"1 Megaton" Bass

Finally that has happened! Long awaited purchase of a subwoofer for my current PA (Public Address) sound reinforcement is finally done! Meet the Meat:

The Box TA18, 18" Active Bandpass Subwoofer, 500W RMS, frequency range 35Hz-250Hz, stereo XLR input, 131 dB SPL Max (1m). Dimensions: 693 x 530 x 580mm. Weight: 45kg

One observation so far is that - Bass truly makes the difference. It's not about obvious fact of how much more powerful it sounds (and it is! glass on a table was jumping in the room)... It's just that music sounds a lot different, you hear the true atmosphere of what it's supposed to represent and transmit to you as a listener. Take hip-hop, for instance, it's obvious that the bass is one of the cores, but what does it mean for that music? My subjective point of view on this: it adds value of overfilling sound, that you cannot possibly shout over, so it immerses you on a trip into the music, rather than just casual listening, while browsing. Music with intense bass becomes the only Power of Nature that you feel, it dominates over anything. And that makes the difference!
PS my Neighbours Must Die