From: "Dave Brownell"
Subject: Re: PA (Public Address) Systems
X-Newsreader: Microsoft Outlook Express 6.00.2800.1123
Date: Sun, 08 Dec 2002 09:13:38 GMT
NNTP-Posting-Date: Sun, 08 Dec 2002 02:13:38 MST
Organization: Shaw Residential Internet
"George Shaw" wrote in message
> Question: Are there any good resources to find out how PA systems are
> designed and how they work?
> I need a source to provide basic information such as speakers, why
> 100V, impedance explained, amplifiers, transformers and line drivers.
> As well as the more advanced topics of acoustics and environment
> Web sites, books and sources or explanations would be of value.
> Any calculations and formula would be of value.
> Any ideas of suggestions as to how a simple PA system comprising of a
> microphone, amplifier, 16 ceiling mount speakers and a two wire cable
> system could be specified and designed for optimum audio in an office
> environment would be a good example. Block diagrams or
There are many sources for this information, search the web for 70 volt
systems. Yamaha has a series of books on audio reinforcment. I can't
remember the titles, they featured simple clear explainations and lot of
useful information. "Audio Systems Design and Installation" by Phillip
Giddings published by Focal Press goes into great detail on every aspect of