I have found on youtube.com a perfect compilation for subwoofer testing.
There are six guys saying that this is six different songs:
Beat Dominator – Bass…. Can U Hear Me?
vai
Beat Dominator – Feel the Bass
vai
Bass Mekanik – can you hear me
vai
DJ magic mike – feel the bass 3
vai
Beat Dominator – Beat the bass, Can you hear me?
vai
Dj Magic Mike – bigbass woofer test.
that sound is good