Is there any one who have already used the Power Sonix Public Address System? Thanks in advance..

Sir Astro Spectra, do you have an idea how much a single Power Sonix PSNAV12 300W unit cost? I've visited their page and send them email but until now I am waiting for their response.
We want to set up a Public address on a port to inform moored and berthing vessels. I think this system will fit. Is ...