The centre of the car speaker is were the voice coil is located. This contains an small or large copper coil depending on the size of the car speaker. The purpose behind attaching an dust cap onto the middle part of any speaker or subwoofer is to prevent dust and dirt getting in. Dust particles can make there way into the car speaker mechanical parts and blow the voice coil. It is very easy for an voice coil to get misaligned, if this is the case, then this can cause poor speaker performance and strange noises to be heard such as rattling or scraping. Often kids when they see an car speaker, they gain pleasure from pushing in an car speaker dust cap, thinking they are in an arcade centre. Although this doesn't affect the performance of the car speaker, unless its actually torn and letting potential dust in, it can not be so pleasant to look at.
There are many different ways to fix an car speaker that has been pushed in. The best effective method without damaging the car speaker is to use an hoover. Ensure you place the hoover on the lowest setting possible, so it doesn't damage the plastic or paper that it is made out from. Use the nozzle to suck out the car speaker dust cap, use you initiative to carry out the repair. You can also try using PVC insulation tape stick it directly onto the dented area of the dust cap. Once you have done this, slowly peel back the tape, the dust cap will depress itself.
I hope this guide has helped you repair your broken car speaker.
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