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<blockquote data-quote="Deiimos" data-source="post: 8834901" data-attributes="member: 682903">Yeah those subs have some odd jumper card you change for parallel or series wiring. That&#039;s what that thin gray thing is above the screws. Looks like he has each sub set to parallel, which should be 2-ohm per sub, so his approximate 1.7-ohm sounds like they are wired correctly, at least the subs themselves anyway.Smoke / sizzling coming from the subwoofers, whatever happened, likely overheated the voice coil. That doesn&#039;t mean they are dead, but likely the coating on the coils, and or the glue sustained damage.A bad amplifier will do this, if it is sending DC to the subs. Why it happened in your case no idea. Accidentally connecting the power to the amp is also not good.But yeah, I agree, at this point, everything needs disconnected and tested individually with some caution. Use a DMM to check for DC on the speaker terminals of each amp with no input but powered on, no subs connected. A bad amp sending DC to the speakers is a quick way to fry voice coils.</blockquote>

[QUOTE="Deiimos, post: 8834901, member: 682903"] Yeah those subs have some odd jumper card you change for parallel or series wiring. That's what that thin gray thing is above the screws. Looks like he has each sub set to parallel, which should be 2-ohm per sub, so his approximate 1.7-ohm sounds like they are wired correctly, at least the subs themselves anyway. Smoke / sizzling coming from the subwoofers, whatever happened, likely overheated the voice coil. That doesn't mean they are dead, but likely the coating on the coils, and or the glue sustained damage. A bad amplifier will do this, if it is sending DC to the subs. Why it happened in your case no idea. Accidentally connecting the power to the amp is also not good. But yeah, I agree, at this point, everything needs disconnected and tested individually with some caution. Use a DMM to check for DC on the speaker terminals of each amp with no input but powered on, no subs connected. A bad amp sending DC to the speakers is a quick way to fry voice coils. [/QUOTE]

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