I’m trying to figure out how much power (wpc) I’m using when I listen at normal levels. I know my speakers are rated @88db, and I know that a 3db increase causes the power use to double.
If I use a sound pressure meter, set up 1 meter from a speaker, and use a test cd to produce a tone @88db on the spm, I should be using 1 watt of power, correct? Then, if I turn up the volume on my rig to about the 9 o’clock position (which is my normal setting), and take another reading from the sound pressure meter, I should be able to do math and figure out (approximately) how many watts my rig is putting out to produce music at my normal level, correct? I realize this is a somewhat rudimentary method, but it should be realistic, shouldn’t it?
I’ve always believed in “more power is better”, but I’m curious about how much I’m really using. I’d like to try a Class A amp, but am unwilling to pursue it if I can’t be reasonably sure its got enough power.