Anyone who knows a little about the studio microphone should know how much care and maintenance a microphone of this level needs. Through the following article, I will share with you how to maintain and regularly maintain the microphone during daily use. .
(1) Keeping low humidity
Whether it's a moving coil, a capacitive, a ribbon, or a microphone that looks like a lean/low-cost/hard-shell microphone, it's recommended to keep a certain level of low-humidity because the microphone's vibration molds & components can't withstand the wet water strip. The impact of the long-term, high-humidity environment, the microphone's tone, circuit board will also be affected / degraded or even reimbursed.
Many people use a moisture-proof storage box with temperature and dry humidity adjustment function to collect equipment such as a microphone or a camera. However, when setting the temperature inside the moisture-proof box, don’t set too much, but forget the temperature and humidity of your indoor space. There is a big difference with the inside of the box, otherwise the equipment will be affected by the sudden changes in temperature and humidity when it is taken out of the moisture-proof box.
Therefore, in order to protect the safety of the equipment and prolong its service life, in addition to indoor space, dehumidifiers (or central air conditioners) should be used frequently to dehumidify and pay attention to changes in temperature and humidity. Before using the equipment, you can also use a plastic bag to slightly illuminate the microphone and air. Block, after standing for 5-10 minutes, slowly let the microphone vibration mode and the circuit board adapt to the external high humidity and temperature difference before taking out.
If you have the opportunity to visit a studio, from the space temperature and hygrometer and microphone collection method, the way and process of enabling the microphone, you can probably know the space of the studio, the maintenance of the equipment and the performance of the microphone. .
(2) Placement mode The recording studio actually conducts experiments on the vibration mode of a microphone, and uses the common placement method to compare the exclusive storage methods of the American merchants. What is better? Is there really a difference?
After the actual experiment, from the picture below, it is found that when we put the vibration mode of the microphone perpendicular to the plane of the placement (lower), it is obvious that the difference of the dust above the two is several times compared with the parallel arrangement (upper); Some materials have electrostatic induction, which leads to a certain tendency to adsorb dust.
Under the influence of gravitation, all matter on the earth will fall down, and the dust in the air and the microphone vibration mode are no exception. The flat-shaped microphone has a large air contact area perpendicular to the gravitational force when it is laid flat. Therefore, it is recommended to place a small piece of paper on the wall of the microphone (directly above the large-area seismic mode, the paper area is preferably the seismic mode). 6 to 9 times the area), to prevent dust from falling on or even adsorbing on the diaphragm.
Because the vibration mode is a long strip of aluminum/metal foil, the ribbon microphone is much heavier than the common condenser microphone, and is relatively affected by the gravity of the earth. If the microphone is flat for a long time, it will cause sound. The pressure-sensitive ribbon collapses away from the original central axis, causing permanent sound quality damage, deterioration of the fixed point of the ribbon-type seismic mode, embrittlement and even breakage, resulting in permanent damage.
The large ribbon styles are stored vertically, and special methods are used for humidity control. The microphones in all the microphone cabinets are also parallel to the vertical plane of gravity, so as to avoid the influence of dust on the sensitivity of the microphone model. With frequency response.
(3) It is very difficult to clean the vibration mode of the microphone regularly. Because the traditional capacitive ultra-thin plastic diaphragm is usually plated with a thin layer of gold foil, so that the capacitive Black Plate and the gold foil diaphragm can be electrically induced. , generating the signal source of the microphone. Simply using ordinary cotton swabs and toilet paper to clean the diaphragm often causes more cotton wool and dust to adhere to it. It is also impossible to remove the dirt and saliva on the microphone vibration mold; It is not the entire collapse of the diaphragm, that is, the entire piece of gold foil is scraped off, causing a permanent microphone to be scrapped or the sound is obviously degraded. Therefore, it is not recommended for inexperienced people to perform the cleaning and maintenance action. (The diaphragm of the condenser microphone is extremely fragile, and a slightly strong wind can completely eliminate the cap of a microphone. Even if the diaphragm is used to gently touch the diaphragm, it may scrape the surface. Gold foil) The following illustration shows the gold foil scraping demonstration of the American merchant pottery. We can easily create the peeling gold foil by simply touching a small corner of the mirror paper to touch a few dust particles.
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