[mikegett]

If the amp powers up then a fuse, ground, or power wire will be out of the question. It is possible that rca's are the problem, but I doubt it. You have two inputs. If one is bad or connected improperly, the other channel will still input. I would check the connection between the amp and sub. It may be possible that the amp terminals broke at the solder weld during the move. If you didn't remove the sub from the box, I would ignore this. The other problem could be how you have the wires coming from the amp. I will suppose that it is in bridge configuration. If so, check to ensure that the correct left and right channel is being used. Some amps will turn the other two off when placed in mono. The other possibility would be a blown output. Since mono mode uses one ground and one possitive from seperate channels, a blown channel will result in no output. Try wiring the sub off of each channel individualy. This will tell you if there is a problem.