Too lazy to edit the size, but http://www.wildwoodrugby.com/251.jpg
will give you an idea, although 150 watts lighter. Marbles review on HD was spot on though, clarity, detail, ease...I love turning my 250 as loud as I can handle them and wondering when my landlord will complain. My girlfriend is probably a little miffed that I often tell her "music time" and crank the tunes.
You can probably just expand the size a bit and get an idea of what Marbles is enjoying, the basic design is probably more or less the same, and that's quality!