I had these speakers for a little over a year and what can I say Logitech really put in work with this speaker system, you seriously can't be disappointed with them, their very loud,and bass is solid and powerful. I use them everyday listening to my music, watching movies, and playing games. It's THX Certified, you can't expect it to be nothing but excellent! 

Question: Is the bass sound the deepest ?
Answer: bass is solid and powerful