QUOTE (wahaca @ Dec 11 2006, 10:35 AM)

Or you could buy
this one for 25K
<snipped image>
Sorry, gotta go off topic for a mo'.
From their site: "This is the first home audio woofer delivering true response to DC."
That has to be the most inane thing I've ever read about an "audio" product. DC voltage/current does not produce a sound, unless you count the thump when you turn an amp on. Even then, good amps don't produce a thump, because their DC output is low or non-existant, or at least have a relay in line with the output to protect your loudspeakers from damage caused by DC. Audio devices are AC devices, all DC power input to a loudspeaker will do is heat the voice coil unnecessarily.
More from their site: "If you want to hear and feel the 4-5 hertz fundamental frequency from a helicopter rotor, the low frequency rumble of wind, the space of a concert hall or infrasonic information contained in an explosion, this is the only woofer technology available."
Sorry, I don't believe that for a moment, one of the Aura Bass Shakers from parts express would work just fine, I bet, because you
cannot hear that low of a frequency, but you can feel it.
"Over the years the generally accepted low frequency limit of hearing has been 20Hz, some suggesting 16Hz. However nothing existed to produce significant enough output to change this belief."
They've obviously never been to a hall/church with a really good pipe organ.
OK, back to topic. I'm considering the PartsExpress sub, too, post back and let us know if it works out for you, greymalkin