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

[bruce bruce]

Thanks for the input guys. For other refrence, a CyberData Voip Amplifier
which supplies 10 Watt to each of the two bogen 30 Watt speakers did the job
for a 35,0000 square feet warehouse with environmental noise level of
slightly higher than standard but not those of industrial.

Only two speakers and done deal. Though I know that three speaker would have
been the perfect solution but 4 would cover every single little corner and
be an overkill.

-Bruce

On Tue, Jul 13, 2010 at 8:47 PM, C F <shmaltz at gmail.com> wrote:

> 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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