Just wondering if anyone has any ideas, sometimes my subs will work but majority of the time (almost always) I get nothing, the amp is always getting power, fuses are good, as far as I can tell theres no wiring problems. The only thing I have changed recently was my deck but it was happening before that. I have 2 10's in my trunk but I only use one at the moment so i tried the other one as well and on both channels same thing happens. Occasionally they will work and both work and sound great, then the next time I get in my car their not working again.
Thinking the amp might just be toast but im willing to try anything.
I had this problem and it turned out to be a unsecure ground wire, also, check your stereo wires from your amp to your subs they might need to be replaced.
<img src="http://registry.gmenthusiast.com/images/edp/personal_pic.jpg" height= 200>
triple check all the wiring and grounds