Axiom Home Page Forums General Discussion Technical Questions More on Amp power

There is a little loss, running more channels. But the power required to deliver a specific sound pressure level at the listening position is the same no matter how many channels are involved. So closer to the later of what you're asking.

D, for example(disregarding losses Chris mentioned), if you have one speaker using 1 watt for a relatively loud 85dB at the listening position and then add a second speaker also using 1 watt for 85dB, 2 watts are now used, but the combined output is now 3dB higher, for a new 88dB sound level. If the overall sound level was instead to remain at the original 85dB, each speaker would use 1/2 watt for an 82dB output, with the result that 1 watt would be used for an 85dB sound level, as was the case using a single speaker.

What I wonder is how does one calculate adjustments for wind noise when waving the meter around like a baton?

Of course this also explains why they often have big foam bubbles over the microphone end. It's to prevent you from taking out your neighbors eye during a particularly lively crescendo.