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Guide to voice alarm systems
The tools shown here are part of the guide to voice alarm systems

TOOLS - GUIDE TO VOICE ALARM

Our Guide to Voice Alarm Systems is full of drawings, tables, animations and other features to help the readers understand this complex subject. By popular request we’ve put two of the most popular features online for anyone to use.

The book is available worldwide on the iTunes book store or order the printed version direct from us or via Amazon:

LOUDSPEAKER CALCULATOR

TEAM PRINCIPALS

dB 1w/1m

W

m

dB

 

Power required:

Status:

This tool is intended for you to check if your loudspeakers are powerful enough for the desired application. You will need your loudspeaker data sheet to find the required information.

  • 1.) Insert the sensitivity of the loudspeaker. This will be given as a figure in decibels 1 Watt, 1 metre.
  • 2.) Insert the maximum power handling of the loudspeaker in Watts.
  • 3.) Insert the distance you wish the loudspeaker to throw in metres. Remember this is to the height of people’s ears, not necessarily to the floor.
  • 4.) Insert the desired listening level in decibels.
  • 5.) Click calculate.

The calculator will tell you if the loudspeaker is capable of the job or if attempting to reach that level will overload it.

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