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

[C F]

I agree with horns you'll usually get better coverage. I have done
this in the past with 5 speakers for a 30k sq ft warehouse very good
coverage. Using bogen horns. This was for a 300ft by 100ft warehouse.
Starting at 30 ft of the 300ft wall at the 50ft line off the 100ft
side I installed a horn every 60ft alternating facing one north and
the other south, which ended up 3 facing one way and 2 the other. You
can get double horn speakers which will face 2 sides. I wouldn't mount
them on the wall specifically not so low as fork lifts and what not
will damage them.


On Mon, Jul 12, 2010 at 2:17 PM, bruce bruce <bruceb444 at gmail.com> wrote:
> Well, these are horn speakers with 30 Watt which will receive 10 Watt only
> from Amplifer. I am not connecting them to ceiling so maybe 10 feet off the
> ground. I guess my coverage would be better???
> Based on your calculations for for 40k sqfeet that would be 33 speakers. I
> think that's way too much of an overkill.
> thanks,
> Bruce
>
> On Mon, Jul 12, 2010 at 1:05 AM, C F <shmaltz at gmail.com> wrote:
>>
>> 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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