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hi all,  can you please advise me as i have to add more speakers to a system and would like so info on how you work out what size speaker you need i.e watts and power rating. they want the flush ceiling speakers, but I'm hearing about 70V and 100V.

plus how do i work out how many i can fit with out overloading the amp.


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the line  voltage is not really relevant when working out pa load.


as a rough guide the higher the line voltage the lower the volt drop.

each speaker etc will add load to the line.

as an easy calc if your amp has more power than your total load then your fine. just be cautious not to over drive.



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