Audio Systems: Short Circuit Protection, 4 ohms, dc resistance

Question
I am having an issue with my Xplod amp. It is model XM-2002GTR, peak power of 1200 watts. I have it hooked up to 2 12 inch Xplods, peak power of 1300 watts each, model # XS-L124P5B. I am not sure of the RMS off the top of my head. I had it hooked up and it was working fine and I decided to switch the subs to a different box, still wired in stereo and now the protection light keeps coming on. If i turn up the volume or the gains at all it comes on and the amp shuts off. It does not do it when i disconnect the wires from the speaker outputs. The manual says there is a short circuit in the speaker outputs and to rectify the problem but i am unsure where to go from here. I had the speaker wires connected but not plugged into anything for a brief time but never had the amp on during this period. Any suggestions or help would be greatly appreciated. Thank you.

Answer
Better check the wiring for shorts.  

Not sure what you did when moving the drivers over to a different box, but you should run wires the same as before. Then every thing should be as before.

Also, it is possible that a short has occurred in the connections if there is a dressing of the wire which lets a strand or bare part contact with another metal part (such as the basket or a mounting screw, etc.)

Power ratings are (peak power ratings are of no meaning) not an issue, but impedance could be.  If the impedance of the load on the amp is too low it can cause what you are experiencing. However, if you have correctly wired the drivers this should not be the problem.  Nonetheless, check it out.  

If you have a vom and know how to take resistance readings, just pull the wires off each channel at the amp and measure the dc resistance.  You should find the resistance just a little lower than the impedance rating of the speaker.  I think your speaker is a 4 ohm single voice coil and therefore the dc resistance should read a little less than 4 ohms.  Maybe something like 3.8 ohms.   If it is substantially less than that you know there is a shorted conditions somewhere.  Check wiring first, but it could also be a shorted voice coil in the driver.

If you don't have a vom you can purchase one for less than $10.00 at Walmart or Home Depot that works very well for automotive work.

Let me know if you need more assistance.

C