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  "blown speakers"
When a speaker "blows" what actually happens. I suppose its different between a tweeter and woofer, but is there some mechanical damage or is it electrical. does something break? Besides a woofer cone ripping, what happens to a tweeter if it is still working, but raspy or staticy? I have heard "blown" speakers before, or ones that didnt work at all, but I really dont know what it is that breaks and whether it is fixable or just replace.
Manitunc  (System | Threads | Answers | This Thread)

04-01-12
  Responses (1-21 of 21)
Click title to read one, or click date to read all below it.

04-01-12   Generally caused by a amp being pushed into distorted clippi ...   Hotmailjbc

04-02-12   When the vioce coil inside the speaker gets forced beyond it ...   Elizabeth

04-02-12   Is there a way to test the speaker to see if there is a prob ...   Manitunc

04-02-12   I would play it but not sooooo loud. you might have been cl ...   Dancer

04-02-12   This stuff happens dude!!   Ebm

04-02-12   Hi all ! sounds like a rubbing voice coil .if you are handy ...   Bradluke0

04-02-12   If you can move the driver over to the other speaker; pay at ...   Rleff

04-02-12   Yes to your last question. drivers can be rebuilt.   Hotmailjbc

04-02-12   If the speaker seems 'ok' after overdriving them, yeah they ...   Elizabeth

04-02-12: Timlub
Tough question, alot of partial answers here. There are different ways a speaker can be blown. It is possible for a speaker to run out of excursion limits (travel), when this happens, you normally would hear a popping sound before it is too severly damaged. That popping is the voice coil former bottoming out against the magnet, then the voice coil is damaged from slapping against the magnet or the cone rips from too much travel as you stated in your question. The most typical problem has been somewhat addressed above by others. Amplifiers are driven to clipping, the voice coils heat up and either come apart or get so hot that they may partially melt and seize the cone. If a cone seizes its obvious, it is frozen (won't move). If the coil has partially come off the former, that is where you will hear a rubbing or garbled sound. As Elizabeth stated, you can put your fingers on both sides of the center of the cone and push evenly, if the coil has shifted, you will hear or feel a rub. If the tweeter is blown, most designs have replaceable diaphrams, its kinda like a recone on a mid or woofer. Reputable woofers and mids have recone kits available. It is very important to get the correct kit, the weight of the cone and stiffness of the surround and other things must all match for the performance to be the same of the original driver. Lastly, it is possible for a component to be bad in the crossover, typically a burnt resistor or a electrolytic cap can burst. So when you say, "what actually happens" it is a very broad question. I have given you a very broad answer, but one that I hope makes sense. Good Luck, Tim
Timlub  (Reviews | Threads | Answers | This Thread)


04-03-12   Timlub, i suspect, after further investigation, that it is a ...   Manitunc

04-03-12   I would have to agree it maybe a crossover failure as well;a ...   Rleff

04-03-12   What is your set up? speakers & amp.   Dancer

04-03-12   Is it rasping or is there no sound at all from the woofers? ...   Loftarasa

04-03-12   Manitunc, at this point, you need to remove 1 of the dead w ...   Timlub

04-04-12   The crossover is not viewable or easily accessible. i will b ...   Manitunc

04-04-12   What speakers do you have?   Rleff

04-04-12   You could take a driver out 1 at a time and using a dvm meas ...   Rleff

04-05-12   Took it to the dealer to figure out. i'll update when i hear ...   Manitunc

04-05-12   Ok, got the verdict today. the crossover was broken in two a ...   Manitunc

04-05-12   Manitunc, don't rule out the shipper dropping the package a ...   Markpao


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