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<blockquote data-quote="stones" data-source="post: 1004611" data-attributes="member: 540734">1- yes, one coil could go bad before the other but this usually still drives the amp into protect mode (cuts out), it could technically still work though depending on the severity of the damage to the coil.2-If each subwoofer has only a single positive and negative terminal to connect the speaker wire to then its a single voice coil.3-A leaky box will not give the acoustic suspention the woofer needs (air pillow) allowing the subs to &quot;max out&quot; at low volumes, when your Concept sub maxes out the voice coil will slam against the bottom of the magnet and cause a rattling noise (each tap being the coil hitting the magnet a single time) doing this for long periods of time will damage the subwoofer.Making sure the box is well sealed for proper operation and setting the gain sensitivity on your your amp to a lower setting will cut back the power a bit to stop this, also lowering you xover point will help, I reccomend a setting of 80hz.</blockquote>

[QUOTE="stones, post: 1004611, member: 540734"] 1- yes, one coil could go bad before the other but this usually still drives the amp into protect mode (cuts out), it could technically still work though depending on the severity of the damage to the coil. 2-If each subwoofer has only a single positive and negative terminal to connect the speaker wire to then its a single voice coil. 3-A leaky box will not give the acoustic suspention the woofer needs (air pillow) allowing the subs to "max out" at low volumes, when your Concept sub maxes out the voice coil will slam against the bottom of the magnet and cause a rattling noise (each tap being the coil hitting the magnet a single time) doing this for long periods of time will damage the subwoofer. Making sure the box is well sealed for proper operation and setting the gain sensitivity on your your amp to a lower setting will cut back the power a bit to stop this, also lowering you xover point will help, I reccomend a setting of 80hz. [/QUOTE]

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