professional PA amp required
How big is this facility and how long are the wires?
If it is a big facility with long speaker runs, then you need a zoned PA amp. These hookups are very different from home audio. Thee are 70 and 100 volt systems. There is a transformer at each speaker with taps. The taps are marked in watts. Now to balance the system out the taps must add up to the power of the amplifier. So if you had a 100 watt amp, you could have two speakers on 10 watt taps for a total of 20. In a larger space you could have two speakers on 40 watt taps. The total would be a hundred and the amp will see its optimal impedance.
Since this is a high voltage, high impedance system between amp and the speaker transformers, only thin wire is required between the amp and the speaker transformer. The transformers should be right by the speakers.
If you don't understand all this, you will need a professional commercial building sound installer.
