Article by hi joiney
In Speaker System work during fire situations sometimes occur. This often causes the user’s panic, they are usually quickly identified as poor quality speakers, bring a lot of trouble to the Contractors. Are, therefore, have a correct understanding of this phenomenon is necessary, but also help prevent the occurrence of fire. Fire is generally subwoofer speaker unit speaker cone fire or internal fire, ignited further speakers of other parts of the fire, two fire cases, there may further cause other fires, we start to analyze the causes of the fire speaker. First subwoofer unit due to fire. Speaker unit to catch fire is because the quality of their own very, very good. This argument, usually Party will not agree. To this end, we have to analyze the specific causes. As the speaker unit itself from the speaker voice coil input-ended after several Road Electric Connection, although the coil winding itself is a line from start to finish, there’s no interface, but the whole process of voice coil line drawn always possible somewhere in the middle will have some uneven. So, usually current throughout the coil wire in different parts of the current strength of the density of different voice coil with the pinout of the connection point will likely result in poor contact and contact with Resistance Increase, the result of all these factors when added to the speaker continued excessive power over the speakers rated to withstand the power when the speaker unit in a weak electrical loop collapse. That speaker burning, electrical loop open, the bass part will stop working. This is a normal situation, it is accidental, will appear in a speaker on, there would have been part of no weak links, the various parts of the electrical connection is very strong loop (because the speaker quality from beginning to end done very well), when added to the speaker’s power continued too large, more than when the speaker’s rated power to bear, should be blown at the time did not blow, but this time the voice coil has a very high temperature, typically up to several hundred degrees Celsius , and now some voice coil frame material itself can withstand very high temperatures, no deformation of coil (voice coil voice coil skeleton deformation will collide with the magnetic coil caused damage to burn). Result of this situation persists, continuous high temperature voice coil to cone baking a (cone can not afford a few Baidu High temperature), which is the reason speaker unit on fire. Imagine, if electrical loop to open early blows, voice coil does not heat up also, and no opportunity to bake a cone; and very strong overload can rapidly destroy the speaker’s voice coil and the unit Divider Usually not caused by fire, as they may be too late to have blown a hot case; the tweeter’s diaphragm is normally not combustible, it is generally tweeter will not fire. Are, therefore, subwoofer unit on fire, we do not make a fuss, need patience to explain to the owner. Followed by a divider overheating internal speaker ignited the fire caused by other materials. In fact, this is because the divider their quality is very good. This antecedent is the speaker unit (also includes tweeter Circle) electrical connection open, not to be identified, continue to pump it a result of high-power signals; divider inside the L / C ( Inductance / Capacitance ) Crossover network is the speaker must be connected to the load to form a “filter network” features, can the whole band of audio signals according to different audio segment assigned to the corresponding speaker unit on the distribution of signals play a role, if speaker unit burning, electrical connection open. In other words, crossover network has been no speaker load, this time it will become a sub-frequency electrical network is called “notch network series,” the circuit, then Amplifier Output connected to a link up from the inductor and capacitor network consisting of a notch, it is in the audio frequency signal appears on a very low impedance, approximate short circuit, but not really short, it may not trigger the amp short-circuit protection action, if the amplifier is not to overload protection, sustained strong current sent to divider inside the inductor coil can cause fever, if the inductor coil winding and sufficiently thick (that is, the quality of its own good), a short time not been blown, then have the opportunity to ignite the material around it. Course, if the inductor or capacitor fragile, has long been a strong current of a completely destroyed, then no chance crossover fever ignited speaker.
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I am an expert from China Products, usually analyzes all kind of industries situation, such as authentic burberry scarf , coco chanel handbag.
