AdministratorJuly 8, 2021 at 9:19 am
There are a lot of good questions there. I would probably nix the idea of using batteries. Batteries typically run off 12 volts (obviously some more, some less). But because of this, you are going to have to use a lot of amperage, which will cut down on run-time. Some batteries even limit your amperage draw, which will cut down on your wattage, loudness, etc. Having said all this, batteries are typically not the way to go. Most outdoor venues have somewhere to run long extension cords to. So I would suggest investing in those instead.
As far as how loud they will go, you really shouldn’t need any more that 200-250 watts RMS on the Soundstage 15’s. At 200watts in an anechoic chamber (which outside is about as close as you will get) will still play 108dB 10 feet away. And it isn’t until 30ft away that you go under 100dB (99.5dB) Way louder than you probably should be playing them anyway. I say all this to say, they should get plenty loud enough for you. And there is nothing wrong with having an amplifier with more power on tap (550-600 watts) or even limiting the power if you want.
The most important thing with any PA speaker is to put a high pass on it. A 4th order high pass around 35hz would be perfect for this. Most PA amplifiers with dsp on them, will easily be able to accommodate a setting like this.