You have a possible dual 4ohm woofer then. In this case you need to pull the woofers from their enclosures and wire the coils in series.
like this-
Note how the negative lead is run to the positve on the other coil. This causes the impedance of the sub to double to 8ohms.
Now connect one sub to channel A and the other to channel B then set all you're settings for each channel identical to the other.
This is the same as using two sperate amps to power two seperate subs, you bridge each amp to each sub.
In this configuration you will get 150 watts RMS to each sub, not a huge amount but enough to make them boom and more then they are getting right now..
He's too slow I'm going for another smoke..You want one one too amedeuce?. //content.invisioncic.com/y282845/emoticons/up2something.gif.dd110ecf3ae4b76050d87598f2f8de7c.gif
Yes bridge each pair of channels to power each sub, if the subs are DVC 4ohm and are wired for a 2ohm mono load you're amp will cut out because it is not 2ohm stable when bridged, in this case you need to remove the subwoofers and rewire the coils as I showed in the diagram above.