Luis,
The answer to your question is very simple: you live close to the portuguese Bose distributor. It's located in the "Zona Industrial da Maia", and ABC is the name of the company. They have an elegant room with a nice sample of Bose products. Among them, the PAS. They will welcome you, and your musicians, for an extensive audition. That's what I did with my Tyros. I came back one week later to purchase it.

Give them a call. Don't forget to bring a mixer, cables and mic(s) with you.
I had two other outdoor jobs this weekend, and I fully confirm Donny's observations. The PAS covers an impressive area; I had people dancing to the sound of my music 70/80 meters away from the spot in which I was playing. My public finds it hard to believe that that "small thing" is making all that sound. At least part of the explanation for these sound projection properties - the cylindrical sound waves versus spherical sound waves - has been given in another thread by Paul C. :
http://www.synthzone.com/ubbs/Forum37/HTML/011300.html -- José.
[This message has been edited by Route 66 (edited 08-16-2005).]