...(Stand alone preamps are expensive specialty items.) ...
but that link says that it means the voltage can swing anywhere from Vsupply + to -. So maybe both explanations are the same but Im not understanding it that way
It must have something to do with Fig 6 he mentioned and how the Max Output Voltage vs load resistance are related,
Ok but I have a +/-9V supply made by two 9V batteries as shown in post #1, so I can use P = 18V^2 * 32 = 10,368W, is this correct?
If a small mic can generate a 300mV potential,