Question about Volfenhag ZX-4712 Car Subwoofer
Use a 9volt battery, touch both wires to the battery connections, if the speaker jumps upward and away from the magnet, the wire on the positive (+) terminal of the nine volt is positive (Red), if the speaker jumps inward towards the magnet, then the wire on the positive (+) terminal of the nine volt is negative (Black). CAUTION: only TAP the wires to the nine volt terminals briefly, if you hold them on there it may damage the speakers voice coils, (or other parts.) best of luck!
Posted on Oct 25, 2008
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