There are three basic types or groups of microphones that include dynamic, condenser and ribbon. Using a variety of these microphones can eliminate many problems. One microphone may give you a lot of feedback even if you use the “eliminator” which can give you poor frequency in response because it is being eliminated as feedback.

You have set up a beautiful rolling stage that has a retractable caster assembly so that it can be rolled across a flat floor while it is completely assembled. The stage consists of a support structure and three 4′x8′ SC90 Platforms, creating an 8′x12′ area. Multiple rolling stages can bridge SC90 Platforms to create a larger performance area with a stage guardrail for safety and with the risers in place you are almost ready to go.

Now you need to set up your microphones and sound system. Dynamic microphones are the most common and basic type of microphones. They will be good for the lead performer because they are a rugged microphone. There are also similar to a speaker and tend to have a limited frequency response.

The most popular over the years has become the condenser microphones because they have a wide frequency. There are more delicate than dynamic microphones however. They do require an internal battery or an external power source that can be provided by the mixer.

Ribbon microphones have an excellent frequency tone and tend to be delicate as well as expensive. They are rarely used in the basic P.A. systems.

You should also consider the pattern of your microphone, which is the direction that the microphone picks up sound from. Polar patterns are divided into two types, Omni and unidirectional. The Omni accept sound from all directions and often from the direction you do not want sound to be picked up from, this is usually called feedback. The unidirectional microphones are the most common by about 95%. It is very important to know the pattern of the microphone you are using as well as its susceptibility to feedback.

You also need to consider the sensitivity or hearing level of your microphone. The more sensitive it is, the more it is likely to pick up additional sounds. It all depends on the stage volume as to the sensitivity you need.

I am only going to touch on impedance (sound measurement) of a microphone because it gets into a lot of technical data. You need to determine whether you need high impedance or low impedance. It all depends on what type of mixer that you have. However, professional microphones are usually low impedance.

You can easily enhance your performance and sound field from the stage by choosing the proper microphone for your performance. If you have good sound then you will have a great performance and isn’t that what it is all about?

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