I was of cheap scrap (4 purchases) very disappointed (among other things, of Logi ....).
That's why I bought with some skepticism the Hercules XPS 2.0 30 speakers.
I now have a good month and I am thrilled !!!
Super Bass not the Ultra Low Frequency - field, but for music enjoyment Powerful simply awesome (even techno and trance fit).
Most impress me the ups give these things on its own, crystal clear and never encouraged to distort.
With the TONE controllers, you can still turn the handle right (aside) sound.
Processing ... well, I'd say so for this size there powerful bass, only if you overdo it can sometimes resonate all the trappings. Tip: foam works wonders.
Small drawback:
The bass reflex ports are (unfortunately) back.
Here goes much deeper tone back lost.
Solution: The boxes just make something closer to the wall and you get beautiful reflections.
Conclusion:
I am pleased and will give not so soon these speakers.
Update 06.04.2013:
I have the parts still, are now well established CORRECT, even so they are louder than the big brother (Hercules XPS 2.0 60).
I never had better and hope that they still hold forever;)