Waves has a plugin, MaxxBass which is meant for adding/raising harmonics to create the illusion of audible lower bass tones than the system is actually producin

Waves has a plugin, MaxxBass which is meant for adding/raising harmonics to create the illusion of audible lower bass tones than the system is actually producing. It gets used pretty commonly in electronic music nowadays but was originally made for more mundane applications like audio mixed for television or theme park speakers.