The issue you're confused about seems to be the difference between power and energy.
Energy is how much work you can do. Common units are joules or watt-hours.
Power is how fast you do work. It's a rate of change. Common units are watts or horsepower. Horsepower is probably an instructive unit to consider. Say you wanted to move a large pile of straw. Whether it's moved by a horse or a housecat doesn't affect the amount of work done. But the horse does it faster, because it's a more powerful animal.
For the purposes of discussing grid electricity consumption, watts (W) and kilowatt-hours (kWh) are the most common units used. To know how much energy is consumed, multiply the power by the time. 100 W x 1 hour is 100 watt-hours, or .1 kWh. In short, the relationship between power and consumption is time.
A 100W bulb consumes 100W assuming the voltage across it is what's specified on the package, which is usually 120V in my experience. If the voltage at your socket is lower, the bulb will consume less power. It's approximately a fixed resistance, so the power consumed is
$$
P=\frac{V^2}{R}
$$
As an aside, remember energy conservation. If something consumes 100W, that energy is being converted to some other form. Either it gets stored (potential energy), it's used (light, motion, etc.), or it's wasted as heat. For an incandescent bulb, ~90% of the power consumed is converted to heat. So a 100W incandescent bulb consumes 100W, but only outputs 10W of light. It gets hot because the other 90W is being wasted. Which is why CFL's run so much cooler and consume less power for the same light output.
The 92W is an "average" figure while the 1kW is a "maximum". To get a true idea of the maximum input power it could draw, we'd need to look at the information plate on the mains input. There will be capacitors in the power supply for delivering power into peaks. If you actually got it set up and outputting at peak volume it would probably draw >1kW from the mains.
It's not unusual for speaker power outputs to be really misleading, although this is the Panasonic official website and they quote RMS and PMPO. 1kW is quite loud!
Best Answer
I didn't follow the link, but air conditioners can move more heat than the power it takes to do the moving.
This is a case where the Carnot efficiency works in your favor. Carnot says that the maximum possible theoretical efficiency of a heat engine is Tdiff / Thot, where the temperatures are expressed in a absolute linear scale, like Kelvin. For example, if you had a reservoir of boiling water (373 K) and icewater (273 K), even a ideal heat engine can't be more than 100 K / 373 K = 27% efficient. Put another way, for a heat flow of 100 W in this setup, you can't ever extract more than 27 W of work.
However, heat pumps do the reverse. A perfect heat pump would only require 27 W of work input to move 100 W of heat from 273 K to 373 K. This is not a violation of conservation of energy because work can't be extracted from this heat without hitting the 27% limit as above.
Air conditioners are heat pumps. They move heat from the room to the outside, presumably from cooler to warmer. The temperature difference is a lot less than the difference between boiling and frozen water, so the Carnot efficiency is much less too. That is actually good news for air conditioners, because they benefit according to the reciprocal of the Carnot efficiency. Of course real air conditioners are real systems with inevitable real inefficiencies, so you can't just take the reciprocal of the Carnot efficiency to determine their power input requirements. But, this still works in their favor, and the systems are good enough for reasonable temperature differences to still require less work in than the amount of heat they move around.
For more details, look up "Carnot efficiency". Surely there is much written about it out there.