Thanks for the explanation Murph. I've always just accepted that I vaguely understood this concept, but I've never really thought about it. My system is set so that if I set about -25dB or so I end up getting around 80dB on my RS meter (content dependent of course).

Is there a standard that recommends the way we calibrate our systems so that -25dB in my system would be the same as -25dB on your system with the same source material? I am now curious.

Dan
On-Wall M5HP LCR, QS8 & EP500 in 7.1