A lot of people are thinking, how long does the life of sound box have after all? Everybody of this problem cares more, the author thinks here uses sound box normally 15 years is jue to do not have a problem, if you together with the good time that maintains can be longer, some sound box is used less than a few years to go bad, is this why? So pull to maintain the respect, the author is taking the knowledge that everybody dissects sound box to maintain below.
Sound box basically has speaker unit, frequency divider, box body, inverted phase hole, terminal post, wire to wait for composition, from the Angle that maintain, before 3 is main, after 3 is secondary.
1, horn unit
The main structure of the loudspeaker unit is composed of a strangled ring, sound basin, core branch, magnetic circuit (including magnets, T iron, voice coil), basin frame, etc., and the influence of the life of the speaker in addition to the voice coil is burned out by abnormal use, mainly is the strangled ring and sound basin. Choke ring: choke ring material life order for cloth edge, plastic composite edge, silicone rubber edge, foam edge and so on. More easily damaged is the foam edge (such as JBL has a LX series speaker box), because of the use of the foam edge of the speaker unit, in the normal use of 3-5 years on the broken almost scrapped, I helped friends repair N such speakers, without exception, are very damaged by the foam fold ring. Of course, the foam edge material composition and production process is different, its life will not be the same. Secondly, the number of silicone rubber edge, the original domestic "File" bass like to use this ring, its shortcomings are mainly if the process is improper, for a long time, easy to aging and inert deformation and moire, and affect the use of. Silicone rubber and plastic-plastic choke rings are widely used in loudspeaker manufacturers today.
And make the loudspeaker monomer life greatly extended choke ring, is the cloth edge choke ring, most of it is used in professional loudspeaker, but also useful in civil products, such as Nanjing production of 12 inch woofer YD315-8B is the cloth edge choke ring.
2, basin
Basin frame currently has two kinds of materials, namely thin iron sheet stamping basin frame and aluminum basin frame, of course, there are other materials, such as nylon plastic basin frame (opu 802 and xi ya H545) is to use this kind of basin frame. Imported and domestic GAO horn unit is mostly used in aluminum basin frame, its strength GAO and seismic performance is superior, much better than ordinary stamping iron basin frame. But small caliber units don't matter. There are centering bracket (yellow plate) are through the special process of production of linen products, as long as not degummed, there is nothing to say.
3, basin
Basin in the speaker unit to use, to take a variety of material form: its preventing Dan cloth, fiber weaving basin, basin, mica polypropylene PP, aluminum and magnesium alloys basin issues such as small, mainly paper or paper matrix composite basin, because of the existence of protein fiber in the southern humid region almost inevitably be mould erosion, namely our common mildew and white spot and headache. This kind of sound basin by the performance of soft tone, honest and favored by loudspeaker factories. Such as the United States "JBL", Denmark "Wafa", Norway "Siyas" have produced a large number of paper based or paper based composite sound basin speaker unit, so how to maintain the problem, especially the maintenance of the GAO block speaker is much attention of enthusiasts.
4, magnets
Magnet almost no maintenance, but when long there will be a little loss of magnetic phenomenon, but the overall performance is not a big impact, at most, the sensitivity is a little decreased, only very little, antimagnetic horn is much better than ordinary antimagnetic situation.