Reply to Sound system

Hey guys,
I was wondering if there is anyone on this community that is pretty comfortable with speakers/subs/amps. Honestly I am pretty novice when it comes to knowing what to buy and which setup would work/sound well together. Currently we have this set up http://www.djdeals.com/geminiXTR500.htm The bare minimum to get buy. Unfortionately the subwoofer blew on us and has this rattle sound, so its pretty useless. We are looking to upgrade to something that is loud/durable/and has good sound quality. Like I said I'm not sure what to get. The gigs we do are anywhere from 60 - 300 people. Also, I was wondering if I'd still be able to use the 2 10" loudspeakers?

Thanks for the help,


plur