Just bought a 2016 Equus and the bass is very weak sounding. Its the 10 speaker system. Whats odd is on some songs it does the really low bass, but the range of bass is very limited. Is this a problem with mine? Or is this just the way the 10 speaker setup is? If this is normal do you have any recommendations to correct the issue? I'd rather not rip apart the rear power seats to replace speakers. I was thinking of adding a sub in the trunk but I don't know how well the sound will come through the back seats.