mulester7 said:
.....I got one question concerning this all-channels-driven rating....using the 5 or 7 channel stereo mode, 5 or 7 channels aren't peaking at the same time?.....
All channel stereo is really a DSP mode. The processor takes the two stereo channels and sends them to the front speakers, just as in normal stereo mode. It duplicates those channels and sends them to the surrounds. It also sums the two channels and sends that to the center. So IF the two front channels peak at the same time, then the other channels would seem to peak at the same time too.
But that is a very rare case because:
1. Music rarely, if ever, is identical in each channel. I've edited enough audio with Sound Forge to state that pretty confidently. Of course there are some peaks that are
nearly identical but not quite. I have yet to see any waveform where if you invert one channel and paste-mix it into the other, the result is all zero samples (ie, identical content).
2. In a typical HT setup, you are not equidistant from each speaker and the processor will apply a delay to some of the channels according to the speaker distance you set during setup.
3. The processing itself takes time, albeit an inaudible amount of time, so each channel will not require power at the exact same instant of time.