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Car Audio Equipment
Subwoofers
Signs of a blown sub
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<blockquote data-quote="Boomin_tahoe" data-source="post: 8379426" data-attributes="member: 562180"><p>Never seen a burnt speaker wire before....</p><p></p><p>But glad the problem was easily solved....and cost free</p><p></p><p>Troubleshooting can be a ***** sometimes.</p><p></p><p>Oh yes...for those that may not know, easiest way to test/check to see if a sub/speaker is blown is with a battery. Like the one in your flashlight. Doesn't have to be big or small. Take that battery and either 1 or 2 pieces of speaker wire and take one end of the wire and put it in one of the pos or neg terminals. Do the same with the other speaker wire. Now take the battery and the little "bump" on one end of the battery will be + (positive). Take the pos end of the spkr wire and put it on the battery. Same with the neg side, You won't get hurt if you do this. This should move the sub upwards just a little. If it moves downward, revers the wires and try again. For DVC subs, 1 of the coils must have a speaker wire hooked up (+ and -) and do the same with the other coil. Same results.</p><p></p><p>Another thing you can do is press firmly on the cone with your hand gently, downward. At times you can hear a "scratching sound" if the speaker/sub was blown.</p></blockquote><p></p>
[QUOTE="Boomin_tahoe, post: 8379426, member: 562180"] Never seen a burnt speaker wire before.... But glad the problem was easily solved....and cost free Troubleshooting can be a ***** sometimes. Oh yes...for those that may not know, easiest way to test/check to see if a sub/speaker is blown is with a battery. Like the one in your flashlight. Doesn't have to be big or small. Take that battery and either 1 or 2 pieces of speaker wire and take one end of the wire and put it in one of the pos or neg terminals. Do the same with the other speaker wire. Now take the battery and the little "bump" on one end of the battery will be + (positive). Take the pos end of the spkr wire and put it on the battery. Same with the neg side, You won't get hurt if you do this. This should move the sub upwards just a little. If it moves downward, revers the wires and try again. For DVC subs, 1 of the coils must have a speaker wire hooked up (+ and -) and do the same with the other coil. Same results. Another thing you can do is press firmly on the cone with your hand gently, downward. At times you can hear a "scratching sound" if the speaker/sub was blown. [/QUOTE]
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Signs of a blown sub
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