Alright, so I'm completely new to mixers and PA systems and all of this equipment. I need to get a PA system to run a mic through so we can have vocals at group practice sessions. I was going to get a Behringer UB802 http://pro-audio.musiciansfriend.com/product/Behringer-EURORACK-UB802-Mixer?sku=631238 and a Kustom KPC10 http://pro-audio.musiciansfriend.com/product/Kustom-KPC10-10-PA-Speaker-Cabinet?sku=600814 because I'm intensely on a budget and that's all I can afford. I was looking at it, and I realized they both say they are unpowered. It seems like the the KPC10 isn't powered itself, and it doesn't seem that the UB802 would power it either. I'm really confused about how to work this stuff, and I'm wondering, would I need a powered mixer to run the KPC10? And if I need a powered mixer to run speakers like that, would the UB802 only be used with speakers that are powered?