Subhoofer -- Free Dynamic Sub and Bass Enhancement Plugin

[locrian]

Subhoofer is a dynamic sub and bass enhancement plugin designed to serve as a compact alternative to other subharmonic generators.

https://www.audiopluginsforfree.com/subhoofer/

[Fleer]

Subhoofer?

Sub-hoofer ??

[Starship Krupa]

That sounds like a sailor who entertains their submarine crewmates by tap dancing.