Well i brought out the trusty old radio shack spl meter to do some testing on my 1803. I played a song with bass beats in the 30hz region, and the meter was hitting about 118dB, or corrected at about 120dB!!! And this was with *only* 250 watts of power. This thing is truely a monster. I cant wait until I get a PA amplifier capable of over 1kW. That will be fun to watch the walls move! Also, I am able to get the driver to excur about 1.5 inches with only 250 watts of power. The output at this level is obviously distorted, but can I actually harm the driver by doing this? And, when playing at higher volumes, when higher frequencies are played, the subwoofer sounds REALLY bad. Does this have to do with the high inductance VC? Thanks.