Uh- all good suggestions, but before you do anything else, check to see that the woofers are in phase.
That is to say, if the red connection on the back of the amp is connected to the plus terminal of the speaker, that such is also the case with the other channel. This way both speakers are pushing and pulling in unison. Otherwise they are fighting each other, and you would have some pretty 'blah' bass!
That is to say, if the red connection on the back of the amp is connected to the plus terminal of the speaker, that such is also the case with the other channel. This way both speakers are pushing and pulling in unison. Otherwise they are fighting each other, and you would have some pretty 'blah' bass!