Wanna replace Bose sub speaker in 04 X sedan
 

Hey guys. Is there a good replacement plug and play sub for the Bose in the back/trunk ?

wanna see if I can get better bass without rewiring and all that.

There's no good sub that works on that little amount of power. At the very least, you've got to run a new power wire, then tap the audio signal wires going to the sub.