124...
I have never tried it as you describe so I couldn't give you an honest answer on that ....but I have used it in many gig situations and it has peformed admirably...it has it's limitations of course & when I need more I add some power 15's to the compact with no problems to cover the crowds..I think its 150-200 watts.

Here are some great Bose Compact demos you might enjoy...

http://www.youtube.com/watch?v=n-zHx3KfX3U
http://www.youtube.com/watch?v=8pEk1msUvC0&feature=related
http://products.bose.com/pdf/customer_service/owners/og_l1_compact.pdf