Quote Originally Posted by kexodusc
FLZapped: Thanks so much for your reply.

As a follow up to the last question about power consumption, if power consumption (ie:550 watts) and max power output are related, can I assume then that a unit that lists it's specs as 110 watts X 6 would not be able drive ALL 6 channels at 110 watts simultaneously? Would it therefore be something closer to 90 watts X 6 all channels driven (ie: 540 watts)...thanks again?
Not for a conventional design. At 110w/channel, that would be 660 watts before you calculate in efficiency losses. And amps aren't all that great. Most amps are in the 55 - 65% range....however......having stated that, the average power draw also depends on the duty cycle of the program source.

If you go look at the link below, it should help you see how this is all calculated.....

http://www.crownaudio.com/pdf/amps/133811.pdf

The link is for a crown PT2.1 amp, which should be a typical conventional design. The rated broadband power output is 425 watts per channel into 4 ohms. It's rear label says 1460 watts. (120*12.2=1464 watts calculated from label - close enough):

http://www.crownaudio.com/pdf/amps/133376.pdf

You'll note that actual power consumption calculations are far less(798W) than what the spec label indicates(1460W) on the back of the unit......so, my fear(and SWAG) is that these guys used their engineering skills to shave the design down to bare minimum thinking that no one would notice, knowing they could probably get away with it operationally.

-Bruce