12'' Clarion DVC problems?

The other day I got in the car and I noticed that the bass wasn't as loud as before. So later I opened the trunk to have a look at my subs while they were playing. I noticed that the left sub was producing a larger excursion than the right sub, the right sub was definetly getting a signal and working. These are 2 12" Clarion DVCs (4ohm/voice coil). I am running them with a Clarion Pro Audio 1000w class D(dpx1000.2). I have them hooked up stereo and the vc hooked up in parallel to produce a 2ohm load per channel(500wmax each side).
It is super cold here so I didnt want to do to much troubleshooting.
Could it be that one of my voice coils has crapped out therefore leaving me with a 4 ohm load and supplying that side with less power?????Can the sub still work with one voice coil??
What do you guys think is going on. The change was sudden on a system that was bulletproof.

Sounds like you may be right, yu have lost a VC on one sub.  While it is not a good idea to run a DVC sub with only one VC, the worse that can happen is you will blow that one, too.

Damn weather, froze a voice coil again eh. lol. Send the sub in for warranty if it is still covered, otherwise use until it's abused, then replace. Electricity will take the path of least resistance, in this case it was this particular voice coil. It may have been a manufacturer defect that with a little use has gone to an open circuit, or it may have just melted, but I would guess that it is open. Double check the gains on your amp and make sure they are not turned up too high, this usually causes alot of grief for a lot of people when it comes to subwoofers. You need to be carful now that you don't crank up the volume to help try and compensate for the lack of bass as compared to before, this will lead you down to the store for two new subs instead of one. 

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Top Secret, I can tell you but then my wife will kill me.

take the sub out and make shure the connections are still tight, and swap around the wires, connect the left sub to the right out put on your and and vise versa, , just to be shure its not your amp.

I am glad to hear that it is probably the sub and not the amp. I will definetly check that the wires didn't simply fall off. I do want to swap sides to make sure but like I said it is a bit chilly right now to be screwing around in my trunk.

Actually I wish it were both subs that were screwed, so I can get new subs(you all know where I am coming from)

Thanks for the help

If you have a multimeter you can check th resistence of the subs. if your subs are in the same air space(box) only one may be working and looks like they are both working. Do this with the system off. You wont get exactly 2 ohm because you are just measuring the dc resistence of the coils but it will tell you whats up with the subs, if a coils is blown or both coils are blown  or maybe disconected.

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Steve@A.E.S

To late, I yanked out the sub today and its on its way to Clarion. I hear they are good and fast with warranty issues.
Thanks