toddno, the weakest link in any PA system is ALWAYS the microphone. You could probably get a much better sound with a better wireless mic. Samson is on the bottom rung of the pro audio equipment ladder (though they are higher than Behringer, but most don't consider them to even be on the ladder).
You can add a channel strip processor like the Presonus Eureka, which has an input for a mic or line level source, and includes 3 band parametric EQ, and compressor. Here's what you do: connect your mic as normal. Instead of running an XLR cable from your wireless receiver to the console or stage snake, run it into the Eureka (or other channel strip processor), and then run another XLR cable from the output of the Eureka into your stage snake to get the signal back to the sound console.
Compression is a wonderful thing, but you need to know your system, and the console, and use it sparingly.
You can add a channel strip processor like the Presonus Eureka, which has an input for a mic or line level source, and includes 3 band parametric EQ, and compressor. Here's what you do: connect your mic as normal. Instead of running an XLR cable from your wireless receiver to the console or stage snake, run it into the Eureka (or other channel strip processor), and then run another XLR cable from the output of the Eureka into your stage snake to get the signal back to the sound console.
A side note about compression. A lot of it depends on the console and the amount of head room the console has. I mixed the McDades last Friday. My first time working on the Yamaha PM5D (in a room with a Meyer M1D array in which I had mixed before). This board had so much head room that even though I had compression on most channels, they were not hitting the compressor on any of them. BUT, the violin desperately needed it. I had to crank the compression threshold down to -25db (I normally don't like to take the threshold below -10db) in order to keep the violin from bitting your head off.
Compression is a wonderful thing, but you need to know your system, and the console, and use it sparingly.