Problem a: appear crackling sound will adjust the volume when the sound, big and small

Surely this should be the common user experience of the most common problems, I believe that many users will have such experience. After a period of time, when the sound volume will appear this kind of problem. Many users simplyfixed pulley speaker sound above, using the computer system the volume controlto control the sound, it is undoubtedly a matter of expediency, but did not solve the fundamental problem.

In fact, this problem can be judged is the phaser volume adjustment problems.Most speakers are using potentiometer to change the signal strength (except thedigital mixer potentiometer), thereby to adjust the volume, bass adjustment. Thepotentiometer is through a movable contact, to changes in carbon resistance film on location, so as to change the resistance value. With the growth in use of time,there will be into the dust or impurities potentiometer, potentiometer contacts may also be caused by rust, contact is not true, then to adjust the volume is will have a "crackling" noise appears.

Solution: replacement of potentiometer, spent only 2 yuan, but to do it yourself.Also can put the potentiometer behind the four pressure tabs open, revealing a movable contact potentiometer. Then, anhydrous alcohol cleaning carbon resistance film, and then in the carbon resistance film a drop of oil, and then loaded on can solve the noise problem.

Question two: sound can play, but not the timing of emergence of noise

Some users in the market to buy the kind of small speakers or that copycat brandsound is likely to have this problem, use the speakers will not time occurrence"crackling" noise, sometimes even treble harsh voice. When you put on the headphones sound good. This makes many beginners feel very strange,because we start to think of your software will not be set or your computerhardware problems. Another bad contact may be the audio line joint problems,therefore implements the plugging technology.

In fact, this is caused by the voltage instability, voltage instability may well be theirsocket problem, because the socket of the internal use of phosphor copperquality will not loosen or elastic cloth good, let the speaker power while contactfor a while and disconnect. Because in the switching moment there will beinterference signal channeling current switching in amplifying circuit, will lead to other noise, that is what you heard "crackling" sound.

Solution: a very simple solution, the socket away now, socket high-end point to buy a well-known brand, the problem is solved. Again, don't touch the problem to find the repair shop, no problem will also give you the whole problem.

Question three: there is no treble, bass

This failure is usually because the speaker volume is too large, so after use in a long time, the subwoofer to burn. This is very normal, like bass friends thinkbigger is better. Some people even put it very high, and the volume is transferred to more than 70%, so most likely to burn the bass. Typically, recommended to choose the 30%-50% volume, bass 30%-40% is enough. In addition, this situation may also be broken head.

Solution: change the thread, change the thread is a very simple thing, you calleda repair shop master at least 20-30 block, do not know their own Baidu.

Question four: open the box switch, the speaker is a "buzz" sound, and has not been stopped, the noise can not be eliminated

This problem was editor of previously encountered problems, open the power supply has been loud, and then try to toss a plugging technology, finally ended in failure, power failure No. Grade two boring when, in God, but also can be used,this happy, but still not go for what?

This situation is generally because of long time use, plus the sound box is closed,the heat dissipation is not out. So the internal t, emperature is too high, resulting inoverheating and damage to power amplifier integrated block. In fact, power amplifier integrated circuit originals with temperature protection function, when overheated, power amplifier integrated circuit will automatically stop output; and when the temperature drops, can automatically return to work. Some speakersmanufacturers in order to reduce the production cost, integrated circuitmanufacturers use is not famous, but is the use of integrated circuit small factoryfake, inferior quality.

The solution: the circuit board to buy a well-known brand of change is good, butthis is a little technical content, we can hope to challenge the.

Presumably the awareness about reasons for the above several big boxproblems and solutions to their simple practical speaker system repair themselves and friends, let "will only listen to not use and maintenance"embarrassment gone for ever, a coup attempt can be made friends sit up and take notice, you may wish to try!