Crossovers Crossovers separate frequencies and sends their signals to the proper speakers. In other words, bass frequencies are sent to the subwoofers, midrange and high frequencies to the other speakers, etc. Full range speakers produce all frequencies and don’t need crossovers. Few people need subwoofers, delays or crossovers in small buildings and small PA Systems. (…more)

 
Input

Input devices put audio signals into your sound system. One common method of inputting audio signals into a system is using equipment such as microphones, instruments, and various types of audio equipment. Quality microphones are expensive but they give you the best vocal tone quality, and less feedback (squeal)  from the speakers.Get the best Mic you can (…more)

 

An amplifier increases the power of a signal, and is the last device in the signal chain before the final destination – the Speakers. There has to be an amplifier somewhere, to make the signal strong enough for the speaker to produce sound. There are 3 ways to go about this, in a PA/ Sound (…more)