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Subwoofer Fault Type

Edit:Guangzhou Langyuan Audio Equipment Co.Ltd   Date:Aug 31, 2017

Subwoofer Fault type

Speaker system is an important part of audio equipment, usually by the speaker, frequency divider, box, sound-absorbing materials and other components. Speaker system failure rate is low, less fault type, common faults have the following four categories. silent

1. The speaker is broken or the divider is abnormal. After the speaker wiring is broken, the speaker unit has no excitation voltage, it will cause a silent fault. Divider is generally not easy to break, but there may be lead wire desoldering, frequency capacitor short circuit and other failures.

2. Voice off. Can be used multimeter R × 1 file measurement speaker lead wire, if the resistance is ∞, the knife can be used at both ends of the voice coil at both ends of the lead paint scraping off, exposed bare copper and then measured, if still unreasonable, Broken wire; if the measurement has been through and "Khaki" sound, then the voice coil lead wire break, the thread can be a good solder, and then another section with the voice coil winding welding line can be welded.

3. The speaker leads are broken. As the speaker cone vibrates frequently, the braid is easy to break, and sometimes the wire is broken, but the cotton core remains connected. This braid is not easy to buy, can be replaced with a slightly longer soft wire.

4. Voice coil burned. Use the multimeter R × 1 file to measure the speaker lead, if the resistance is close to 0Ω, and no "Khaki" sound, then the voice coil burned. Replace the voice coil before, you should first remove the magnetic gap within the debris, and then carefully put the new voice coil into the magnetic gap, righting the voice coil, while listening to the edge with a strong glue fixed voice coil up and down position, Position, with a strong glue to the voice coil and cone gap filled to about half, and finally sealed dust cover, the speaker up the cone, place a day after the normal use.

Sound sometimes absent

1. Poor speaker lead. Usually the voice coil lead to broken or poor welding caused by the cone vibration, the breakpoint sometimes connected, sometimes broken, the formation of irregular when the ring does not ring failure.

2. The voice coil is broken or short.

3. The power amplifier output socket is bad or the speaker input line is broken.