Question by Amy D: What are the components of a sound system in a retail or restaurant environment?
I’ve worked in security and camera sales for quite a while, but I’ve recently started working for a company that also does home entertainment and sound systems. I understand what the over-all system is for and the brands and all of that. But could someone give me a quick run down of the components for a commercial system and their purpose. I have an appointment w/ a restaurant owner today and I’m knowledgeable in everything he wants, but the sound system. He wants to be able to broadcast ball games in his restaurant (I’m guessing he will need XM for that) and hook up the same system to his MP3 player when there is no game on. I know the difference b/t a woofer and a tweeter, but I keep reading words like Amplifier, Receiver, etc. What role do they play? I just need a quick breakdown of the terminology, please 
Best answer:
Answer by Daniel K
A typical commercial sound system consists of a mixer/amp and speakers. They are sometimes called 70 volt amps and speakers in the USA.
The ipod or XM radio will plug into the inputs on the amp and the output goes to speakers that are wired from the amp to the first speaker and then to the next. Pretty easy systems to install and troubleshoot. Not that different from a home theater amp – you gots your inputs and you gots your outputs.
Here is a link that explains more:
http://www.yorkville.com/downloads/other/70vsystems.pdf
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