• Guide to Voice Alarm Systems

    The tools shown here are a part of the Guide to Voice Alarm Systems

    Slide 2

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

dB 1w/1m




Power required:


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.

The only online voice alarm standards finder

This standards table was written and designed by RH Consulting Europe and hosted by zingtree.com. If you want more information about Voice Alarms take a look at the Guide to Voice Alarm Systems iBook.

Whilst we endeavour to ensure that the information in this document is correct, we do not warrant its completeness or accuracy; nor do we commit to ensuring information currently available is valid in the future.

Find out more about the Guide to Voice Alarm Systems