that can be cleared. You have to ask at the sound shop.
If the joint is very oxidized, you can also go to the automotive material line to buy things like the clean aluminum 99, these friction cleaners are very powerful, will wear off the surface of the joints a thin layer, to ensure clean and smooth. However, special attention should be paid, do not use this detergent to wipe the panel or gold-plated knob, it will make them without the gold-plated gloss.
After you clean the surface of the joint, you can buy a wipe that contains a slight amount of oil. Rubbing the surface of the joints with this wipe will keep them free for about one month.
Again, what does it mean to tighten the thread? The end of the thread refers to the head of the speaker. If the head of the speaker is not locked, the resulting impedance change may have a negative effect on the low frequency. In my experience, it is best not to use the terminal, the bare wire is directly locked on the end, so that the best contact surface will be obtained. If you must use the terminal, try to use thin and soft copper Y-type plug, this type of terminal can be locked tightly. The thicker and harder the terminal is, the worse the contact effect is. If you can clear the output input terminal, if the speaker cable is locked, it will be as if the body's blood channel meridians are not obstructed and the sound will be better.
The sofa buys the leather, sit well and is durable. Whether you are buying a single seat or double, triple or even a full set of sofas, I suggest you buy a leather sofa. why? Perhaps everyone has a different view of whether to sit or not. However, leather sofas and cloth sofas and wooden chairs do make the sound better, especially at low frequencies.
why? I didn't test it scientifically, but I think the leather sofa is a good sound damping body. It can absorb moderately (volume, weight and hardness) and reflection (dermis surface) sound waves to make the sound better. In addition, if the leather sofa is properly maintained, it will not be a problem for five years. Moreover, the current import of leather sofas in Italy is not too expensive, not to mention there are many Taiwan imitation products.
Thin plate nails can not be hurt, hurt the sound, the general family, in order to beautify the ceiling, or false wall false columns, wood nails plywood, or even the entire wall in order to look beautiful, but also first nail plywood and then paste wallpaper. Unfortunately, splints have a fairly strong absorption of medium and low frequencies. Therefore, if there are many splints, the mid-range and mid-low frequencies will become thin. Everyone knows that if the mid-frequency is thin, it is like people's liver is not good. It is a very serious problem. In terms of sound effects, splints must be hurt and hurt.
If your ceiling must be beautified, then I suggest that you do a small piece of arc plate to beautify. Or, make a separate strip of sound arcs. Even a quadratic residue diffuser can be installed on the ceiling. These measures are positive for the sound. Please note that if you have a lot of space, you can selectively do this on the ceiling of the listening area. If you are within five pings, a few arcs are already covered with ceilings. Some people may suspect that the curved plate is not made of thin plates. Yes, it is bent into thin plates, but it is very strong. Moreover, there is no closed cavity inside, so the sound absorption characteristics are far less than the normal pendulum diffusion furniture, diffuse absorption of natural to the general people in the layout of a sound room, the first thing that comes to mind is to be neat and clean. There are no general cabinets and other furniture in the room. As everyone knows, in this way, because there are few things to absorb sound in the room, it will cause too many echoes, long reverberations, and multiple standing waves in low frequencies. In a space like this, the beauty is beautiful, but the voice must be empty, noisy, and not long-lasting.
My suggestion is that in a sound space, it is better to have a general home environment with tables, chairs, cabinets, etc. Naturally, these furniture will absorb, reflect, and diffuse sound. If you are lucky, it will be nice to hear without any effort. With bad luck, let's do some special devices and adjustments to make the sound louder.
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