LS40 lacking bass on PS4

If you notice that the LS40 is lacking bass when used with the PS4, it's likely the following setting needs to be changed.

Press and hold the PS button on your controller until the quick menu pops up.  Go to "Sound/Devices."  Make sure that "Output to Headphones" is set to "Chat Audio."  This forces the PS4 to output the game audio via the optical cable so you will hear true surround sound.