Re: Thoughts about amplifiers at 3/4 volume.
The basic math needed to calculate the db change for an increase in power, unless that increase happens to be a power of 2 (2x, 4x, etc.) involves a log10. That's a moot point though because I just remembered I have both Excel and OpenOffice which have scientific functions so this wouldn't be too hard to figure out.
As far as the concept goes, I think I understand. Sorry for being dense. Tell me if I'm wrong in this scenario...
I find that when setting gain structure, as I lower the amount of attenuation on the amp, starting with full attenuation, it goes into clipping at 50% attenuation. In order to get a better SNR, I adjust the sensitivity downward to the point that now, I get clipping right at the point where I also have zero attenuation. This gives me better SNR plus the peace of mind of knowing nobody can turn up the "gains" when I'm not looking driving the amp into clipping and ruining my speakers. HOWEVER, at that point, the amp is still putting out it's full rated power (assuming it was before).
Now assuming that is true, is not also true that I could measure the output and continue turning down the sensitivity with the attenuation at zero and achieve a lower output assuming the same input signal? At this point, adjusting the sensitivity would be in effect changing the input drive level need to achieve a CERTAIN output level... the level I am hoping to achieve.
