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Hi I'm a newb at this I have resently bought a sundown x10 two of them and a saz1500d I have a upgrade alternator started big 3 have a good battery alpine 7" touch screen 4 4x6 two 6.5 2 8" and 6 1" tweets on a 4 channel clarion 400 watt my question is what kind of box and size should I use the box and port r where I'm at really want this to b tuned low any help please