ELEPHANT worked for me. Wife went crazy over the trunk.

"Capt. Scumbalino" wrote:

Capt.Mooron wrote:
Oh Yeah Mr Fancy Pants Speaker Guru.... yet you couldn't tell me
where to get a system capable of generating sub audible sound waves
to drive my neighbour to early admission to the looney bin!!

You could try a few of these...

http://www.mtxaudio.com/caraudio/pro...jackHammer.cfm

I'm sure they'll go lower than 20Hz if you set them up right.

--
Capt Scumbalino