sub vibration

Just hooked up two tens in sealed boxes with appropriate amp/sub match but when they hit they have an empty vibration. I do not think it is the subs or box after trouble shooting. The amp is a fosgate 551s. Could the amp be bad or could the signal coming from my eclipse 8441 be off? I am worried that I messed up either the amp or deck because while hooking up the box the speaker wires from the amp touch and sparked a little bit. I know it should have been powered off, but its too late now. Any suggestions welcome

Thanks

Got a feeling you're looking for the Car Audio Forums. They are a little further south on the main menu..