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<blockquote data-quote="jlaine" data-source="post: 20095" data-attributes="member: 542392">This is rather interesting. I&#039;d like to know how a magnetic propulsion forward of two different values would cause a voice coil (which is locked in place by not only the spider, but the surround) to skew, cause a force shift, and grind against the pole piece (can&#039;t assume the coil, there is typically too much airgap.)Sorry- but your commentary is incorrect. If needs be, I will grab a brahma and power it with two different power sources of different levels to prove that this commentary is incorrect. The scraping of the juggernaut you heard after he blew it is from the windings of the coil being loose after burning up and likely scraping against the top plate of the subwoofer, the likely failure of the other subs is from the individual exceeding the power rating of a single coil- hence installer/user error. This was not a fault of using unmatched signal sources. You can wire two amps with one out of phase with a DVC sub and not cause ANY damage if you keep the coil within it&#039;s thermal limitations. That is all it boils down to, is thermal limitations of the coil, and in some rare cases, manufacturer defect.</blockquote>

[QUOTE="jlaine, post: 20095, member: 542392"] This is rather interesting. I'd like to know how a magnetic propulsion forward of two different values would cause a voice coil (which is locked in place by not only the spider, but the surround) to skew, cause a force shift, and grind against the pole piece (can't assume the coil, there is typically too much airgap.) Sorry- but your commentary is incorrect. If needs be, I will grab a brahma and power it with two different power sources of different levels to prove that this commentary is incorrect. The scraping of the juggernaut you heard after he blew it is from the windings of the coil being loose after burning up and likely scraping against the top plate of the subwoofer, the likely failure of the other subs is from the individual exceeding the power rating of a single coil- hence installer/user error. This was not a fault of using unmatched signal sources. You can wire two amps with one out of phase with a DVC sub and not cause ANY damage if you keep the coil within it's thermal limitations. That is all it boils down to, is thermal limitations of the coil, and in some rare cases, manufacturer defect. [/QUOTE]

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