I was wondering how it would be to box up the prometheus to get an extended LF from the speaker. How would it affect the openness in the sound, and would you need any extra x-over components? I would think you have to give away some of the good sound, but still. Would it be possible with a fair result?
There are similar speakers doing this:
http://www.6moons.com/audioreviews/zu/druid.html
http://www.hammerdynamics.com/
bjorn