Dave Lampson <[log in to unmask]> in a fascinating posting about new
audio technology writes of one of these rigs with which he has experience:

>The performance is very good, as is the sound, but the surround sound
>engineering is nearly ideal.

To get the benefit of this, how large a space is required? Is special
preparation of surfaces needed? About how much would a modest, but
efficacious system cost?

Denis Fodor