Ah, trasducers...
I used to use Bass Shakers in my old home theater (see http://www.partsexpress.com/webpage.cfm?&DID=7&WebPage_ID=222 and look for The Starlight Theater), and they are pretty darn cool.
For an amp, you could check out partsexpress.com and get a kit.
For my Bass Shakers, I was able to use an old Pioneer pro logic reciever (100 watts per channel) and just hooked the Bass Shakers in to the front speaker channels. I fed the receiver the sub out (split with a Y-spliter with one connection going to my powered sub) line from my main receiver. Worked great. Had MORE than enough power. I can't image using 200 watts per channel on tranducers. The basic Bass Shakers at 25 watt max (each) was WAY, WAY, WAY more than enough.
Good luck. The Clark units are supposed to be very good.
