Re: Loudspeaker recommendation

["Grant Finlay" grantfinlay]

Many companies offer portable PAs, use the below to work out the most suita=
ble on offer.

http://www.crownaudio.com/apps_htm/designtools/elect-pwr-req.htm

(from website)
Example: You are designing a system where the farthest listening position f=
rom the loudspeaker is 100 meters, and the desired Sound Pressure Level is =
85 dB SPL The loudspeaker chosen for the job has a sensitivity rating of 95=
 dB. With the minimum recommended amplifier headroom of 3 dB, then you need=
 to choose an amplifier that can supply at least 1,995 watts to the loudspe=
aker.

Here's some more helpfull reading.
http://lectrosonics.com/aucgd/aucgd.htm

Regards,
Grant.