here's another option
Well within the price range and if your friend likes the maple color these speakers are absolutely gorgeous.
Nice speaker but the impedance is 4 ohm. The 5.25 mid-bass might be pushing it for a solid low end in a room that size.
Thanks for the recommendation.
BTW anyone heard the Usher 6 series speakers? They look like an option...
a few comments. you really need subs and/or speakers rated down to a true 20hz to get *real* low end in a room that size that is open to other rooms, imo. the only speakers (w/o subs) i know of in your price range, new or used, that can fit the bill are a used pair of thiel 3.5's. but, forget driving them w/that panny receiver - these speakers need mondo hi-current amplification to drive them.
that being said, the onix recommendation is one i would second - that 4 ohm load shouldn't be a problem at all for these speakers w/the 100wpc-rated panny amp, as the onix's are 90db/1w-efficient. and, being rated at -3db at 35hz is about as good as yure gonna get for speakers in yer price-range that can be driven by that panny receiver, imo. those two 5.25' drivers will be fine doing it.
along the same lines as the onix, i would also consider the odyssey nightengales - really cool looking, & klaus' products have a good reputation.
http://www.odysseyaudio.com/loudspeakers.html
re: usher audio speakers, considering what's been said about 'em, & considering my experience w/my ridiculously cheap s520 monitors, these would also seem an exxcellent choice.
doug s.