Ok, so basically, I'm trying to think about how i'm gonna set up the pa system my band is going to be buying, we're gonna have 2 15" yamaha clubv mains which run at 8 ohms. now i think i read somewhere that if you chain 2 speakers together, if they were originally at 8 ohms, they would then run at 4 ohms each? is this true. also, how exactly do you bridge a power amp, and if the power amp is bridged, is it ok to chain the speakers together? I know that was a little lengthy, but it'd really help me make some final decisons i need to make such as cabling and what power amp i wanna buy. i already have a yamaha mg16/4 mixer.