[asterisk-users] How to calculate number of speakers needed for PAGING and INTERCOM coverage area?

[C F]

In my experience using height for radius works, for example if you
have a 20 ft high ceiling then the coverage for one speaker would be
40 ft diameter circle (around 1200 sq ft). Of course overlapping 5 ft
has never killed anyone, but this really depends on the power of the
speaker, I usually deal with 70v speakers tapped at 16 or 8 watts
depending on how many speakers I put on one amplifier and the output
wattage of that amplifier.



On Fri, Jul 9, 2010 at 2:29 AM, bruce bruce <bruceb444 at gmail.com> wrote:
> Hi Guys,
> I am looking to buy a 25 Watt output CyberData VoIP amplifier and to use 2
> Bogen sp308a speakers with it for a 40, 000 squar feet area and 21 feet
> height. Is that enough? Is there calculator online I can use to determine
> the number of speakers needed? I guess these speakers go in chain so I am
> not sure if the full capacity of the speaker (30 watt) will be used.
> I appreciate your advice.
> Thanks,
> Bruce
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