wiring for strato subs

[Beatin' 10+ year member]

i just got my strato d2 15's and each coil has two wires, one is white with a black stripe, the other is black. Which is positive and negative?

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[i2ain2thunder 10+ year member]

typically black is negative.....um the coils should show though, usually on the bottom of the spring loaded tabs, or on the board that holds the voice coil connection there are + - signs. I'm not sure on the strato, but u should be able to figure it out.