Hello, all. I need to replace the speaker wire on my combo amp; the current one causes the signal to cut in and out if you move the wire at all. Can you give me some pointers on soldering a new wire to the speaker? I've never soldered before. I purchased a soldering iron, desoldering tool, rosin-based solder, and rosib-based flux. Anything I need to watch out for? Also, I'm a little confused about the flux. The radio shack guy assured me that it's an important ingredient in the soldering process--I should coat the part I'm soldering onto with the flux. I'm a little confused by this, because I'd never heard of flux before and didn't realize you needed anything other than the solder for the joint. Any help you all can provide would be much appreciated.