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256H woofer polarity

euraquiloeuraquilo Posts: 4

I have an MRX515 cabinet that was altered with the wrong woofer. I have a 256H woofer (the correct one for this cab) to install but for the life of me I cannot tell the polarity of the terminals (see pic). How do I determine which is the positive and which is the negative? I searched for specs for this speaker but found nothing.

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