01-12-2008, 03:26 AM
On a whim, I picked up a wireless (lavalier) mic from DAK for $50. Bottom line, it works just fine. Around 50W of "RMS" amp power will meet your needs with a fairly efficient speaker, i.e. one with a sensitivity rating of 92dB/W/m or better. I say this as a professional loudspeaker designer and former commercial sound guy. You can way over-buy on power and quality for simple voice reproduction, where you are re-enforcing the voice rather than replacing it....