Thanks for the advice Ian.
I just have a couple more quick questions....
(1) What are the differences from the last generation of subwoofers to the EP series (e.g. power, compostion, etc.)?
(2) Why the change from the triangular design?
(3) If I could find one of the older designs what would be the equivalent model number to the EP175 and would it perform similarly.

Thanks for all your assistance.

Daryl :-)