JL Audio 12W6v2-D4 - Voice Coil / Power ?

I was wondering one thing. from what i understand, a change in impedance makes a change in power.

The JL Audio 12W6v2-D4 is a Dual Voice Coil, 4-ohm woofer that is rated at 400w RMS.

Does the wattage change when i wire the woofer for a 2ohm and 8ohm load? If so, how do i determine the power? Thanks

i appreciate your response but i thought the question would be basic.

this is my current setup.

Pioneer PRS-X720

Bridgeable, 2 x 100W 4 ohms or 2 x 200W 2 ohms or 1 x 400w Bridged 4 ohms.

Alpine SWR-1241D Type-R

Dual Voice Coil, 300w RMS, 4 Ohms

i am only using one alpine sub.  Now i have the alpine wired in parallel to a 2 ohm load.  i learned the hard way by forgetting it was DVC and i connected it to the amp bridged.  So now i have it on one channel.

now, i just purchased the following...

Alpine MRP-M450 - Class D Mono Amplifier

220 watts RMS x 1 at 4 ohms (400 watts RMS x 1 at 2 ohms)

i was just wondering about the specs for the speaker. i was assuming by them saying "300w RMS, 4ohm subwoofer", it stated 150w per voice coil @ 4ohms for a combined of 300w. so i was wondering if there was a change in the combined power rating when the voice coils are wired in series to 8ohms or parallel to 2ohms?

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