Hi all,
This subject continues to severely bug me. I've just read some audio amp servicing/repair book where the author states that customers often find it desirable to know an amp's actual output power, and to return an amp having measured its output power and noted it down for the customer's info. The trouble is, customers are familiar with "RMS power" - but there's no such thing! Irms X Vrms = AVERAGE power and that is all that matters. BUT - try telling that to a typical customer!
So it must all come down to perception. Customers have an idea in their minds what say 70WRMS sounds like through listening to dozens of various VRMS labelled amps over the years. So there ought to be some kind of notional, informal 'conversion factor' between Waverage and "WRMS" we could adopt to satisfy them without compromising on the accuracy of the correct measurement, n'est pas? What would that conversion factor be? Greater or less than unity for a start? Your thoughts invited.