【 Weak current College 】 speaker's life and maintenance

The life of one, the box end long, this is a lot of people are concerned, normal use you should say 15 years absolutely no problem, the maintenance of good time even more, if there's something wrong with your brother sanxian waves 907Be, as long as the maintenance of the good, the 20 years on you will never have a problem. In my home-made speakers in more than 15 years has n on, but still in normal use. But why do some speakers available to few years damaged? this with the use and maintenance of a great relationship. Here's the relevant issues involving speakers briefly:

The speakers mainly driver, divider, box, round-hole, Terminal, wire, etc., from a maintenance point of view, the first three are the main, after the three as a minor.

1. driver. Driver's main constructs of choke ring, cone loudspeaker with core branch, tablets, magnetic circuit (including magnets, T iron, voice coil), basin rack, etc, and the impact on life in addition to the voice coil is sound non-normal use burning, mainly of choke ring and cone loudspeaker with. Choke ring: the life of choke ring material order fabric, rubber and plastic composite edge, silicone rubber, foam edge .... More vulnerable to damage the foam side (e.g., JBL has the LX series speakers), as a result of the foam side of the driver, in normal use 3-5 years on fracture almost useless, I helped a friend built N only this Horn, without exception are foam-rings for damage. Of course the material composition of foam edge and making technology, their life will vary. Secondly we few silicone rubber edge, original homemade "flying music" bass like this choke ring, the main disadvantage is that if the technology properly, a long time, easy to get older and inert deformation and moire patterns, and the impact on use. Today's speaker manufacturing plant or extensive use of silicone rubber and plastic rings and choke choke ring for the majority.

The loudspeaker of life greatly extend the choke ring,is Chief of choke ring side, it is most used in professional speakers, but also useful in civil products, such as Nanjing production of 12-inch woofer YD315-8b used is rim choke ring cloth.

2, cone loudspeaker with. Cone loudspeaker with the driver in use, has taken a variety of materials: their bullet-proof fabric, woven, PP basin, MICA polypropylene basins, aluminum-magnesium alloy Bowl questions not large, mainly paper based or paper-based compound Cone, due to the presence of protein fibres, on the southern wet area was almost inevitable that we mould erosion common bad points and white and headache. This cone loudspeaker with of the sound of gentle, simple and award-winning speaker factory. Such as the United States "JBL", "us" in Denmark, Norway and the "West" are produced in large volumes of paper-based or paper-based composite cone loudspeaker with the driver, then how to maintenance issues, in particular on the maintenance of a high retaining Horn's award-winning fever frenzy.

3. basin rack: basin rack at present extensive colour has two kinds of materials, i.e., thin sheet metal stamping basin rack and aluminium basin rack, as well as other materials such as nylon plastic basin rack (op 802 and xiya H545) are based on this kind of basin rack. Imported and domestic high-end loudspeaker unit most used aluminium basin rack, its strength and superior seismic performance than ordinary punching metal basin rack. However small-calibre cell was indifferent. There are definite heart stent (yellow card) is a special process of production of hemp products, as long as degumming, Amy.

4, Magnet: magnet almost no maintenance, but when there is a long excitation phenomena, but the impact on overall performance and, at most, the sensitivity is only somewhat minimal, anti-magnetism Horn than ordinary circumstances not steering.

Second, how the maintenance of the speaker and speaker unit

1, box best selected wood manufacturing, exterior with high wear resistance, high strength of paint product is good, but compare uncommon; most are exterior with high-density system board paper or wood veneer (outside if there is no paint, fresh paint n times). A substantial and should be in a dry room, as much as possible to avoid the direct rays of the Sun, the never placed in humid places, prevent high density system board meets tide and Penghu expansion, it is in trouble. And the speaker or long-term stay alone, at least every month with 1-3 times, each time with more than one hour, or it will bring a lot of trouble, such as material of static fatigue, divider in the promise of electrolytic capacitor leakage current, light is affecting its normal work, the impact of its life.

2. driver's maintenance, (whether in the box or new acquisition's driver. ）

(1) the finished box driver carefully removed, be sure to carefully, and in the Cabinet and Horn with oily pens do a position mark, so that maintenance after reset the installation.

(2) prepare a box imported car wax (imported brand cars used) evenly to wipe down the magnetic layer 2 T iron, normally this t iron is made of galvanized iron, iron if basin rack is also such a basin rack, so that the wax is dealt with in the above, don't put it off, you can prevent N years not corrosion.

(3) driver from the audio volume to Terminal 2 of the parabola-shaped root, braided copper wire, but also be coloured wax and finger back and forth to get even, and do not put it off to prevent a long time, the black leader becomes elastic decrease and the impact of work.

(4) If a paper-based or paper-based compound cone appears bad point Leukoplakia, medical alcohol tampon, wipe from the back carefully quickly (alcohol cotton ball to screw a semi-dry, not too wet, too-permeability to Cone loudspeaker with surface). If the surface has a bad point white spot, only 40-45 °-warm water, plus a few soap shampoo with a clean soft towel moistened with water wrung wipe, mastering the moderation, do not wipe the repetitious. Never use alcohol, with volatile organic solution to wipe it.

(5) high-end loudspeaker in the pot after penetration (generally 1-3 months), and then a period of time, about half a year to a year or so, then the speaker's bass unit removed (treble not to move), rotate 180 degrees azimuth and then loaded back (first maintenance has been doneMark, this time as long as you can install it upside down position) so that the Horn in itself under the influence of gravity more balanced, while there is no need to look up wax, if need be.

(6) divider maintenance. First look at divider, a simply concatenated divider and gateway to the loudspeaker of the capacitance, high-quality frequency capacitor MKP (General capacity and pressure for 2.2-6.8uf/100-400v, depending on the crossover point of capacity is different), such as using it do not move, but in any case have to put on a high-quality frequency capacitor MKP. As France's "Suren", Germany's "native" or "United States" and other brands, MIT is assured tone reproduction, because of leakage current is small and not easily damaged loudspeaker.

Divider changing for the better after the Fede at plates back then evenly coated with a layer of wax. Or if you have any condition it is best to use quick-drying insulating varnishes can brush it again, this effect will be even better, my self-made dividers are used brush fast dry insulating varnishes, second degree, and prevents the oxidation of copper-Park rust Eng green and black.

The above is just a personal experience of maintenance, for lack of hands-on experience, it is important to note that, especially in the clearance of the import of finished speakers, in addition to removing the screws required special tools, on the actual operation requires a high level, preferably in the demolition of the two people together when it is completed. In short, the speaker if used appropriately and properly maintained, the use of 15-year or longer is no problem.