Unless you're speaking in a small room to just a few people, you may want to consider what a public address system might do for your presentation. If you have to strain your voice to speak loudly enough so everyone can hear you, then you need a public address (PA) system. If you can speak comfortably in conversational tones and are clearly understood by all in the room, you probably don't need amplification.

Using a microphone can seem intimidating at first, but once you tried it out and grow accustomed to the amplified sound of your voice, you'll be fine. Here are a few ideas to keep in mind as you approach the microphone for the first time:

Understand the microphone type you're using. Microphones come in two basic types: wired and wireless. A wireless mike permits you to move around freely, unrestrained by cables and cords. The disadvantage is that wireless mikes are more sensitive to interference and are dependent on batteries (which may not be fresh). A wired mike is highly dependable and produces good sound quality, but you must know where the cable is so that you don't trip over it.

Understand how to use a wireless microphone. Wireless mikes come in two types: clip-on and hand-held. Clip-on mikes are small, lightweight and easy to use. For men, the best place to fasten a clipon mike is to your necktie or shirt, as high as possible, about three or four inches below your chin. For women, the advice is the same, but note that clip-on mikes are sensitive and will pick up any noises from contact with necklaces, jewelry and name badges. Clipping the mike to your jacket lapel will work, but you may experience some voice fade as you turn your head away from the side on which you're wearing the mike. Once it's in place, just switch it on when you're ready to begin and don't touch it. Clip-on mikes typically come with a wire that connects them to a small transmitter and battery pack. You can put that in your pocket or fasten it to your belt, if you like. Do whatever makes you most comfortable or creates the least distraction. Hand-held wireless 50 mikes typically have an on-off switch on the bottom that you'll need to activate when you're ready to begin your presentation.