Sub and Amp questions

[Sijray21]

You won't get that full 400w with a 4ohm sub...it will be more like 200.

even if i run the DVCs in parallel? if i bridge the amp and wire the dual voice coils in parallel it should be showing the amp 2 ohms since bridging the amp essencially shows the half the impedence from the coils. if i misunderstood something please explain - i'm just looking for a good setup as well.

also this crutchfield link:

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