Low Frequency Hum for Sub. What did I do Wrong?

[pappy72]

So first off thanks for all the previous post to get me this far. The only sound out of the subs is a low constant hum. This is my setup. 8 gauge power wire off the battery. Ground attached to the LATCH anchor bolt under the rear seat. Remote wire tied into the Blue/white wire located near rear speaker. RCA input tied to Brown/White wire to the positive , and Brown/Blue wire to the negative. Any ideas on where I went wrong.

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